Kinetics and thermodynamics of methylene blue adsorption by cobalt-hectorite composite

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	Kinetics and thermodynamics of methylene blue adsorption by cobalt-hectorite composite
	Ma, Jun; Jia, Yongzhong; Jing, Yan; Yao, Ying; Sun, Jinhe
	2012-04-01
发表期刊	DYES AND PIGMENTS
卷号	93 期号:1-3 页码:1441-1446
关键词	Kinetics Thermodynamics Adsorption Methylene Blue Composite
摘要	The cobalt-hectorite composite is used for the removal of MB from aqueous solution. Research concerning the effects of pH, composite dose, initial dye concentration and temperature are presented and discussed. Experiment data was analyzed using pseudo-second-order kinetics, intra-particle diffusion, and film diffusion. The characteristic parameters for each model have been determined. Thermodynamic parameters such as activation (E-a), standard free energy (Delta G degrees), the enthalpy (Delta H degrees) and the entropy (Delta S degrees) were also evaluated. The negative value of Delta G degrees (kJ/mol) and Delta H degrees (kJ/mol) indicates the spontaneous and exothermic nature of the reactions. The data of E-a shows the physisorption process of MB adsorption on Co-hectorite composite. (C) 2011 Elsevier Ltd. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5634
专题	青海盐湖研究所知识仓储盐湖资源综合利用工程技术中心
作者单位	Chinese Acad Sci, Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jun,Jia, Yongzhong,Jing, Yan,et al. Kinetics and thermodynamics of methylene blue adsorption by cobalt-hectorite composite[J]. DYES AND PIGMENTS,2012,93(1-3):1441-1446.
APA	Ma, Jun,Jia, Yongzhong,Jing, Yan,Yao, Ying,&Sun, Jinhe.(2012).Kinetics and thermodynamics of methylene blue adsorption by cobalt-hectorite composite.DYES AND PIGMENTS,93(1-3),1441-1446.
MLA	Ma, Jun,et al."Kinetics and thermodynamics of methylene blue adsorption by cobalt-hectorite composite".DYES AND PIGMENTS 93.1-3(2012):1441-1446.