The mechanism and application of the electro-Fenton process for azo dye Acid Red 14 degradation using an activated carbon fibre felt cathode

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	The mechanism and application of the electro-Fenton process for azo dye Acid Red 14 degradation using an activated carbon fibre felt cathode
	Wang, Aimin ; Li, Yu-You ; Ru, Jia
刊名	JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
	2010-11
卷号	85 期号:11 页码:1463-1470
关键词	electro-Fenton process mechanism Acid Red 14 hydroxyl radical activated carbon fibre cathode biodegradability
中文摘要	BACKGROUND: The discharge of azo dyes into the environment poses concerns due to their limited biodegradability. The electro-Fenton process (EF) is a good method to effectively degrade these dyes. The aim of this work was to study the mechanism and the feasibility of the EF reaction using an activated carbon fibre (ACF) cathode. In this study, two methods were used to measure the reactive species generated in anodic oxidation (AO), anodic oxidation with electrogenerated H(2)O(2) (AO-H(2)O(2)) and the EF process. Acid Red 14 (AR14) was chosen as a model pollutant. The effects of the operational parameters, pH and initial concentrations were investigated. A short-term biodegradability test was also carried out to evaluate the EF process from a biological point of view. RESULTS: After 2 h EF reaction 118.7 mu mol L(-1) (center dot)OH were produced, which was much higher than that of the AO-H(2)O(2) (63.2 mu mol L(-1)) process. H(2)O(2) is largely generated and Fe(3+) efficiently reduced on the high surface area of the ACF cathode. The EF process provides more effective degradation of AR14 than the conventional Fenton process, and its current efficiency is significantly affected by the initial pH and the initial AR14 concentration. Following EF treatment, the biodegradability of AR14 is significantly increased. CONCLUSION: The higher formation of (center dot)OH in the EF process suggests it is an effective method for pollutant removal. This process also leads to increased biodegradability, which is expected to facilitate subsequent biological treatment. (C) 2010 Society of Chemical Industry
WOS记录号	WOS:000283631600005
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21285]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Wang, Aimin,Li, Yu-You,Ru, Jia. The mechanism and application of the electro-Fenton process for azo dye Acid Red 14 degradation using an activated carbon fibre felt cathode[J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,2010,85(11):1463-1470.
APA	Wang, Aimin,Li, Yu-You,&Ru, Jia.(2010).The mechanism and application of the electro-Fenton process for azo dye Acid Red 14 degradation using an activated carbon fibre felt cathode.JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,85(11),1463-1470.
MLA	Wang, Aimin,et al."The mechanism and application of the electro-Fenton process for azo dye Acid Red 14 degradation using an activated carbon fibre felt cathode".JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 85.11(2010):1463-1470.