TY  - CONF
AU  - Vidojković, Sonja
AU  - Lindeboom, Ralph
AU  - Mijajlovic, Miroslav
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7587
AB  - This paper discusses and compares the sensitivity, accuracy, selectivity, impeding factors, and other characteristics of various photometric methods for determining the concentration of film forming amines. It enables the selection of the appropriate analytical method based on the type of FFA, water composition, required sensitivity, accuracy, and other criteria.
Additionally, a brief overview of progress in investigating the interaction of FFA with surface oxides is provided.
PB  - The International Association for the Properties of Water and Steam
C3  - IAPWS 7th International Conference on Film Forming Substances (FFS2024), March 26-28, 2024, Prato, Italy
T1  - Comparison of photometric methods for detecting film forming amines in water and progress in study of their interaction with surface oxides
UR  - https://hdl.handle.net/21.15107/rcub_cer_7587
ER  - 

@conference{
author = "Vidojković, Sonja and Lindeboom, Ralph and Mijajlovic, Miroslav",
year = "2024",
abstract = "This paper discusses and compares the sensitivity, accuracy, selectivity, impeding factors, and other characteristics of various photometric methods for determining the concentration of film forming amines. It enables the selection of the appropriate analytical method based on the type of FFA, water composition, required sensitivity, accuracy, and other criteria.
Additionally, a brief overview of progress in investigating the interaction of FFA with surface oxides is provided.",
publisher = "The International Association for the Properties of Water and Steam",
journal = "IAPWS 7th International Conference on Film Forming Substances (FFS2024), March 26-28, 2024, Prato, Italy",
title = "Comparison of photometric methods for detecting film forming amines in water and progress in study of their interaction with surface oxides",
url = "https://hdl.handle.net/21.15107/rcub_cer_7587"
}

Vidojković, S., Lindeboom, R.,& Mijajlovic, M.. (2024). Comparison of photometric methods for detecting film forming amines in water and progress in study of their interaction with surface oxides. in IAPWS 7th International Conference on Film Forming Substances (FFS2024), March 26-28, 2024, Prato, Italy
The International Association for the Properties of Water and Steam..
https://hdl.handle.net/21.15107/rcub_cer_7587

Vidojković S, Lindeboom R, Mijajlovic M. Comparison of photometric methods for detecting film forming amines in water and progress in study of their interaction with surface oxides. in IAPWS 7th International Conference on Film Forming Substances (FFS2024), March 26-28, 2024, Prato, Italy. 2024;.
https://hdl.handle.net/21.15107/rcub_cer_7587 .

Vidojković, Sonja, Lindeboom, Ralph, Mijajlovic, Miroslav, "Comparison of photometric methods for detecting film forming amines in water and progress in study of their interaction with surface oxides" in IAPWS 7th International Conference on Film Forming Substances (FFS2024), March 26-28, 2024, Prato, Italy (2024),
https://hdl.handle.net/21.15107/rcub_cer_7587 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Lindeboom, Ralph
AU  - Mijajlović, Miroslav M.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7510
AB  - This work presents analytical methods for measuring the concentration of film forming amines. Their advantages and disadvantages are discussed. Special attention is paid to the applicability of each method in power industry.
PB  - The International Association for the Properties of Water and Steam (IAPWS)
C3  - IAPWS 6th International Conference on Film Forming Substances (FFS2023), March 21st-23rd, 2023, Prato, Italy
T1  - Analytical Methods for Determination of Film Forming Amine Concentration in Water Solutions
UR  - https://hdl.handle.net/21.15107/rcub_cer_7510
ER  - 

@conference{
author = "Vidojković, Sonja and Lindeboom, Ralph and Mijajlović, Miroslav M.",
year = "2023",
abstract = "This work presents analytical methods for measuring the concentration of film forming amines. Their advantages and disadvantages are discussed. Special attention is paid to the applicability of each method in power industry.",
publisher = "The International Association for the Properties of Water and Steam (IAPWS)",
journal = "IAPWS 6th International Conference on Film Forming Substances (FFS2023), March 21st-23rd, 2023, Prato, Italy",
title = "Analytical Methods for Determination of Film Forming Amine Concentration in Water Solutions",
url = "https://hdl.handle.net/21.15107/rcub_cer_7510"
}

Vidojković, S., Lindeboom, R.,& Mijajlović, M. M.. (2023). Analytical Methods for Determination of Film Forming Amine Concentration in Water Solutions. in IAPWS 6th International Conference on Film Forming Substances (FFS2023), March 21st-23rd, 2023, Prato, Italy
The International Association for the Properties of Water and Steam (IAPWS)..
https://hdl.handle.net/21.15107/rcub_cer_7510

Vidojković S, Lindeboom R, Mijajlović MM. Analytical Methods for Determination of Film Forming Amine Concentration in Water Solutions. in IAPWS 6th International Conference on Film Forming Substances (FFS2023), March 21st-23rd, 2023, Prato, Italy. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_7510 .

Vidojković, Sonja, Lindeboom, Ralph, Mijajlović, Miroslav M., "Analytical Methods for Determination of Film Forming Amine Concentration in Water Solutions" in IAPWS 6th International Conference on Film Forming Substances (FFS2023), March 21st-23rd, 2023, Prato, Italy (2023),
https://hdl.handle.net/21.15107/rcub_cer_7510 .

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Mijajlović, Miroslav
AU  - Lindeboom, Ralph E. F.
AU  - Jovičić, Vojislav
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7146
AB  - Abstract

Film forming amines (FFA) are corrosion inhibitors added to power plant
water. The major concern associated with their application is the thermal
stability in the high temperature power plant water medium, along with the
risk of decomposition into low molecular weight organic acids that can cause
corrosive damages in the water/steam cycle. However, there is still a lack of
sufficient data on the thermal stability of FFA corrosion inhibitors. This paper
presents a comprehensive critical review and state‐of‐the‐art assessment of the
results obtained from studying the thermolysis of FFA corrosion inhibitors in
power plant water/steam cycle conditions, highlighting the relevance for
practical application and research needs. Temperature, exposure time, initial
concentration, and alkalizing agents were identified as key factors influencing
the thermal stability of FFA in high temperature power plant water. Organic
acids are found in concentrations harmless to metal tubes. Advanced scientific
background information and additional research are required on this topic.
PB  - Wiley
T2  - Energy Science and Engineering
T1  - Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions
DO  - 10.1002/ese3.1625
ER  - 

@article{
author = "Vidojković, Sonja and Mijajlović, Miroslav and Lindeboom, Ralph E. F. and Jovičić, Vojislav",
year = "2023",
abstract = "Abstract

