Phenol oxidation by combined cavitation water jet and hydrogen peroxide

Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (4): 760-767.

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Phenol oxidation by combined cavitation water jet and hydrogen peroxide

LU Yiyu1,2, LIU Yong1,2,3, XIA Binwei1,2, ZUO Weiqin1,2,3

1 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China 2 State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam, Chongqing Uni-versity, Chongqing 400044, China 3 College of Safety Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China

Received:2011-06-22 Revised:2011-11-22 Online:2011-11-22 Published:2012-08-28

空化水射流结合双氧水降解苯酚

卢义玉1,2, 刘勇1,2,3, 夏彬伟1,2, 左伟芹1,2,3

1 State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China 2 State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam, Chongqing Uni-versity, Chongqing 400044, China 3 College of Safety Science and Technology, Henan Polytechnic University, Jiaozuo 454000, China

Abstract

Abstract: The paper presents results of phenol oxidized under the conditions of high temperature created during collapse of cavitation bubbles. The degradation efficiency has been greatly improved by using cavitation water jets combined with H2O2 as demonstrated in laboratory tests. Various factors affecting phenol removal ratio were examined and the degradation mechanism was revealed by high performance liquid chromatography (HPLC). The results showed that 99.85% of phenol was mineralized when phenol concentration was 100 mg•L?1 with pH value of 3.0, H2O2 concentration of 300 mg•L?1, confining pressure of 0.5 MPa, and pumping pressure of 20 MPa. The intermediate products after phenol oxidation were composed of catechol, hydroquinone and p-benzoquinone. Finally, phenol was degraded into maleic acid and acetic acid. Furthermore, a dynamic model of phenol oxidation via cavitation water jets combined with H2O2 has been developed.

Key words: phenol oxidation, cavitation water jet, hydrogen peroxide, wastewater treatment, correlation coefficient, removal ratio

摘要： The paper presents results of phenol oxidized under the conditions of high temperature created during collapse of cavitation bubbles. The degradation efficiency has been greatly improved by using cavitation water jets combined with H2O2 as demonstrated in laboratory tests. Various factors affecting phenol removal ratio were examined and the degradation mechanism was revealed by high performance liquid chromatography (HPLC). The results showed that 99.85% of phenol was mineralized when phenol concentration was 100 mg•L?1 with pH value of 3.0, H2O2 concentration of 300 mg•L?1, confining pressure of 0.5 MPa, and pumping pressure of 20 MPa. The intermediate products after phenol oxidation were composed of catechol, hydroquinone and p-benzoquinone. Finally, phenol was degraded into maleic acid and acetic acid. Furthermore, a dynamic model of phenol oxidation via cavitation water jets combined with H2O2 has been developed.

关键词: phenol oxidation, cavitation water jet, hydrogen peroxide, wastewater treatment, correlation coefficient, removal ratio

LU Yiyu, LIU Yong, XIA Binwei, ZUO Weiqin. Phenol oxidation by combined cavitation water jet and hydrogen peroxide[J]. Chin.J.Chem.Eng., 2012, 20(4): 760-767.

卢义玉, 刘勇, 夏彬伟, 左伟芹. 空化水射流结合双氧水降解苯酚[J]. Chinese Journal of Chemical Engineering, 2012, 20(4): 760-767.

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Phenol oxidation by combined cavitation water jet and hydrogen peroxide

空化水射流结合双氧水降解苯酚

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