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Radiation-induced graft polymerization for the preparation of a highly efficient UHMWPE fibrous adsorbent for Cr(VI) removal
Gao, QH; Hua, JT; Li, R; Xing, Z; Pang, LJ; Zhang, MX; Xu, L; Wu, GZ
2017
Source PublicationRADIATION PHYSICS AND CHEMISTRY
ISSN0969-806X
Volume130Pages:92-102
Subtype期刊论文
AbstractA 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.
KeywordUhmwpe Fiber Radiation-induced Graft Polymerization Cr(Vi) Adsorption Reusable Fibrous Adsorbent
DOI10.1016/j.radphyschem.2016.08.004
Indexed BySCI
Language英语
WOS IDWOS:000388777200015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27428
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
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,2017,130:92-102.
APA Gao, QH.,Hua, JT.,Li, R.,Xing, Z.,Pang, LJ.,...&Wu, GZ.(2017).Radiation-induced graft polymerization for the preparation of a highly efficient UHMWPE fibrous adsorbent for Cr(VI) removal.RADIATION PHYSICS AND CHEMISTRY,130,92-102.
MLA Gao, QH,et al."Radiation-induced graft polymerization for the preparation of a highly efficient UHMWPE fibrous adsorbent for Cr(VI) removal".RADIATION PHYSICS AND CHEMISTRY 130(2017):92-102.
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