Film forming amines (FFA) are corrosion inhibitors added to power plant
water. The major concern associated with their application is the thermal
stability in the high temperature power plant water medium, along with the
risk of decomposition into low molecular weight organic acids that can cause
corrosive damages in the water/steam cycle. However, there is still a lack of
sufficient data on the thermal stability of FFA corrosion inhibitors. This paper
presents a comprehensive critical review and state‐of‐the‐art assessment of the
results obtained from studying the thermolysis of FFA corrosion inhibitors in
power plant water/steam cycle conditions, highlighting the relevance for
practical application and research needs. Temperature, exposure time, initial
concentration, and alkalizing agents were identified as key factors influencing
the thermal stability of FFA in high temperature power plant water. Organic
acids are found in concentrations harmless to metal tubes. Advanced scientific
background information and additional research are required on this topic.",
publisher = "Wiley",
journal = "Energy Science and Engineering",
title = "Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions",
doi = "10.1002/ese3.1625"
}

Vidojković, S., Mijajlović, M., Lindeboom, R. E. F.,& Jovičić, V.. (2023). Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions. in Energy Science and Engineering
Wiley..
https://doi.org/10.1002/ese3.1625

Vidojković S, Mijajlović M, Lindeboom REF, Jovičić V. Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions. in Energy Science and Engineering. 2023;.
doi:10.1002/ese3.1625 .

Vidojković, Sonja, Mijajlović, Miroslav, Lindeboom, Ralph E. F., Jovičić, Vojislav, "Thermal stability of film forming amines‐based corrosion inhibitors in high temperature power plant water solutions" in Energy Science and Engineering (2023),
https://doi.org/10.1002/ese3.1625 . .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Lindeboom, Ralph
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7237
AB  - Factors influencing thermal stability of film forming amines (FFA) in water/steam cycle conditions (such as temperature and residence time) are considered in this work. The thermal stability of FFA and the impact of their decomposition on power plant operation is an area suffering from a significant lack of relevant scientific data. A critical evaluation, systematization, discussion of scientific results, and the progress in the study of thermal stability of FFA in the steam generator conditions is given with particular attention to the relevance for practical application. Research directions of interest for science and practical applications in power plant systems are suggested.
PB  - The International Association for the Properties of Water and Steam
C3  - The Fifth IAPWS International Conference on Film Forming Substances (FFS 2022), 22nd – 23rd and 29th - 30th March 2022, virtual event
T1  - Advances in Studies of Film Forming Amines under Steam Generator Conditions
UR  - https://hdl.handle.net/21.15107/rcub_cer_7237
ER  - 

@conference{
author = "Vidojković, Sonja and Lindeboom, Ralph",
year = "2022",
abstract = "Factors influencing thermal stability of film forming amines (FFA) in water/steam cycle conditions (such as temperature and residence time) are considered in this work. The thermal stability of FFA and the impact of their decomposition on power plant operation is an area suffering from a significant lack of relevant scientific data. A critical evaluation, systematization, discussion of scientific results, and the progress in the study of thermal stability of FFA in the steam generator conditions is given with particular attention to the relevance for practical application. Research directions of interest for science and practical applications in power plant systems are suggested.",
publisher = "The International Association for the Properties of Water and Steam",
journal = "The Fifth IAPWS International Conference on Film Forming Substances (FFS 2022), 22nd – 23rd and 29th - 30th March 2022, virtual event",
title = "Advances in Studies of Film Forming Amines under Steam Generator Conditions",
url = "https://hdl.handle.net/21.15107/rcub_cer_7237"
}

Vidojković, S.,& Lindeboom, R.. (2022). Advances in Studies of Film Forming Amines under Steam Generator Conditions. in The Fifth IAPWS International Conference on Film Forming Substances (FFS 2022), 22nd – 23rd and 29th - 30th March 2022, virtual event
The International Association for the Properties of Water and Steam..
https://hdl.handle.net/21.15107/rcub_cer_7237

Vidojković S, Lindeboom R. Advances in Studies of Film Forming Amines under Steam Generator Conditions. in The Fifth IAPWS International Conference on Film Forming Substances (FFS 2022), 22nd – 23rd and 29th - 30th March 2022, virtual event. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_7237 .

Vidojković, Sonja, Lindeboom, Ralph, "Advances in Studies of Film Forming Amines under Steam Generator Conditions" in The Fifth IAPWS International Conference on Film Forming Substances (FFS 2022), 22nd – 23rd and 29th - 30th March 2022, virtual event (2022),
https://hdl.handle.net/21.15107/rcub_cer_7237 .

TY  - JOUR
AU  - Mijajlovic, Miroslav M.
AU  - Ćirić, Dušan
AU  - Vidojković, Sonja
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6734
AB  - The resistance seam welding is a welding technique that is often used for the creation of the leak-tight welds. It is a technique where the weld is created as a set
of overlapping weld nuggets between the cylindrical welding electrodes. The creation of the weld nuggets is depending on many external and internal parameters.
Some of the external parameters are pressing force, welding electrodes, electrical current and time, while the internal parameters are electrical resistance, resistivity, and temperature. The main issue with the resistance seam welding is to
properly set up internal and external parameters, create a weld nugget of a certain quality, reconfigure the parameters, relocate, and create another weld nugget of the same quality. The modern welding machines must have monitoring systems capable to make decisions and recalibration of the parameters. These systems are very complex and expensive, and as such, non-affordable for many
small enterprises. This paper is presenting an effective, temperature-based algorithm for selecting the optimal welding parameters before the welding begins.
The algorithm bases on the data from the experimental welding and numeric
simulation of the welding process. The verification of the algorithm is done after
testing the quality of the welds.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
T2  - Thermal Science
T1  - Effective Temperature Based Algorithm for Achieving Constant Quality Resistance Seam Weld
VL  - 25
IS  - 4A
SP  - 2459
EP  - 2469
DO  - 10.2298/TSCI200307222M
ER  - 

@article{
author = "Mijajlovic, Miroslav M. and Ćirić, Dušan and Vidojković, Sonja",
year = "2021",
abstract = "The resistance seam welding is a welding technique that is often used for the creation of the leak-tight welds. It is a technique where the weld is created as a set
of overlapping weld nuggets between the cylindrical welding electrodes. The creation of the weld nuggets is depending on many external and internal parameters.
Some of the external parameters are pressing force, welding electrodes, electrical current and time, while the internal parameters are electrical resistance, resistivity, and temperature. The main issue with the resistance seam welding is to
properly set up internal and external parameters, create a weld nugget of a certain quality, reconfigure the parameters, relocate, and create another weld nugget of the same quality. The modern welding machines must have monitoring systems capable to make decisions and recalibration of the parameters. These systems are very complex and expensive, and as such, non-affordable for many
small enterprises. This paper is presenting an effective, temperature-based algorithm for selecting the optimal welding parameters before the welding begins.
The algorithm bases on the data from the experimental welding and numeric
simulation of the welding process. The verification of the algorithm is done after
testing the quality of the welds.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "Thermal Science",
title = "Effective Temperature Based Algorithm for Achieving Constant Quality Resistance Seam Weld",
volume = "25",
number = "4A",
pages = "2459-2469",
doi = "10.2298/TSCI200307222M"
}

