TY  - JOUR
AU  - Đeković-Šević, Milica
AU  - Bošković-Vragolović, Nevenka
AU  - Garić Grulović, Radmila
AU  - Pejanović, Srđan
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2326
AB  - This work deals with gas absorption accompanied by chemical reaction in a liquid phase. Ozone absorption in potassium indigotrisulfonate solution was investigated in a batch bubble column. Enhancement factor for absorption accompanied by instantaneous chemical reaction in the liquid phase was experimentally determined, as a ratio of the volumetric mass transfer coefficient for the absorption accompanied by reaction to that for pure physical absorption. The influence of (a) the initial concentration of the solute from liquid phase and (b) the ozone concentration in gas phase on the enhancement factor were experimentally examined. The absorption accompanied by instantaneous chemical reaction is a diffusion-controlled process, whose rate depends upon the diffusivities of the absorbing gas and the solute in liquid phase. The influence of these diffusivities was found to be more significant for lower values of the enhancement factor. The rate of ozone absorption was followed by the time change of the solution color, using new method based on the computer program SigmaScan Pro 5 (Systat Software, Inc., San Jose, CA, USA). This investigation is a contribution to the prediction of the ozone consumption in wastewater treatment, in cases when ozone instantaneously reacts with substances present in water.
PB  - Taylor & Francis
T2  - Chemical Engineering Communications
T1  - Experimental study on the ozone absorption accompanied by instantaneous chemical reaction
VL  - 205
IS  - 5
SP  - 571
EP  - 580
DO  - 10.1080/00986445.2017.1399125
ER  - 

@article{
author = "Đeković-Šević, Milica and Bošković-Vragolović, Nevenka and Garić Grulović, Radmila and Pejanović, Srđan",
year = "2018",
abstract = "This work deals with gas absorption accompanied by chemical reaction in a liquid phase. Ozone absorption in potassium indigotrisulfonate solution was investigated in a batch bubble column. Enhancement factor for absorption accompanied by instantaneous chemical reaction in the liquid phase was experimentally determined, as a ratio of the volumetric mass transfer coefficient for the absorption accompanied by reaction to that for pure physical absorption. The influence of (a) the initial concentration of the solute from liquid phase and (b) the ozone concentration in gas phase on the enhancement factor were experimentally examined. The absorption accompanied by instantaneous chemical reaction is a diffusion-controlled process, whose rate depends upon the diffusivities of the absorbing gas and the solute in liquid phase. The influence of these diffusivities was found to be more significant for lower values of the enhancement factor. The rate of ozone absorption was followed by the time change of the solution color, using new method based on the computer program SigmaScan Pro 5 (Systat Software, Inc., San Jose, CA, USA). This investigation is a contribution to the prediction of the ozone consumption in wastewater treatment, in cases when ozone instantaneously reacts with substances present in water.",
publisher = "Taylor & Francis",
journal = "Chemical Engineering Communications",
title = "Experimental study on the ozone absorption accompanied by instantaneous chemical reaction",
volume = "205",
number = "5",
pages = "571-580",
doi = "10.1080/00986445.2017.1399125"
}

Đeković-Šević, M., Bošković-Vragolović, N., Garić Grulović, R.,& Pejanović, S.. (2018). Experimental study on the ozone absorption accompanied by instantaneous chemical reaction. in Chemical Engineering Communications
Taylor & Francis., 205(5), 571-580.
https://doi.org/10.1080/00986445.2017.1399125

Đeković-Šević M, Bošković-Vragolović N, Garić Grulović R, Pejanović S. Experimental study on the ozone absorption accompanied by instantaneous chemical reaction. in Chemical Engineering Communications. 2018;205(5):571-580.
doi:10.1080/00986445.2017.1399125 .

Đeković-Šević, Milica, Bošković-Vragolović, Nevenka, Garić Grulović, Radmila, Pejanović, Srđan, "Experimental study on the ozone absorption accompanied by instantaneous chemical reaction" in Chemical Engineering Communications, 205, no. 5 (2018):571-580,
https://doi.org/10.1080/00986445.2017.1399125 . .

