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Adsorption of chromium (VI) by ethylenediamine-modified cross-linked magnetic chitosan resin: Isotherms, kinetics and thermodynamics

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WOS被引频次:352
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成果类型:
期刊论文
作者:
Hu, Xin-jiang;Wang, Jing-song;Liu, Yun-guo;Li, Xin;Zeng, Guang-ming;Bao, Zheng-lei;Zeng, Xiao-xia;Chen, An-wei;Long, Fei
通讯作者:
Liu, Y.-G.(hnuese@126.com)
作者机构:
[Li, Xin; Hu, Xin-jiang; Liu, Yun-guo; Long, Fei; Zeng, Guang-ming; Zeng, Xiao-xia; Chen, An-wei] College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
[Li, Xin; Hu, Xin-jiang; Liu, Yun-guo; Long, Fei; Zeng, Guang-ming; Zeng, Xiao-xia; Chen, An-wei] Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
[Bao, Zheng-lei; Wang, Jing-song] School of Urban Construction, University of South China, Hengyang, Hunan 421001, China
通讯机构:
[Liu, Yun-guo] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
语种:
英文
关键词:
Adsorption capacities - Adsorption data - Adsorption process - Adsorption rates - Aqueous solutions - Batch adsorption - Chromium ions - Chromium removal - EMCMCR - Equilibrium isotherms - Ethylene diamine - Film diffusion - Intra-particle diffusion - Kinetics and thermodynamics - Langmuir models - Langmuirs - Magnetic chitosan - NaOH solutions - PH-dependent - Pseudo-second-order kinetic models - Temkin model - Thermodynamic parameter
期刊:
Journal of hazardous materials
ISSN:
0304-3894
年:
2011
卷:
185
期:
1
页码:
306-314
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:工程学;WOS学科类别:Engineering, Civil;Engineering, Environmental;Environmental Sciences
入藏号:
WOS:000289446700043;EI:20104713418894;PMID:20889258
基金类别:
National Natural Science Foundation of China [20707008, 10775065]; Hunan Provincial Education Department [068082]; Hunan University [hdzy0903]
机构署名:
本校为其他机构
院系归属:
土木工程学院
摘要:
The adsorption of chromium (VI) ions from aqueous solution by ethylenediamine-modified cross-linked magnetic chitosan resin (EMCMCR) was studied in a batch adsorption system. Chromium (VI) removal is pH dependent and the optimum adsorption was observed at pH 2.0. The adsorption rate was extremely fast and the equilibrium was established within 6-10 min. The adsorption data could be well interpreted by the Langmuir and Temkin model. The maximum adsorption capacities obtained from the Langmuir model are 51.813 mg g(-1), 48.780 mg g(-1) and 45.872 mg g(-1) at 293, 303 and 313 K, respectively. The adsorption process could be described by pseudo-second-order kinetic model. The intraparticle diffusion study revealed that film diffusion might be involved in the present case. Thermodynamic parameters revealed the feasibility, spontaneity and exothermic nature of adsorption. The sorbents were successfully regenerated using 0.1 N NaOH solutions. (C) 2010 Elsevier B.V. All rights reserved.
参考文献:
Aguilar-Carrillo J, 2006, CHEMOSPHERE, V65, P2377, DOI 10.1016/j.chemosphere.2006.04.092
Aksu Z, 2002, PROCESS BIOCHEM, V38, P89, DOI 10.1016/S0032-9592(02)00051-1
Aydin YA, 2009, CHEM ENG J, V151, P188, DOI 10.1016/j.cej.2009.02.010
Bao Z.L., 2009, 2009 INT S ENV SCI T, P1585
Basha S, 2009, CHEM ENG J, V147, P226, DOI 10.1016/j.cej.2008.07.005

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