Mijajlovic, M. M., Ćirić, D.,& Vidojković, S.. (2021). Effective Temperature Based Algorithm for Achieving Constant Quality Resistance Seam Weld. in Thermal Science
Belgrade : Vinča Institute of Nuclear Sciences., 25(4A), 2459-2469.
https://doi.org/10.2298/TSCI200307222M

Mijajlovic MM, Ćirić D, Vidojković S. Effective Temperature Based Algorithm for Achieving Constant Quality Resistance Seam Weld. in Thermal Science. 2021;25(4A):2459-2469.
doi:10.2298/TSCI200307222M .

Mijajlovic, Miroslav M., Ćirić, Dušan, Vidojković, Sonja, "Effective Temperature Based Algorithm for Achieving Constant Quality Resistance Seam Weld" in Thermal Science, 25, no. 4A (2021):2459-2469,
https://doi.org/10.2298/TSCI200307222M . .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Mijajlovic, Miroslav
AU  - Petrova I., Tamara
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7295
AB  - Film forming amines (FFA) are organic additives used to prevent corrosion in power plant water/steam cycle. FFA create a non-wettable film on the inner tube wall that represents a physical barrier between the tube wall and moisture containing corrosive contaminants. Octadecylamine (ODA) is the most widely used FFA in power industry. Despite the fact that the thermal stability determines the utilization of ODA in the high temperature water/steam cycle conditions, there is a scarce of relevant scientific data. In this paper the published results of the influence of residence time on the ODA decomposition rate in water/steam cycle were critically reviewed. For studying ODA thermolysis, steel autoclaves and high-temperature test rig were used. ODA was observed to be a harmless compound for the application in power plants.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - Programme and Full Papers Proceedings - International Conference "Power Plants 2021",  November 17-18th, 2021, Belgrade, Serbia
T1  - Decomposition rate of octadecylamine (ODA)
SP  - 317
EP  - 321
UR  - https://hdl.handle.net/21.15107/rcub_cer_7295
ER  - 

@conference{
author = "Vidojković, Sonja and Mijajlovic, Miroslav and Petrova I., Tamara",
year = "2021",
abstract = "Film forming amines (FFA) are organic additives used to prevent corrosion in power plant water/steam cycle. FFA create a non-wettable film on the inner tube wall that represents a physical barrier between the tube wall and moisture containing corrosive contaminants. Octadecylamine (ODA) is the most widely used FFA in power industry. Despite the fact that the thermal stability determines the utilization of ODA in the high temperature water/steam cycle conditions, there is a scarce of relevant scientific data. In this paper the published results of the influence of residence time on the ODA decomposition rate in water/steam cycle were critically reviewed. For studying ODA thermolysis, steel autoclaves and high-temperature test rig were used. ODA was observed to be a harmless compound for the application in power plants.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "Programme and Full Papers Proceedings - International Conference "Power Plants 2021",  November 17-18th, 2021, Belgrade, Serbia",
title = "Decomposition rate of octadecylamine (ODA)",
pages = "317-321",
url = "https://hdl.handle.net/21.15107/rcub_cer_7295"
}

Vidojković, S., Mijajlovic, M.,& Petrova I., T.. (2021). Decomposition rate of octadecylamine (ODA). in Programme and Full Papers Proceedings - International Conference "Power Plants 2021",  November 17-18th, 2021, Belgrade, Serbia
Belgrade : Society of Thermal Engineers of Serbia., 317-321.
https://hdl.handle.net/21.15107/rcub_cer_7295

Vidojković S, Mijajlovic M, Petrova I. T. Decomposition rate of octadecylamine (ODA). in Programme and Full Papers Proceedings - International Conference "Power Plants 2021",  November 17-18th, 2021, Belgrade, Serbia. 2021;:317-321.
https://hdl.handle.net/21.15107/rcub_cer_7295 .

Vidojković, Sonja, Mijajlovic, Miroslav, Petrova I., Tamara, "Decomposition rate of octadecylamine (ODA)" in Programme and Full Papers Proceedings - International Conference "Power Plants 2021",  November 17-18th, 2021, Belgrade, Serbia (2021):317-321,
https://hdl.handle.net/21.15107/rcub_cer_7295 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Lindeboom, Ralph
AU  - Mijajlovic, Miroslav
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7414
AB  - Film forming amines (FFA) are organic feedwater additives used in the power industry for several decades. Even though, the utilization of FFA in power plants is highly dependent on their thermal stability in the high temperature water/steam environment, the scientific data are scarce. Oleylamine (OLA) is known to be a film forming amine commonly applied in power industry as a feedwater additive for the corrosion protection of the steam generators. The decomposition rate of OLA was studied at the temperatures up to 220 oC.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia
T1  - Influence of residence time on the decomposition rate of oleylamine
VL  - 1
SP  - 170
EP  - 173
UR  - https://hdl.handle.net/21.15107/rcub_cer_7414
ER  - 

@conference{
author = "Vidojković, Sonja and Lindeboom, Ralph and Mijajlovic, Miroslav",
year = "2021",
abstract = "Film forming amines (FFA) are organic feedwater additives used in the power industry for several decades. Even though, the utilization of FFA in power plants is highly dependent on their thermal stability in the high temperature water/steam environment, the scientific data are scarce. Oleylamine (OLA) is known to be a film forming amine commonly applied in power industry as a feedwater additive for the corrosion protection of the steam generators. The decomposition rate of OLA was studied at the temperatures up to 220 oC.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia",
title = "Influence of residence time on the decomposition rate of oleylamine",
volume = "1",
pages = "170-173",
url = "https://hdl.handle.net/21.15107/rcub_cer_7414"
}

Vidojković, S., Lindeboom, R.,& Mijajlovic, M.. (2021). Influence of residence time on the decomposition rate of oleylamine. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia
Society of Physical Chemists of Serbia., 1, 170-173.
https://hdl.handle.net/21.15107/rcub_cer_7414

Vidojković S, Lindeboom R, Mijajlovic M. Influence of residence time on the decomposition rate of oleylamine. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia. 2021;1:170-173.
https://hdl.handle.net/21.15107/rcub_cer_7414 .

