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Equilibrium models and kinetic for the adsorption of methylene blue on Co-hectorites
Ma, Jun1,2; Jia, Yong-Zhong1; Jing, Yan1; Sun, Jin-He1; Yao, Ying1; Wang, Xiao-Hua1
2010-03-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
Volume175Issue:1-3Pages:965-969
SubtypeArticle
AbstractThe adsorption of methylene blue (MB) onto the surface of cobalt doping hectorite (Co-hectorite) was systematically studied. The physical properties of Co-hectorites were investigated, where characterizations were carried out by X-ray diffraction (XRD) and Electron Diffraction Spectrum (EDS) techniques, and morphology was examined by nitrogen adsorption. The sample with a Co content 5% (m/m) had a higher specific Surface area than other Co-hectorites. The pore diameters were distributed between 2.5 and 5.0 nm. The adsorption results revealed that Co-hectorite surfaces possessed effective interactions with MB and bases. and greatest adsorption capacity achieved with Co content 5%, where the best-fit isotherm model was the Langmuir adsorption model. Kinetic studies were fitted to the pseudo-second-order kinetic model. The intraparticle diffusion was not the rate-limiting step for the whole reaction. (C) 2009 Elsevier B.V. All rights reserved.
KeywordCo-hectorite Mechanism Kinetics Adsorption
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
WOS KeywordACID DYE
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS IDWOS:000274490400122
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5958
Collection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
Affiliation1.Chinese Acad Sci, Inst Salt Lakes, Xining 810008, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100086, Peoples R China
Recommended Citation
GB/T 7714
Ma, Jun,Jia, Yong-Zhong,Jing, Yan,et al. Equilibrium models and kinetic for the adsorption of methylene blue on Co-hectorites[J]. JOURNAL OF HAZARDOUS MATERIALS,2010,175(1-3):965-969.
APA Ma, Jun,Jia, Yong-Zhong,Jing, Yan,Sun, Jin-He,Yao, Ying,&Wang, Xiao-Hua.(2010).Equilibrium models and kinetic for the adsorption of methylene blue on Co-hectorites.JOURNAL OF HAZARDOUS MATERIALS,175(1-3),965-969.
MLA Ma, Jun,et al."Equilibrium models and kinetic for the adsorption of methylene blue on Co-hectorites".JOURNAL OF HAZARDOUS MATERIALS 175.1-3(2010):965-969.
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