Photoelectrocatalytic degradation of oxalic acid in aqueous phase with a novel three-dimensional electrode-hollow quartz tube photoelectrocatalytic reactor

被引：41

作者：

An, TC ^{[1
]}

Li, GY

Zhu, XH

Fu, JM

Sheng, GY

Zhu, Z

机构：

[1] Chinese Acad Sci, State Key Organ Geochem, Guangdong Key Lab Environm Resources Ulilizat & P, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China

[2] Zhongshan Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China

[3] Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Gansu, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2005年 / 279卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

photoelectrocatalytic; photocatalytic; three-dimensional electrode; reactor; oxalic acid;

D O I：

10.1016/j.apcata.2004.10.033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Taking oxalic acid as an index, we investigated photoelectrocatalytic degradation of organic pollutants by using a newly designed photoelectrocatalytic reactor coupled by a three-dimensional electrode reactor with a packed-bed hollow quartz tube photocatalytic reactor. The efficiency of the photoelectrocatalytic degradation was determined with COD removal from the tested wastewater. the COD removal efficiencies were considerably dependent on the cell voltage and the concentration of the supporting electrolyte. The experimental results showed that oxalic acid could be degraded more efficiently by photoelectrocatalytic process than individually by photocatalytic or electrochemical oxidation in the photoelectrocatalytic reactor. The introduction of hollow quartz tubes into the three-dimensional electrode - packed-bed photoelectrocatalytic reactor could provide a solution to the earlier drawbacks: the inability to treat the high concentration and low-transmittance wastewater by photocatalytic technology. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：247 / 256

页数：10

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