Vidojković, Sonja, Lindeboom, Ralph, Mijajlovic, Miroslav, "Influence of residence time on the decomposition rate of oleylamine" in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia, 1 (2021):170-173,
https://hdl.handle.net/21.15107/rcub_cer_7414 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Lindeboom, Ralph
AU  - Mijajlovic, Miroslav
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7415
AB  - Film forming amines (FFA) are organic feedwater additives used in the power industry for several decades. Even though, the utilization of FFA in power plants is highly dependent on their thermal stability in the high temperature water/steam environment, the scientific data are scarce. Oleylamine (OLA) is known to be a film forming amine commonly applied in power industry as a feedwater additive for the corrosion protection of the steam generators. The decomposition rate of OLA was studied at the temperatures up to 220 oC.
PB  - Society of Physical Chemists of Serbia
C3  - Book of abstracts - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia
T1  - Influence of residence time on the decomposition rate of oleylamine
SP  - 40
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_cer_7415
ER  - 

@conference{
author = "Vidojković, Sonja and Lindeboom, Ralph and Mijajlovic, Miroslav",
year = "2021",
abstract = "Film forming amines (FFA) are organic feedwater additives used in the power industry for several decades. Even though, the utilization of FFA in power plants is highly dependent on their thermal stability in the high temperature water/steam environment, the scientific data are scarce. Oleylamine (OLA) is known to be a film forming amine commonly applied in power industry as a feedwater additive for the corrosion protection of the steam generators. The decomposition rate of OLA was studied at the temperatures up to 220 oC.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Book of abstracts - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia",
title = "Influence of residence time on the decomposition rate of oleylamine",
pages = "40-40",
url = "https://hdl.handle.net/21.15107/rcub_cer_7415"
}

Vidojković, S., Lindeboom, R.,& Mijajlovic, M.. (2021). Influence of residence time on the decomposition rate of oleylamine. in Book of abstracts - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia
Society of Physical Chemists of Serbia., 40-40.
https://hdl.handle.net/21.15107/rcub_cer_7415

Vidojković S, Lindeboom R, Mijajlovic M. Influence of residence time on the decomposition rate of oleylamine. in Book of abstracts - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia. 2021;:40-40.
https://hdl.handle.net/21.15107/rcub_cer_7415 .

Vidojković, Sonja, Lindeboom, Ralph, Mijajlovic, Miroslav, "Influence of residence time on the decomposition rate of oleylamine" in Book of abstracts - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (PC2021) September 20-24, 2021, Belgrade, Serbia (2021):40-40,
https://hdl.handle.net/21.15107/rcub_cer_7415 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Lindeboom, Ralph
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7586
AB  - The high-temperature high-pressure stainless steel reactor, operational up to 300 oC/200bar, was used for studying the thermal stability of oleylamine (OLA). The results showed the effect of temperature, residence time and initial concentration of OLA on intensity of its thermal decomposition up to 220 oC.
PB  - International Association for the properties of Water and Steam (IAPWS)
C3  - IAPWS Fourth International Virtual Conference on Film Forming Substances (FFS2021), 23-25 March, 2021
T1  - Thermal Stability of OLA in Water-Steam Cycle Conditions,
SP  - Session 4
UR  - https://hdl.handle.net/21.15107/rcub_cer_7586
ER  - 

@conference{
author = "Vidojković, Sonja and Lindeboom, Ralph",
year = "2021",
abstract = "The high-temperature high-pressure stainless steel reactor, operational up to 300 oC/200bar, was used for studying the thermal stability of oleylamine (OLA). The results showed the effect of temperature, residence time and initial concentration of OLA on intensity of its thermal decomposition up to 220 oC.",
publisher = "International Association for the properties of Water and Steam (IAPWS)",
journal = "IAPWS Fourth International Virtual Conference on Film Forming Substances (FFS2021), 23-25 March, 2021",
title = "Thermal Stability of OLA in Water-Steam Cycle Conditions,",
pages = "Session 4",
url = "https://hdl.handle.net/21.15107/rcub_cer_7586"
}

Vidojković, S.,& Lindeboom, R.. (2021). Thermal Stability of OLA in Water-Steam Cycle Conditions,. in IAPWS Fourth International Virtual Conference on Film Forming Substances (FFS2021), 23-25 March, 2021
International Association for the properties of Water and Steam (IAPWS)., Session 4.
https://hdl.handle.net/21.15107/rcub_cer_7586

Vidojković S, Lindeboom R. Thermal Stability of OLA in Water-Steam Cycle Conditions,. in IAPWS Fourth International Virtual Conference on Film Forming Substances (FFS2021), 23-25 March, 2021. 2021;:Session 4.
https://hdl.handle.net/21.15107/rcub_cer_7586 .

Vidojković, Sonja, Lindeboom, Ralph, "Thermal Stability of OLA in Water-Steam Cycle Conditions," in IAPWS Fourth International Virtual Conference on Film Forming Substances (FFS2021), 23-25 March, 2021 (2021):Session 4,
https://hdl.handle.net/21.15107/rcub_cer_7586 .

TY  - JOUR
AU  - Mijajlovic, Miroslav M.
AU  - Vidojković, Sonja
AU  - Ćirić, Dušan
AU  - Marinković, Dragan
PY  - 2020
UR  - http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/6110
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4010
AB  - This paper deals with modeling, discretization, and numerical analysis of the two-way fluid-structure interaction between a fishing wobbler and a water stream. The structural domain is an assembly of several bodies that have multiple mutual structure-to-structure interactions. These interactions are mostly nonlinear contacts that significantly influence the time step used in simulations. As a result of these nonlinearities, the numerical solving of such a model requires significant computer resources and a long computational time. The paper also presents the creation and numerical simplifications of the model. However, the model remains very realistic. It is concluded that solving the structural domain in a model that retains the interaction between solid bodies is more computationally sensitive and more demanding than solving the fluid domain.
PB  - Niš, Serbia : University of Niš
T2  - Facta Unversitatis
T1  - Numerical simulation of fluid-structure interaction between fishing wobbler and water
VL  - 18
IS  - 4
SP  - 665
EP  - 676
DO  - 10.22190/FUME200128015M
ER  - 

