Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy
Само за регистроване кориснике
2013
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10 LT = alpha LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to cal...cite decomposition, which takes place through a two-dimensional diffusion mechanism.
Кључне речи:
Bauxite red mud / Decomposition / Kinetics / Apparent activation energy / Density distribution functionИзвор:
International Journal of Mineral Processing, 2013, 123, 46-59Издавач:
- Elsevier
Финансирање / пројекти:
- Динамика нелинеарних физичкохемијских и биохемијских система са моделирањем и предвиђањем њихових понашања под неравнотежним условима (RS-172015)
- Нове технологије за мониторинг и заштиту животног окружења од штетних хемијских супстанци и радијационог оптерећења (RS-43009)
DOI: 10.1016/j.minpro.2013.05.003
ISSN: 0301-7516
WoS: 000323795500007
Scopus: 2-s2.0-84879077673
Институција/група
IHTMTY - JOUR AU - Jankovic, Bojan AU - Smiciklas, Ivana AU - Stajić-Trošić, Jasna AU - Antonovic, Dusan PY - 2013 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1178 AB - Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10 LT = alpha LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calcite decomposition, which takes place through a two-dimensional diffusion mechanism. PB - Elsevier T2 - International Journal of Mineral Processing T1 - Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy VL - 123 SP - 46 EP - 59 DO - 10.1016/j.minpro.2013.05.003 ER -
@article{ author = "Jankovic, Bojan and Smiciklas, Ivana and Stajić-Trošić, Jasna and Antonovic, Dusan", year = "2013", abstract = "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10 LT = alpha LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calcite decomposition, which takes place through a two-dimensional diffusion mechanism.", publisher = "Elsevier", journal = "International Journal of Mineral Processing", title = "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy", volume = "123", pages = "46-59", doi = "10.1016/j.minpro.2013.05.003" }
Jankovic, B., Smiciklas, I., Stajić-Trošić, J.,& Antonovic, D.. (2013). Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy. in International Journal of Mineral Processing Elsevier., 123, 46-59. https://doi.org/10.1016/j.minpro.2013.05.003
Jankovic B, Smiciklas I, Stajić-Trošić J, Antonovic D. Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy. in International Journal of Mineral Processing. 2013;123:46-59. doi:10.1016/j.minpro.2013.05.003 .
Jankovic, Bojan, Smiciklas, Ivana, Stajić-Trošić, Jasna, Antonovic, Dusan, "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy" in International Journal of Mineral Processing, 123 (2013):46-59, https://doi.org/10.1016/j.minpro.2013.05.003 . .