Adsorption of Cr(VI) using silica-based adsorbent prepared by   radiation-induced grafting

doi:10.1016/j.jhazmat.2008.11.053

CORC > 北京大学 > 化学与分子工程学院

	Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting
	Qiu, Jingyi ; Wang, Ziyue ; Li, Huibo ; Xu, Ling ; Peng, Jing ; Zhai, Maolin ; Yang, Chao ; Li, Jiuqiang ; Wei, Genshuan
刊名	journal of hazardous materials
	2009
关键词	Silica Radiation grafting Adsorbent Dimethylaminoethyl methacrylate Cr(VI) ANION-EXCHANGE MEMBRANE SOLID-PHASE EXTRACTION CARBON FABRIC CLOTH METAL-IONS HEXAVALENT CHROMIUM INDUCED POLYMERIZATION SORPTION CAPACITY ACTIVATED CARBONS MESOPOROUS SILICA HEAVY-METALS
DOI	10.1016/j.jhazmat.2008.11.053
英文摘要	Silica-based adsorbent was prepared by radiation-induced grafting of dimethylaminoethyl methacrylate (DMAEMA) onto the silanized silica followed by a protonation process. The FTIR spectra and XPS analysis proved that DMAEMA was grafted successfully onto the silica Surface. The resultant adsorbent manifested a high ion exchange capacity (IEC) of ca. 1.30 mmol/g and the Cr(VI) adsorption behavior of the adsorbent was further investigated, revealing the recovery of Cr(VI) increased with the adsorbent feed and the equilibrium adsorption could be achieved within 40 min. The adsorption capacity, strongly depended on the pH of the solution, reached a maximum Cr(VI) uptake (ca. 68 mg/g) as the pH was in the range of 2.5-5.0. Furthermore, even in strong acidic (4.0 mol/L HNO(3)) or alkaline media (pH 11.0), the adsorbent had a sound Cr(VI) uptake capacity (ca. 22 and 30 mg/g, respectively), and the adsorption followed Langmuir mode. The results indicated that this adsorbent, prepared via a convenient approach, is applicable for removing heavy-metal-ion pollutants (e.g. Cr(VI)) from waste waters. (C) 2008 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000266615100036&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Environmental; Engineering, Civil; Environmental Sciences; SCI(E); EI; PubMed; 58; ARTICLE; 1; 270-276; 166
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150143]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Qiu, Jingyi,Wang, Ziyue,Li, Huibo,et al. Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting[J]. journal of hazardous materials,2009.
APA	Qiu, Jingyi.,Wang, Ziyue.,Li, Huibo.,Xu, Ling.,Peng, Jing.,...&Wei, Genshuan.(2009).Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting.journal of hazardous materials.
MLA	Qiu, Jingyi,et al."Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting".journal of hazardous materials (2009).