@article{
author = "Mijajlovic, Miroslav M. and Vidojković, Sonja and Ćirić, Dušan and Marinković, Dragan",
year = "2020",
abstract = "This paper deals with modeling, discretization, and numerical analysis of the two-way fluid-structure interaction between a fishing wobbler and a water stream. The structural domain is an assembly of several bodies that have multiple mutual structure-to-structure interactions. These interactions are mostly nonlinear contacts that significantly influence the time step used in simulations. As a result of these nonlinearities, the numerical solving of such a model requires significant computer resources and a long computational time. The paper also presents the creation and numerical simplifications of the model. However, the model remains very realistic. It is concluded that solving the structural domain in a model that retains the interaction between solid bodies is more computationally sensitive and more demanding than solving the fluid domain.",
publisher = "Niš, Serbia : University of Niš",
journal = "Facta Unversitatis",
title = "Numerical simulation of fluid-structure interaction between fishing wobbler and water",
volume = "18",
number = "4",
pages = "665-676",
doi = "10.22190/FUME200128015M"
}

Mijajlovic, M. M., Vidojković, S., Ćirić, D.,& Marinković, D.. (2020). Numerical simulation of fluid-structure interaction between fishing wobbler and water. in Facta Unversitatis
Niš, Serbia : University of Niš., 18(4), 665-676.
https://doi.org/10.22190/FUME200128015M

Mijajlovic MM, Vidojković S, Ćirić D, Marinković D. Numerical simulation of fluid-structure interaction between fishing wobbler and water. in Facta Unversitatis. 2020;18(4):665-676.
doi:10.22190/FUME200128015M .

Mijajlovic, Miroslav M., Vidojković, Sonja, Ćirić, Dušan, Marinković, Dragan, "Numerical simulation of fluid-structure interaction between fishing wobbler and water" in Facta Unversitatis, 18, no. 4 (2020):665-676,
https://doi.org/10.22190/FUME200128015M . .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Verliefde, Arne
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7588
AB  - This presentation discusses the factors influencing the thermal decomposition of film-forming amines. It emphasizes the benefits of scientific data in the application of film-forming amines in the power industry and points out directions for future research.
PB  - International Association for the properties of Water and Steam (IAPWS)
C3  - The Third (IAPWS) International Conference on Film Forming Substances (FFS2019), Heidelberg, Germany, 19-21 March, 2019
T1  - Study of film forming amines thermolysis in the water/steam cycle of power plants
SP  - Session 10
UR  - https://hdl.handle.net/21.15107/rcub_cer_7588
ER  - 

@conference{
author = "Vidojković, Sonja and Verliefde, Arne",
year = "2019",
abstract = "This presentation discusses the factors influencing the thermal decomposition of film-forming amines. It emphasizes the benefits of scientific data in the application of film-forming amines in the power industry and points out directions for future research.",
publisher = "International Association for the properties of Water and Steam (IAPWS)",
journal = "The Third (IAPWS) International Conference on Film Forming Substances (FFS2019), Heidelberg, Germany, 19-21 March, 2019",
title = "Study of film forming amines thermolysis in the water/steam cycle of power plants",
pages = "Session 10",
url = "https://hdl.handle.net/21.15107/rcub_cer_7588"
}

Vidojković, S.,& Verliefde, A.. (2019). Study of film forming amines thermolysis in the water/steam cycle of power plants. in The Third (IAPWS) International Conference on Film Forming Substances (FFS2019), Heidelberg, Germany, 19-21 March, 2019
International Association for the properties of Water and Steam (IAPWS)., Session 10.
https://hdl.handle.net/21.15107/rcub_cer_7588

Vidojković S, Verliefde A. Study of film forming amines thermolysis in the water/steam cycle of power plants. in The Third (IAPWS) International Conference on Film Forming Substances (FFS2019), Heidelberg, Germany, 19-21 March, 2019. 2019;:Session 10.
https://hdl.handle.net/21.15107/rcub_cer_7588 .

Vidojković, Sonja, Verliefde, Arne, "Study of film forming amines thermolysis in the water/steam cycle of power plants" in The Third (IAPWS) International Conference on Film Forming Substances (FFS2019), Heidelberg, Germany, 19-21 March, 2019 (2019):Session 10,
https://hdl.handle.net/21.15107/rcub_cer_7588 .

TY  - CONF
AU  - Vidojković, Sonja
AU  - Spanjers, Henri
AU  - Mijajlovic, Miroslav
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7589
AB  - In this paper, the thermolysis of film-forming amines in the water/steam cycle of thermal power plants is discussed. The goal is to improve understanding of the thermolysis of film-forming amines in order to facilitate their application in the power industry and ensure their safe and effective usage in industrial facilities utilizing high-temperature water. The results indicate that advanced fundamental scientific background information and additional research, allowing for the complexity of multicomponent solutions, are needed.
PB  - The International Association for the Properties of Water and Steam
C3  - Programme and the Abstract Book - 17th International Conference on the Properties of Water and Steam, September 2-6, 2018, Prague, Czech Republic
T1  - Thermal decomposition of film forming amines in the power generating cycle
SP  - 50
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_cer_7589
ER  - 

@conference{
author = "Vidojković, Sonja and Spanjers, Henri and Mijajlovic, Miroslav",
year = "2018",
abstract = "In this paper, the thermolysis of film-forming amines in the water/steam cycle of thermal power plants is discussed. The goal is to improve understanding of the thermolysis of film-forming amines in order to facilitate their application in the power industry and ensure their safe and effective usage in industrial facilities utilizing high-temperature water. The results indicate that advanced fundamental scientific background information and additional research, allowing for the complexity of multicomponent solutions, are needed.",
publisher = "The International Association for the Properties of Water and Steam",
journal = "Programme and the Abstract Book - 17th International Conference on the Properties of Water and Steam, September 2-6, 2018, Prague, Czech Republic",
title = "Thermal decomposition of film forming amines in the power generating cycle",
pages = "50-51",
url = "https://hdl.handle.net/21.15107/rcub_cer_7589"
}

Vidojković, S., Spanjers, H.,& Mijajlovic, M.. (2018). Thermal decomposition of film forming amines in the power generating cycle. in Programme and the Abstract Book - 17th International Conference on the Properties of Water and Steam, September 2-6, 2018, Prague, Czech Republic
The International Association for the Properties of Water and Steam., 50-51.
https://hdl.handle.net/21.15107/rcub_cer_7589

Vidojković S, Spanjers H, Mijajlovic M. Thermal decomposition of film forming amines in the power generating cycle. in Programme and the Abstract Book - 17th International Conference on the Properties of Water and Steam, September 2-6, 2018, Prague, Czech Republic. 2018;:50-51.
https://hdl.handle.net/21.15107/rcub_cer_7589 .

Vidojković, Sonja, Spanjers, Henri, Mijajlovic, Miroslav, "Thermal decomposition of film forming amines in the power generating cycle" in Programme and the Abstract Book - 17th International Conference on the Properties of Water and Steam, September 2-6, 2018, Prague, Czech Republic (2018):50-51,
https://hdl.handle.net/21.15107/rcub_cer_7589 .

