Modeling of organic pollutant destruction in a stirred-tank reactor by ozonation.
Destruction of organic contaminants in water by ozonation is a gas-liquid process which involves ozone mass transfer and fast irreversible chemical reactions. Ozonation reactor design and process optimizing require the modeling of the gas-liquid interactions within the reactor. In this paper a theoretical model combining the fluid dynamic and reaction kinetic parameters is proposed for predicting the destruction rates of organic pollutants in a semi-batch stirred-tank reactor by ozonation. A simple expression for the enhancement factor as our previous work has been applied to evaluate the chemical mass transfer coefficient in ozone absorption, 2,4-dichlorophenol (2,4-DCP) and 2,6-DCP or their mixture are chosen as the model compounds for simulating, and the predicted DCP concentrations are compared with some measured data.
Cheng
J
J
College of Chemical Engineering, South China University of Technology, Guangzhou 510641, China.
Yang
Z R
ZR
Chen
H Q
HQ
Kuo
C H
CH
Zappi
E M
EM
D000042:Absorption; D000871:Anthelmintics / Q000737:chemistry; D002733:Chlorophenols / Q000737:chemistry; D005740:Gases; D008962:Models, Theoretical; D009930:Organic Chemicals; D010083:Oxidants, Photochemical / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D014865:Waste Disposal, Fluid; D014873:Water Pollutants / Q000032:analysis*
D000871:Anthelmintics; D002733:Chlorophenols; D005740:Gases; D009930:Organic Chemicals; D010083:Oxidants, Photochemical; D014873:Water Pollutants; D010126:Ozone; C032729:2,6-dichlorophenol; C004762:2,4-dichlorophenol