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CAS OpenIR  > 中科院上海应用物理研究所2011-2017年  > 期刊论文
题名:
Radiation-induced graft polymerization for the preparation of a highly efficient UHMWPE fibrous adsorbent for Cr(VI) removal
作者: Gao, QH; Hua, JT; Li, R; Xing, Z; Pang, LJ; Zhang, MX; Xu, L; Wu, GZ
刊名: RADIATION PHYSICS AND CHEMISTRY
出版日期: 2017
卷号: 130, 页码:92-102
关键词: UHMWPE fiber ; Radiation-induced graft polymerization ; Cr(VI) adsorption ; Reusable fibrous adsorbent
DOI: 10.1016/j.radphyschem.2016.08.004
文章类型: 期刊论文
英文摘要: A novel fibrous adsorbent containing amine and quaternary ammonium groups was prepared by radiation-induced graft of glycidyl methacrylate (GMA) onto ultra-high molecular weight polyethylene (UHMWPE) fiber and further modifying with triethylenetetramine (TETA) and glycidyl trimethylammonium chloride (GTA). The ATR-IR spectra and SEM observation demonstrated that amine and quaternary ammonium groups were immobilized onto the surface of UHMWPE fiber. The principal factors affecting the adsorption of Cr(VI) ions have been investigated including pH of the aqueous solution, contact time, temperature and coexisting anions. This novel fibrous adsorbent could effectively adsorb Cr(VI) in the range of pH 1-9, and the maximum adsorption capacity reached 295 mg/g at pH 3 and 25 degrees C based on the Langmuir isotherm. It was found that adsorption equilibrium could be achieved within 2 h for initial Cr(VI) of 100 mg/L, following the pseudo-second order model. The effect of coexisting anions (including SO42-, H2PO4-, NO3- and Cl-) on the uptake of Cr(VI) was investigated in detail. Additionally, the adsorption saturated fiber could be regenerated by soaking in 0.5 mol/L NaOH solution, and the adsorption performance of this adsorbent could be maintained at 90% after eight cycles of adsorption-desorption. ATR-IR and XPS analysis revealed that Cr(VI) ions were adsorbed on the fiber adsorbent through ion exchange mechanism. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000388777200015
ISSN号: 0969-806X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27428
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Gao, QH,Hua, JT,Li, R,et al. Radiation-induced graft polymerization for the preparation of a highly efficient UHMWPE fibrous adsorbent for Cr(VI) removal[J]. RADIATION PHYSICS AND CHEMISTRY,2017-01-01,130:92-102.
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