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Rakin, Marko P.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2246
AB  - Deposits and scales formed on heat transfer surfaces in power plant water/steam circuits have a significant negative impact on plant reliability, availability and performance, causing tremendous economic consequences and subsequent increases in electricity cost. Consequently, the improvement of the understanding of deposition mechanisms on power generating surfaces is defined as a high priority in the power industry. The deposits consist principally of iron oxides, which are steel corrosion products and usually present in colloidal form. Magnetite (Fe3O4) is the predominant and most abundant compound found in water/steam cycles of all types of power plants. The crucial factor that governs the deposition process and influences the deposition rate of magnetite is the electrostatic interaction between the metal wall surfaces and the suspended colloidal particles. However, there is scarcity of data on magnetite surface properties at elevated temperatures due to difficulties in their experimental measurement. In this paper a generalized overview of existing experimental data on surface characteristics of magnetite at high temperatures is presented with particular emphasis on possible application in the power industry. A thorough analysis of experimental techniques, mathematical models and results has been performed and directions for future investigations have been considered. The state-of-the-art assessment showed that for the characterization of magnetite/aqueous electrolyte solution interface at high temperatures acid-base potentiometric titrations and electrophoresis were the most beneficial and dependable techniques which yielded results up to 290 and 200 degrees C, respectively. Mass titrations provided data on magnetite surface charge up to 320 degrees C, however, this technique is highly sensitive to the minor concentrations of impurities present on the surface of particle. Generally, fairly good correlation between the isoelectric point (pH(iep)) and point of zero charge (pH(pzc)) values has been obtained. All obtained results showed that the surface of magnetite particles is negatively charged in typical high temperature thermal power plant water, which indicates the low probability of aggregation and deposition on plant metal surfaces. The results also gave strong evidence on decline of pHiep and pHpzc with temperature in the same manner as neutral pH of water. The thermodynamic parameters of magnetite surface protonation reactions were in good agreement with each other and obtained using one site/two pK and mainly one site/one pK model. All collected data provided evidences for interaction between particles, probability of deposition and eventual attachment to the steel surface at various pH and temperatures and can serve as a foundation for future surface studies aimed at optimizing plant performances and reducing of magnetite deposition. In future works it would be indispensable to provide the surface experimental data for extended temperature ranges, typical solution chemistries and metal surfaces of power plant structural components and thus obtain entire set of results useful in modeling the surface behavior and control of deposition process in power reactors and thermal plant circuits. Moreover, the acquired results will be applicable and greatly valuable to all other types of power plants, industrial facilities and technological processes using the high temperature water medium.
PB  - Elsevier
T2  - Advances in Colloid and Interface Science
T1  - Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review
VL  - 245
SP  - 108
EP  - 129
DO  - 10.1016/j.cis.2016.08.008
ER  - 

@article{
author = "Vidojković, Sonja and Rakin, Marko P.",
year = "2017",
abstract = "Deposits and scales formed on heat transfer surfaces in power plant water/steam circuits have a significant negative impact on plant reliability, availability and performance, causing tremendous economic consequences and subsequent increases in electricity cost. Consequently, the improvement of the understanding of deposition mechanisms on power generating surfaces is defined as a high priority in the power industry. The deposits consist principally of iron oxides, which are steel corrosion products and usually present in colloidal form. Magnetite (Fe3O4) is the predominant and most abundant compound found in water/steam cycles of all types of power plants. The crucial factor that governs the deposition process and influences the deposition rate of magnetite is the electrostatic interaction between the metal wall surfaces and the suspended colloidal particles. However, there is scarcity of data on magnetite surface properties at elevated temperatures due to difficulties in their experimental measurement. In this paper a generalized overview of existing experimental data on surface characteristics of magnetite at high temperatures is presented with particular emphasis on possible application in the power industry. A thorough analysis of experimental techniques, mathematical models and results has been performed and directions for future investigations have been considered. The state-of-the-art assessment showed that for the characterization of magnetite/aqueous electrolyte solution interface at high temperatures acid-base potentiometric titrations and electrophoresis were the most beneficial and dependable techniques which yielded results up to 290 and 200 degrees C, respectively. Mass titrations provided data on magnetite surface charge up to 320 degrees C, however, this technique is highly sensitive to the minor concentrations of impurities present on the surface of particle. Generally, fairly good correlation between the isoelectric point (pH(iep)) and point of zero charge (pH(pzc)) values has been obtained. All obtained results showed that the surface of magnetite particles is negatively charged in typical high temperature thermal power plant water, which indicates the low probability of aggregation and deposition on plant metal surfaces. The results also gave strong evidence on decline of pHiep and pHpzc with temperature in the same manner as neutral pH of water. The thermodynamic parameters of magnetite surface protonation reactions were in good agreement with each other and obtained using one site/two pK and mainly one site/one pK model. All collected data provided evidences for interaction between particles, probability of deposition and eventual attachment to the steel surface at various pH and temperatures and can serve as a foundation for future surface studies aimed at optimizing plant performances and reducing of magnetite deposition. In future works it would be indispensable to provide the surface experimental data for extended temperature ranges, typical solution chemistries and metal surfaces of power plant structural components and thus obtain entire set of results useful in modeling the surface behavior and control of deposition process in power reactors and thermal plant circuits. Moreover, the acquired results will be applicable and greatly valuable to all other types of power plants, industrial facilities and technological processes using the high temperature water medium.",
publisher = "Elsevier",
journal = "Advances in Colloid and Interface Science",
title = "Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review",
volume = "245",
pages = "108-129",
doi = "10.1016/j.cis.2016.08.008"
}

Vidojković, S.,& Rakin, M. P.. (2017). Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review. in Advances in Colloid and Interface Science
Elsevier., 245, 108-129.
https://doi.org/10.1016/j.cis.2016.08.008

Vidojković S, Rakin MP. Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review. in Advances in Colloid and Interface Science. 2017;245:108-129.
doi:10.1016/j.cis.2016.08.008 .

Vidojković, Sonja, Rakin, Marko P., "Surface properties of magnetite in high temperature aqueous electrolyte solutions: A review" in Advances in Colloid and Interface Science, 245 (2017):108-129,
https://doi.org/10.1016/j.cis.2016.08.008 . .

