Analysis of Absorption and Reaction Kinetics in the Oxidation of Organics in Effluents Using a Porous Electrode Ozonator

›› 2012, Vol. 20 ›› Issue (3): 417-425.

• Festschrift in Honor of Professor Gordon McKay on occasion of his retirement • Previous Articles Next Articles

Analysis of Absorption and Reaction Kinetics in the Oxidation of Organics in Effluents Using a Porous Electrode Ozonator

Alexander P. Mathews¹, Kishora K. Panda²

1. Department of Civil Engineering, Kansas State University, Fiedler Hall, Manhattan, KS 66506, USA;
2. HDR Engineering, Inc., 3230 El Camino Real, Suite 200, Irvine, CA 92604, USA

Received:2012-02-17 Revised:2012-03-21 Online:2012-08-17 Published:2012-06-28
Supported by:
Supported in part by a research grant(BES-0209343) from the U.S.National Science Foundation

Analysis of Absorption and Reaction Kinetics in the Oxidation of Organics in Effluents Using a Porous Electrode Ozonator

Alexander P. Mathews¹, Kishora K. Panda²

1. Department of Civil Engineering, Kansas State University, Fiedler Hall, Manhattan, KS 66506, USA;
2. HDR Engineering, Inc., 3230 El Camino Real, Suite 200, Irvine, CA 92604, USA

通讯作者: Alexander P. Mathews, E-mail: alex@k-state.edu
基金资助:
Supported in part by a research grant(BES-0209343) from the U.S.National Science Foundation

Abstract

Abstract: A novel electrode design for the in situ generation of ozone in the reaction zone of a tubular reactor is described in this work.The ozone generator uses a porous inner electrode tube in the corona discharge assembly,and the ozone generated around the outer periphery of the porous tube diffuses into the tubular reactor and reacts with the contaminants in the fluid that is being treated.A mathematical model that includes absorption and second order reaction in the film is developed to describe ozonation kinetics of a contaminant dye in the tubular reactor.The model describes the experimental data for dye decolorization,oxidation byproducts,dissolved ozone,and ozone gas concentrations well.Model analysis indicates that the fast dye decolorization reaction occurs partly in the liquid film and partly in the bulk fluid.The model can be used in the selection of appropriate gas-liquid contactors for efficient oxidation of contaminants in effluents.

Key words: ozonation kinetics, absorption and reaction, ozone generator

摘要： A novel electrode design for the in situ generation of ozone in the reaction zone of a tubular reactor is described in this work.The ozone generator uses a porous inner electrode tube in the corona discharge assembly,and the ozone generated around the outer periphery of the porous tube diffuses into the tubular reactor and reacts with the contaminants in the fluid that is being treated.A mathematical model that includes absorption and second order reaction in the film is developed to describe ozonation kinetics of a contaminant dye in the tubular reactor.The model describes the experimental data for dye decolorization,oxidation byproducts,dissolved ozone,and ozone gas concentrations well.Model analysis indicates that the fast dye decolorization reaction occurs partly in the liquid film and partly in the bulk fluid.The model can be used in the selection of appropriate gas-liquid contactors for efficient oxidation of contaminants in effluents.

关键词: ozonation kinetics, absorption and reaction, ozone generator

Alexander P. Mathews, Kishora K. Panda. Analysis of Absorption and Reaction Kinetics in the Oxidation of Organics in Effluents Using a Porous Electrode Ozonator[J]. , 2012, 20(3): 417-425.

References

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Analysis of Absorption and Reaction Kinetics in the Oxidation of Organics in Effluents Using a Porous Electrode Ozonator

Analysis of Absorption and Reaction Kinetics in the Oxidation of Organics in Effluents Using a Porous Electrode Ozonator

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