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.

• 香港科技大学化学与生物分子工程系戈登·麦凯教授退休纪念专刊 • 上一篇下一篇

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

收稿日期:2012-02-17 修回日期:2012-03-21 出版日期:2012-06-28 发布日期:2012-08-17
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

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

摘要/Abstract

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

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

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.

参考文献

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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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