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.
Keywords:
ozone volumetric mass transfer coefficient / bubble column with two-fluid nozzle gas distributor / zapreminski koeficijent prenosa mase / barbotažna kolona sa dvofluidnom mlaznicom / ozon
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 . .