TY  - JOUR
AU  - Mijajlovic, Miroslav M.
AU  - Vidojković, Sonja
AU  - Milošević, Miloš S.
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1898
AB  - The friction coefficient in many friction stir welding researches is generally used as an effective, constant value without concern on the adaptable and changeable nature of the friction during welding sequence. This is understandable because the main problem in analyzing friction in friction stir welding are complex nature of the friction processes, case-dependent and time dependent contact between the bodies, influence of the temperature, sliding velocity, etc. This paper is presenting a complex experimental-numerical-analytical model for estimating the effective friction coefficient on contact of the bobbin tool and welding plates during welding, considering the temperature at the contact as the most influencing parameter on friction. The estimation criterion is the correspondence of the experimental temperature and temperature from the numerical model. The estimation procedure is iterative and parametric - the heat transport parameters and friction coefficient are adapted during the estimation procedure in a realistic manner to achieve relative difference between experimental and model's temperature lower than 3%. The results show that friction coefficient varies from 0.01 to 0.21 for steel-aluminium alloy contact and temperature range from 406 degrees C to 22 degrees C.
PB  - VINCA Institute of Nuclear Sciences
T2  - Thermal Science
T1  - Temperature dependent effective friction coefficient estimation in friction stir welding with the bobbin tool
VL  - 20
DO  - 10.2298/TSCI16S5321M
ER  - 

@article{
author = "Mijajlovic, Miroslav M. and Vidojković, Sonja and Milošević, Miloš S.",
year = "2016",
abstract = "The friction coefficient in many friction stir welding researches is generally used as an effective, constant value without concern on the adaptable and changeable nature of the friction during welding sequence. This is understandable because the main problem in analyzing friction in friction stir welding are complex nature of the friction processes, case-dependent and time dependent contact between the bodies, influence of the temperature, sliding velocity, etc. This paper is presenting a complex experimental-numerical-analytical model for estimating the effective friction coefficient on contact of the bobbin tool and welding plates during welding, considering the temperature at the contact as the most influencing parameter on friction. The estimation criterion is the correspondence of the experimental temperature and temperature from the numerical model. The estimation procedure is iterative and parametric - the heat transport parameters and friction coefficient are adapted during the estimation procedure in a realistic manner to achieve relative difference between experimental and model's temperature lower than 3%. The results show that friction coefficient varies from 0.01 to 0.21 for steel-aluminium alloy contact and temperature range from 406 degrees C to 22 degrees C.",
publisher = "VINCA Institute of Nuclear Sciences",
journal = "Thermal Science",
title = "Temperature dependent effective friction coefficient estimation in friction stir welding with the bobbin tool",
volume = "20",
doi = "10.2298/TSCI16S5321M"
}

Mijajlovic, M. M., Vidojković, S.,& Milošević, M. S.. (2016). Temperature dependent effective friction coefficient estimation in friction stir welding with the bobbin tool. in Thermal Science
VINCA Institute of Nuclear Sciences., 20.
https://doi.org/10.2298/TSCI16S5321M

Mijajlovic MM, Vidojković S, Milošević MS. Temperature dependent effective friction coefficient estimation in friction stir welding with the bobbin tool. in Thermal Science. 2016;20.
doi:10.2298/TSCI16S5321M .

Mijajlovic, Miroslav M., Vidojković, Sonja, Milošević, Miloš S., "Temperature dependent effective friction coefficient estimation in friction stir welding with the bobbin tool" in Thermal Science, 20 (2016),
https://doi.org/10.2298/TSCI16S5321M . .

TY  - JOUR
AU  - Mijajlovic, Miroslav M.
AU  - Vidojković, Sonja
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1909
AB  - After successful welding, destructive testing into test samples from Al 2024-T351 friction stir butt welds showed that tensile strength of the weld improve along the joint line, while dimensions of the weld nugget decrease. For those welds, both the base material and the welding tool constantly cool down during the welding phase. Obviously, the base material became overheated during the long dwelling phase what made conditions for creation of joints with the reduced mechanical properties. Preserving all process parameters but varying the dwelling time from 5-27 seconds a new set of welding is done to reach maximal achievable tensile strength. An analytical-numerical-experimental model is used for optimising the duration of the dwelling time while searching for the maximal tensile strength of the welds.
PB  - VINCA Institute of Nuclear Sciences
T2  - Thermal Science
T1  - Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease
VL  - 20
IS  - 6
SP  - 2137
EP  - 2147
DO  - 10.2298/TSCI160102102M
ER  - 

@article{
author = "Mijajlovic, Miroslav M. and Vidojković, Sonja",
year = "2016",
abstract = "After successful welding, destructive testing into test samples from Al 2024-T351 friction stir butt welds showed that tensile strength of the weld improve along the joint line, while dimensions of the weld nugget decrease. For those welds, both the base material and the welding tool constantly cool down during the welding phase. Obviously, the base material became overheated during the long dwelling phase what made conditions for creation of joints with the reduced mechanical properties. Preserving all process parameters but varying the dwelling time from 5-27 seconds a new set of welding is done to reach maximal achievable tensile strength. An analytical-numerical-experimental model is used for optimising the duration of the dwelling time while searching for the maximal tensile strength of the welds.",
publisher = "VINCA Institute of Nuclear Sciences",
journal = "Thermal Science",
title = "Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease",
volume = "20",
number = "6",
pages = "2137-2147",
doi = "10.2298/TSCI160102102M"
}

Mijajlovic, M. M.,& Vidojković, S.. (2016). Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease. in Thermal Science
VINCA Institute of Nuclear Sciences., 20(6), 2137-2147.
https://doi.org/10.2298/TSCI160102102M

Mijajlovic MM, Vidojković S. Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease. in Thermal Science. 2016;20(6):2137-2147.
doi:10.2298/TSCI160102102M .

Mijajlovic, Miroslav M., Vidojković, Sonja, "Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease" in Thermal Science, 20, no. 6 (2016):2137-2147,
https://doi.org/10.2298/TSCI160102102M . .

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Onjia, Antonije E.
AU  - Devečerski, Aleksandar B.
AU  - Grahovac, Nebojsa N
AU  - Nastasović, Aleksandra
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1474
AB  - The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Economizer water-wall damages initiated by feedwater impurities
VL  - 68
IS  - 5
SP  - 559
EP  - 563
DO  - 10.2298/HEMIND130715082V
ER  - 

@article{
author = "Vidojković, Sonja and Onjia, Antonije E. and Devečerski, Aleksandar B. and Grahovac, Nebojsa N and Nastasović, Aleksandra",
year = "2014",
abstract = "The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Economizer water-wall damages initiated by feedwater impurities",
volume = "68",
number = "5",
pages = "559-563",
doi = "10.2298/HEMIND130715082V"
}

Vidojković, S., Onjia, A. E., Devečerski, A. B., Grahovac, N. N.,& Nastasović, A.. (2014). Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija
Association of Chemical Engineers of Serbia., 68(5), 559-563.
https://doi.org/10.2298/HEMIND130715082V

Vidojković S, Onjia AE, Devečerski AB, Grahovac NN, Nastasović A. Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija. 2014;68(5):559-563.
doi:10.2298/HEMIND130715082V .

