Optimization of Fenton and electro-Fenton oxidation of biologically treated coking wastewater using response surface methodology

被引：227

作者：

Zhu, Xiaobiao ^{[1
]}

Tian, Jinping ^{[1
]}

Liu, Rui ^{[2
]}

Chen, Lujun ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Yangtze Delta Reg Inst, Res Inst Environm, Jiaxing 314006, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2011年 / 81卷 / 03期

关键词：

Fenton; Electro-Fenton; Coking wastewater; Response surface methodology; Box-Behnken design; ARTIFICIAL NEURAL-NETWORK; PHOTO-FENTON; LANDFILL LEACHATE; COD REMOVAL; DEGRADATION; DESTRUCTION; RED;

D O I：

10.1016/j.seppur.2011.08.023

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

In this study, Fenton and electro-Fenton were employed to treat biologically stabilized coking wastewater, i.e. the effluent of a biological coking wastewater treatment. The Box-Behnken experimental design (BBD) and response surface methodology (RSM) were used to design and optimize the performance of both processes. The regression quadratic model describing the TOC removal efficiency of Fenton and electro-Fenton process was developed and validated by the analysis of variances (ANOVA), respectively. The significance levels of linear and interaction effects of the reaction parameters on processes efficiencies were obtained. The optimum parameters were determined as pH 4, 1.2 h reaction time, 40 mM of Fe(2+) and H(2)O(2) for Fenton reaction; and pH 4, 1.8 h reaction time, 0.6 mM of Fe(2+) and 3.7 mA/cm(2) of current density for electro-Fenton. The corresponding TOC removal efficiencies were about 75% and 55% for Fenton and electro-Fenton, respectively. Both Fenton and electro-Fenton are effective in advanced treatment for coking wastewater, and the response surface methodology is suitable for the design and optimization of the processes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：444 / 450

页数：7

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