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	Sorption of perfluorooctane sulfonate and perfluorooctanoate on activated carbons and resin: Kinetic and isotherm study
	Yu, Qiang ; Zhang, Ruiqi ; Deng, Shubo ; Huang, Jun ; Yu, Gang
	2010-10-12 ; 2010-10-12
关键词	PFOS PFOA Activated carbon Anion-exchange resin Sorption kinetics Sorption isotherm LIQUID-PHASE ADSORPTION PERFLUORINATED SURFACTANTS AQUEOUS-SOLUTION REVERSE-OSMOSIS REACTIVE DYES WASTE-WATER REMOVAL CHITOSAN PFOA DEFLUORINATION Engineering, Environmental Environmental Sciences Water Resources
中文摘要	Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) have increasingly attracted global concerns in recent years due to their global distribution, persistence, strong bioaccumulation and potential toxicity. The feasibility of using powder activated carbon (PAC), granular activated carbon (GAC) and anion-exchange resin (AI400) to remove PFOS and PFOA from water was investigated with regard to their sorption kinetics and isotherms. Sorption kinetic results show that the adsorbent size influenced greatly the sorption velocity, and both the GAC and AI400 required over 168 h to achieve the equilibrium, much longer than 4 h for the PAC. Two kinetic models were adopted to describe the experimental data, and the pseudo-second-order model well described the sorption of PFOS and PFOA on the three adsorbents. The sorption isotherms show that the GAC had the lowest sorption capacity both for PFOS and PFOA among the three adsorbents, while the PAC and AI400 possessed the highest sorption capacity of 1.04 mmol g(-1) for PFOS and 2.92 mmol g(-1) for PFOA according to the Langmuir fitting. Based on the sorption behaviors and the characteristics of the adsorbents and adsorbates, ion exchange and electrostatic interaction as well as hydrophobic interaction were deduced to be involved in the sorption, and some hemi-micelles and micelles possibly formed in the intraparticle pores. (C) 2008 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79631]
专题	清华大学
推荐引用方式 GB/T 7714	Yu, Qiang,Zhang, Ruiqi,Deng, Shubo,et al. Sorption of perfluorooctane sulfonate and perfluorooctanoate on activated carbons and resin: Kinetic and isotherm study[J],2010, 2010.
APA	Yu, Qiang,Zhang, Ruiqi,Deng, Shubo,Huang, Jun,&Yu, Gang.(2010).Sorption of perfluorooctane sulfonate and perfluorooctanoate on activated carbons and resin: Kinetic and isotherm study..
MLA	Yu, Qiang,et al."Sorption of perfluorooctane sulfonate and perfluorooctanoate on activated carbons and resin: Kinetic and isotherm study".(2010).

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