Electrochemical treatment of anionic surfactants in synthetic wastewater with three-dimensional electrodes

被引：161

作者：

Kong, Wuping ^{[1
]}

Wang, Bo ^{[1
]}

Ma, Hongzhu ^{[1
]}

Gu, Lin ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Coll Chem & Mat Sci, Inst Energy Chem, Xian 710062, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2006年 / 137卷 / 03期

关键词：

modified kaolin particles; three-dimensional electrode; Ti/Co/SnO2-Sb2O3; anode; COD removal;

D O I：

10.1016/j.jhazmat.2006.04.037

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The electrochemical oxidation of anionic surfactants (sodium dodecyl benzene sulfonate, DBS) contained in simulated wastewater treated by three-dimensional electrode system with combined modified kaolin served as packed bed particle electrodes and Ti/Co/SnO2-Sb2O3 anode was studied, the chemical oxygen demand (COD) removal of pollutants in the solutions was also investigated. The results showed that the three-dimensional electrodes in combined process could effectively decompose anionic surfactants. The COD removal efficiency can reach 86%, much higher than that of Ti/Co/SnO2-Sb2O3 electrodes used singly or modified kaolin employed singly (graphite as anode and cathode) on the same condition of pH 3 and 38.1 mA/cm(2) current density. The current efficiency and kinetic constant were calculated and energy consumption was studied. At the same time the influence of pH and current density on COD removal efficiency with combined three-dimensional electrodes was also investigated, respectively. The optimal initial pH value of degradation is 3 (acid condition), and a minor COD removal increase follows higher current density. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1532 / 1537

页数：6

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