Degradation of methyl orange by electro-Fenton-like process in the presence of chloride ion

被引：11

作者：

He, Wenyan ^{[1
]}

Yan, Xiaoning ^{[2
]}

Ma, Hongzhu ^{[1
]}

Yu, Jie ^{[1
]}

Wang, Jing ^{[1
]}

Huang, Xiaoli ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Inst Energy Chem, Sch Chem & Chem Engn, Xian 710062, Peoples R China

[2] Xian Hangjie Chem Technol Co Ltd, Xian 710067, Shaanxi Provinc, Peoples R China

来源：

DESALINATION AND WATER TREATMENT | 2013年 / 51卷 / 34-36期

关键词：

Azo dye; Methyl orange; Direct electrochemical process; Electro-Fenton; Response surface methodology; Chloride ion; WASTE-WATER; ANODIC-OXIDATION; HYDROGEN-PEROXIDE; AQUEOUS-SOLUTION; DECOLORIZATION; REMOVAL; ACID; KINETICS; MINERALIZATION; CATHODE;

D O I：

10.1080/19443994.2013.792133

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The degradation of azo dye methyl orange (MO) in wastewater by several electrochemical processes, especially the electro-Fenton-like process with chloride ion, was investigated. The effect of some important operating parameters, Fe3+ and Cl- dosage, the initial concentration of MO on the decolorization and COD removal was also investigated. The response surface methodology was selected to optimize the operating conditions, and the results showed that almost 100% color and 78.93% COD removal efficiency were obtained, when [Fe3+]=2.14mM, [Cl-]=16.36mM, [MO]=106mgL(-1), [Na2SO4]=0.05M, pH=3 at 2.1 A, and approximately 96.93% COD removal was achieved after 90min of electrolysis and 8min centrifuged with speed of 500rmin(-1). The oxidation kinetics of the process and the reaction order were also studied.

引用

页码：6562 / 6571

页数：10

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