Vidojković, Sonja, Onjia, Antonije E., Devečerski, Aleksandar B., Grahovac, Nebojsa N, Nastasović, Aleksandra, "Economizer water-wall damages initiated by feedwater impurities" in Hemijska industrija, 68, no. 5 (2014):559-563,
https://doi.org/10.2298/HEMIND130715082V . .

TY  - CONF
AU  - Tomković, Tanja
AU  - Radovanović, Filip
AU  - Nastasović, Aleksandra
AU  - Marković, Jelena
AU  - Ekmeščić, Bojana
AU  - Vidojković, Sonja
AU  - Onjia, Antonije E.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/784
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2857
AB  - Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.
PB  - Belgrade, Serbia : Society of Physical Chemists of Serbia
C3  - Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture
SP  - 787
EP  - 790
UR  - https://hdl.handle.net/21.15107/rcub_dais_784
ER  - 

@conference{
author = "Tomković, Tanja and Radovanović, Filip and Nastasović, Aleksandra and Marković, Jelena and Ekmeščić, Bojana and Vidojković, Sonja and Onjia, Antonije E.",
year = "2014",
abstract = "Novel polyethersulfone membranes with integrated submicron adsorbent particles were prepared by combining photoirradiation with liquid phase inversion. These particles consist of cross-linked poly(glycidyl methacrylate-co-acrylamido-2-methylpropane sulfonic acid), pGMA-AMPS. After membrane preparation, the epoxide groups were reacted with diethylene triamine to incorporate amine functionalities. Membranes were characterized using FTIR-ATR, SEM and dynamic adsorption of copper from a dilute solution. Effects of monomer concentrations on the properties and separation performance of membrane adsorbers are presented.",
publisher = "Belgrade, Serbia : Society of Physical Chemists of Serbia",
journal = "Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture",
pages = "787-790",
url = "https://hdl.handle.net/21.15107/rcub_dais_784"
}

Tomković, T., Radovanović, F., Nastasović, A., Marković, J., Ekmeščić, B., Vidojković, S.,& Onjia, A. E.. (2014). Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade, Serbia : Society of Physical Chemists of Serbia., 787-790.
https://hdl.handle.net/21.15107/rcub_dais_784

Tomković T, Radovanović F, Nastasović A, Marković J, Ekmeščić B, Vidojković S, Onjia AE. Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture. in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;:787-790.
https://hdl.handle.net/21.15107/rcub_dais_784 .

Tomković, Tanja, Radovanović, Filip, Nastasović, Aleksandra, Marković, Jelena, Ekmeščić, Bojana, Vidojković, Sonja, Onjia, Antonije E., "Polyethersulfone membranes with integrated adsorbent particles for heavy metals capture" in Proceedings of the 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2014):787-790,
https://hdl.handle.net/21.15107/rcub_dais_784 .

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Onjia, Antonije E.
AU  - Matović, Branko
AU  - Grahovac, Nebojsa
AU  - Maksimović, Vesna M.
AU  - Nastasović, Aleksandra
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1181
AB  - Prevention and minimizing corrosion processes on steam generating equipment is highly important in the thermal power industry. The maintenance of feedwater quality at a level corresponding to the standards of technological designing, followed by timely respond to the fluctuation of measured parameters, has a decisive role in corrosion prevention. In this study, the comprehensive chemical control of feedwater quality in 210 MW Thermal Power Plant (TPP) was carried out in order to evaluate its potentiality to assure reliable function of the boiler and discover possible irregularity that might be responsible for frequent boiler tube failures. Sensitive on-line and off-line analytical instruments were used for measuring key and diagnostic parameters considered to be crucial for boiler safety and performances. Obtained results provided evidences for exceeded levels of oxygen, silica, sodium, chloride, sulfate, copper, and conductivity what distinctly demonstrated necessity of feedwater control improvement. Consequently, more effective feedwater quality monitoring concept was recommended. In this paper, the explanation of presumable root causes of corrosive contaminants was given including basic directions for their maintenance in proscribed limits.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Applied Thermal Engineering
T1  - Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant
VL  - 59
IS  - 1-2
SP  - 683
EP  - 694
DO  - 10.1016/j.applthermaleng.2013.06.028
ER  - 

@article{
author = "Vidojković, Sonja and Onjia, Antonije E. and Matović, Branko and Grahovac, Nebojsa and Maksimović, Vesna M. and Nastasović, Aleksandra",
year = "2013",
abstract = "Prevention and minimizing corrosion processes on steam generating equipment is highly important in the thermal power industry. The maintenance of feedwater quality at a level corresponding to the standards of technological designing, followed by timely respond to the fluctuation of measured parameters, has a decisive role in corrosion prevention. In this study, the comprehensive chemical control of feedwater quality in 210 MW Thermal Power Plant (TPP) was carried out in order to evaluate its potentiality to assure reliable function of the boiler and discover possible irregularity that might be responsible for frequent boiler tube failures. Sensitive on-line and off-line analytical instruments were used for measuring key and diagnostic parameters considered to be crucial for boiler safety and performances. Obtained results provided evidences for exceeded levels of oxygen, silica, sodium, chloride, sulfate, copper, and conductivity what distinctly demonstrated necessity of feedwater control improvement. Consequently, more effective feedwater quality monitoring concept was recommended. In this paper, the explanation of presumable root causes of corrosive contaminants was given including basic directions for their maintenance in proscribed limits.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Applied Thermal Engineering",
title = "Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant",
volume = "59",
number = "1-2",
pages = "683-694",
doi = "10.1016/j.applthermaleng.2013.06.028"
}

Vidojković, S., Onjia, A. E., Matović, B., Grahovac, N., Maksimović, V. M.,& Nastasović, A.. (2013). Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant. in Applied Thermal Engineering
Oxford : Pergamon-Elsevier Science Ltd., 59(1-2), 683-694.
https://doi.org/10.1016/j.applthermaleng.2013.06.028

Vidojković S, Onjia AE, Matović B, Grahovac N, Maksimović VM, Nastasović A. Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant. in Applied Thermal Engineering. 2013;59(1-2):683-694.
doi:10.1016/j.applthermaleng.2013.06.028 .

Vidojković, Sonja, Onjia, Antonije E., Matović, Branko, Grahovac, Nebojsa, Maksimović, Vesna M., Nastasović, Aleksandra, "Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant" in Applied Thermal Engineering, 59, no. 1-2 (2013):683-694,
https://doi.org/10.1016/j.applthermaleng.2013.06.028 . .