Degradation of 4-nitrophenol in aqueous medium by electro-Fenton method

被引：231

作者：

Zhang, Hui ^{[1
]}

Fei, Chengzhi ^{[1
]}

Zhang, Daobin ^{[1
]}

Tang, Feng ^{[1
]}

机构：

[1] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2007年 / 145卷 / 1-2期

关键词：

4-nitrophenol; Fenton's reagent; electro-Fenton; advanced oxidation process; wastewater treatment;

D O I：

10.1016/j.jhazmat.2006.11.016

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The degradation of 4-nitrophenol by electro-Fenton (E-Fenton) method was carried out in batch recirculation mode. The effect of operating conditions such as electrical current, Fenton's reagent dosage, Fe(II) to H2O2 molar ratio, and H2O2 feeding time on the efficiency of E-Fenton process was investigated. It was found that E-Fenton method showed the synergetic effect on COD removal. The increase of Fenton's reagent dosage, Fe(II) to H2O2 molar ratio, and the electrical current would lead to the increase of COD removal efficiency. Continuous addition of hydrogen peroxide was more effective than the addition of hydrogen peroxide in a single step and there existed an optimal H2O2 feeding time for COD removal. The reaction system was modeled as a plug flow reactor (PFR) in series with a continuous stirred tank reactor (CSTR), and the pseudo-first order rate constant of COD removal was determined from the model based on the experimental data. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：227 / 232

页数：6

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