Adsorption of Cr(VI) ions using the amphiphilic gels based on   2-(dimethylamino)ethyl methacrylate modified with 1-bromoalkanes

doi:10.1016/j.cej.2011.07.033

CORC > 北京大学 > 化学与分子工程学院

	Adsorption of Cr(VI) ions using the amphiphilic gels based on 2-(dimethylamino)ethyl methacrylate modified with 1-bromoalkanes
	Cheng, Qiang ; Li, Cancan ; Xu, Ling ; Li, Jiuqiang ; Zhai, Maolin
刊名	chemical engineering journal
	2011
关键词	Amphiphilic gels 2-(Dimethylamino)ethyl methacrylate Adsorption Cr(VI) ions HEXAVALENT CHROMIUM MODIFIED RECTORITE WASTE-WATER REMOVAL EQUILIBRIUM KINETICS BIOSORPTION ADSORBENTS TRIVALENT HYDROGELS
DOI	10.1016/j.cej.2011.07.033
英文摘要	The amphiphilic gels based on 2-(dimethylamino)ethyl methacrylate modified with different 1-bromoalkanes (1-C(n)H(2n+1)Br, n=2, 4, 6) were synthesized by radiation-induced polymerization and cross-linking. Adsorption behavior of Cr(VI) ions using the resulting gels was investigated. The length of alkyl side chain had significant influence on both adsorption rate and adsorption capacity of Cr(VI) ions into the resulting gels. Maximum adsorption capacities of Cr(VI) ions into the gels with different length of alkyl side chains (n = 2, 4, 6) at 25 degrees C were 210.5, 168.9, and 147.5 mg/g, respectively, based on the Langmuir isotherms. FTIR and XPS analysis revealed that Cr(VI) ions were adsorbed into the gels through ion-exchange mechanism. High pH and ionic strength could reduce the Cr(VI) uptake, which could be used for desorption of Cr(VI) ions from the gels. (C) 2011 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000295504300006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Environmental; Engineering, Chemical; SCI(E); EI; 21; ARTICLE; 1; 42-48; 173
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151022]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Cheng, Qiang,Li, Cancan,Xu, Ling,et al. Adsorption of Cr(VI) ions using the amphiphilic gels based on 2-(dimethylamino)ethyl methacrylate modified with 1-bromoalkanes[J]. chemical engineering journal,2011.
APA	Cheng, Qiang,Li, Cancan,Xu, Ling,Li, Jiuqiang,&Zhai, Maolin.(2011).Adsorption of Cr(VI) ions using the amphiphilic gels based on 2-(dimethylamino)ethyl methacrylate modified with 1-bromoalkanes.chemical engineering journal.
MLA	Cheng, Qiang,et al."Adsorption of Cr(VI) ions using the amphiphilic gels based on 2-(dimethylamino)ethyl methacrylate modified with 1-bromoalkanes".chemical engineering journal (2011).