TY  - JOUR
AU  - Đeković-Šević, Milica
AU  - Bošković-Vragolović, Nevenka
AU  - Takić, Ljiljana
AU  - Garić Grulović, Radmila
AU  - Pejanović, Srđan
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1643
AB  - Experimental investigation of gas-liquid mass transfer of ozone in water, in bubble column with two-fluid nozzle gas distributor (BKDM), under different operating conditions, is presented in this work. The main objective was to determine the ozone volumetric mass transfer coefficient, kL a, in calm uniform section of the column, under different values of gas and liquid flow rates. Obtained values of these coefficients were compared with the values in countercurrent bubble column. The critical liquid flowrate, when gas hold up reaches its maximum, was experimentally determined. It was shown that the maximum value of the ozone volumetric mass transfer coefficient is obtained just when liquid flowrate is at its critical value.
AB  - U ovom radu prikazani su rezultati eksperimentalnih ispitivanja prenosa mase gas-tečnost pri ozonizaciji vode u barbotažnoj koloni sa dvofluidnom mlaznicom (BKDM) pod različitim operativnim uslovima. Cilj ovih ispitivanja bio je određivanje vrednosti zapreminskog koeficijenta prenosa mase ozona u vodi, kLa, u mirnoj zoni kolone, pri različitim protocima gasne i tečne faze. U radu je dato i poređenje kLa u BKDM sa vrednostima kLa u klasičnoj protivstrujnoj barbotažnoj koloni sa poroznom pločom tj. fritom. Eksperimentalno je određena vrednost kritičnog protoka tečnosti, pri kojem sadržaj gasa u disperziji, u mirnoj zoni kolone, dostiže svoju maksimalnu vrednost. Rezultati su pokazali da se pri kritičnom protoku tečnosti dobija maksimalna vrednost zapreminskog koeficijenta prenosa mase ozona u vodi.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Determination of the ozone volumetric mass transfer coefficient in bubble column with two-fluid nozzle gas distributor
T1  - Određivanje zapreminskog koeficijenta prenosa mase ozona u barbotažnoj koloni sa dvofluidnom mlaznicom
VL  - 69
IS  - 5
SP  - 553
EP  - 559
DO  - 10.2298/HEMIND140716075D
ER  - 

@article{
author = "Đeković-Šević, Milica and Bošković-Vragolović, Nevenka and Takić, Ljiljana and Garić Grulović, Radmila and Pejanović, Srđan",
year = "2015",
abstract = "Experimental investigation of gas-liquid mass transfer of ozone in water, in bubble column with two-fluid nozzle gas distributor (BKDM), under different operating conditions, is presented in this work. The main objective was to determine the ozone volumetric mass transfer coefficient, kL a, in calm uniform section of the column, under different values of gas and liquid flow rates. Obtained values of these coefficients were compared with the values in countercurrent bubble column. The critical liquid flowrate, when gas hold up reaches its maximum, was experimentally determined. It was shown that the maximum value of the ozone volumetric mass transfer coefficient is obtained just when liquid flowrate is at its critical value., U ovom radu prikazani su rezultati eksperimentalnih ispitivanja prenosa mase gas-tečnost pri ozonizaciji vode u barbotažnoj koloni sa dvofluidnom mlaznicom (BKDM) pod različitim operativnim uslovima. Cilj ovih ispitivanja bio je određivanje vrednosti zapreminskog koeficijenta prenosa mase ozona u vodi, kLa, u mirnoj zoni kolone, pri različitim protocima gasne i tečne faze. U radu je dato i poređenje kLa u BKDM sa vrednostima kLa u klasičnoj protivstrujnoj barbotažnoj koloni sa poroznom pločom tj. fritom. Eksperimentalno je određena vrednost kritičnog protoka tečnosti, pri kojem sadržaj gasa u disperziji, u mirnoj zoni kolone, dostiže svoju maksimalnu vrednost. Rezultati su pokazali da se pri kritičnom protoku tečnosti dobija maksimalna vrednost zapreminskog koeficijenta prenosa mase ozona u vodi.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Determination of the ozone volumetric mass transfer coefficient in bubble column with two-fluid nozzle gas distributor, Određivanje zapreminskog koeficijenta prenosa mase ozona u barbotažnoj koloni sa dvofluidnom mlaznicom",
volume = "69",
number = "5",
pages = "553-559",
doi = "10.2298/HEMIND140716075D"
}

Đeković-Šević, M., Bošković-Vragolović, N., Takić, L., Garić Grulović, R.,& Pejanović, S.. (2015). Determination of the ozone volumetric mass transfer coefficient in bubble column with two-fluid nozzle gas distributor. in Hemijska industrija
Association of Chemical Engineers of Serbia., 69(5), 553-559.
https://doi.org/10.2298/HEMIND140716075D

Đeković-Šević M, Bošković-Vragolović N, Takić L, Garić Grulović R, Pejanović S. Determination of the ozone volumetric mass transfer coefficient in bubble column with two-fluid nozzle gas distributor. in Hemijska industrija. 2015;69(5):553-559.
doi:10.2298/HEMIND140716075D .

Đeković-Šević, Milica, Bošković-Vragolović, Nevenka, Takić, Ljiljana, Garić Grulović, Radmila, Pejanović, Srđan, "Determination of the ozone volumetric mass transfer coefficient in bubble column with two-fluid nozzle gas distributor" in Hemijska industrija, 69, no. 5 (2015):553-559,
https://doi.org/10.2298/HEMIND140716075D . .