Removal of coexisting Cr(VI) and 4-chlorophenol through reduction and   Fenton reaction in a single system

doi:10.1016/j.cej.2014.03.017

CORC > 北京大学 > 环境科学与工程学院

	Removal of coexisting Cr(VI) and 4-chlorophenol through reduction and Fenton reaction in a single system
	Yin, Xiaochen ; Liu, Wen ; Ni, Jinren
刊名	chemical engineering journal
	2014
关键词	Zero-valent iron Cr(VI) 4-Chlorophenol Fenton reaction Coexisting pollutants ZERO-VALENT IRON HEXAVALENT CHROMIUM REDUCTION NANOSCALE ZEROVALENT IRON SPECTROSCOPY HR-XPS PHOTOCATALYTIC DEGRADATION AQUEOUS-SOLUTIONS WASTE-WATER CHLORINATED PHENOLS ENHANCED REMOVAL METALLIC IRON
DOI	10.1016/j.cej.2014.03.017
英文摘要	Removal of coexisting Cr(VI) and 4-chlorophenol (4-CP) from aqueous solutions was achieved in a single system, which was capable of reduction of Cr(VI) with synthesized nano-scale zero-valent iron (nZVI) and oxidation of 4-CP with simple addition of H2O2. XRD and)(PS analysis indicated that the prepared nZVI was composed of external FeO and FeOOH and internal Fe-0. Cr(VI) could be completely reduced by nZVI within 20 min, and most of produced Cr(III) was removed mainly via co-precipitation in the form of FeCr2O4 and CrxFe1-x(OH)(3) complex. More importantly, Fe(II) produced from nZVI during reduction played a key role to promote a subsequent Fenton reaction by its coupling with H2O2, and thus significantly enhanced degradation of 4-CP within only 10 min. Solution pH was a primary controlling factor on oxidation of 4-CP, and the optimum pH was about 3. In addition, optimal initial concentration of nZVI and H2O2 were found to be 0.4 g/L and 9.79 mM. Removal efficiency of 4-CP seemed not influenced by initial Cr(VI) of 0-5 mg/L since enough surplus Fe(II) had been maintained for the Fenton reaction at later stage. This study is of particular use for treatment of wastewater containing both heavy metals and bio-refractory organic pollutants in many industrial sectors. (c) 2014 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000337649000010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Environmental; Engineering, Chemical; SCI(E); EI; 13; ARTICLE; nijinren@iee.pku.edu.cn; 89-97; 248
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158256]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yin, Xiaochen,Liu, Wen,Ni, Jinren. Removal of coexisting Cr(VI) and 4-chlorophenol through reduction and Fenton reaction in a single system[J]. chemical engineering journal,2014.
APA	Yin, Xiaochen,Liu, Wen,&Ni, Jinren.(2014).Removal of coexisting Cr(VI) and 4-chlorophenol through reduction and Fenton reaction in a single system.chemical engineering journal.
MLA	Yin, Xiaochen,et al."Removal of coexisting Cr(VI) and 4-chlorophenol through reduction and Fenton reaction in a single system".chemical engineering journal (2014).