标题：Electro-enhanced goethite activation of peroxydisulfate for the decolorization of Orange II at neutral pH: Efficiency, stability and mechanism作者：Lin, Heng; Li, Yating; Mao, Xiaoyu; Zhang, Hui

来源出版物：JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS 卷：65 页码：390-398 DOI: 10.1016/j.jtice.2016.05.050 出版年：AUG 2016

摘要：The decolorization of Orange II by an electro-enhanced goethite (alpha-FeOOH) activating peroxydisulfate (PDS) process (EC/alpha-FeOOH/PDS process) is reported in this study. Sulfate radicals was produced by activating PDS with Fe(II), which was generated continuously from the cathodic reduction of Fe(III) on alpha-FeOOH surface. The decolorization of Orange II showed little dependence on the initial pH. The comparison of Orange II decolorization under different systems was investigated. The surface properties of a-FeOOH before and after reaction were investigated by X-ray Photoelectron Spectroscopy (XPS). The radical species generated in EC/alpha-FeOOH/PDS process were determined by Electron Paramagnetic Resonance (EPR). On the basis of the results, the mechanism of Orange II decolorization in EC/alpha-FeOOH/PDS process was proposed. The catalyst alpha-FeOOH maintained its high activity during repeated batch experiments. Response surface methodology (RSM) based on Box-Behnken statistical experiment design (BBD) was applied to analyze the experimental variables. The response surface methodology models were derived from the experimental results and the response surface plots of the pseudo-first-order decolorization rate constant were developed accordingly. (C) 2016 Taiwan Institute of Chemical Engineers.

入藏号：WOS:000380624500038

文献类型：Article

语种：English

作者关键词：Sulfate radical, Hydroxyl radical, Peroxydisulfate, Goethite, Electrochemical oxidation

扩展关键词：RESPONSE-SURFACE METHODOLOGY; ZERO-VALENT IRON; AQUEOUS-SOLUTION; FENTON PROCESS; HETEROGENEOUS ACTIVATION; PERSULFATE OXIDATION; WASTE-WATER; ORGANIC POLLUTANTS; CONTAMINATED SOIL; SULFATE RADICALS

通讯作者地址：Zhang, H, Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址：

[Lin, Heng; Li, Yating; Mao, Xiaoyu; Zhang, Hui]Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Lin, Heng; Zhang, Hui] Wuhan Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.

研究方向：Engineering

ISSN：1876-1070

eISSN: 1876-1089

影响因子：2.848