ISL OpenIR  > 青海盐湖研究所知识仓储
Rubidium and cesium ion adsorption by an ammoniummolybdophosphate-calcium alginate composite adsorbent
Ye, Xiushen; Wu, Zhijian; Li, Wu; Liu, Haining; Li, Quan; Qing, Binju; Guo, Min; Go, Fei
2009
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN0927-7757
Volume342Issue:1-3Pages:76-83
Contribution RankSCI
KeywordRubidium Cesium Adsorption Ammonium Molybdophosphate Composite
LanguageA composite spherical adsorbent was prepared with ammonium molybdophosphate (AMP), sodium alginate (NaALG), and calcium chloride. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to characterize the composite adsorbent. The adsorption of rubidium and cesium ions onto the composite adsorbent in aqueous solutions was investigated comprehensively by varying the initial metal ion concentration, pH, ionic strength, and temperature. The adsorption kinetics of both rubidium and cesium was described by the first-order and second-order kinetic models. The second-order rate constant and the initial adsorption rate increase with increasing temperature. In general, the equilibrium adsorption amount of both rubidium and cesium increases with the increase in initial metal ion concentration, but decreases with increasing ionic strength and temperature. Maximum adsorption of rubidium and cesium Occurs in the solution with an equilibrium pH Value of 3.5-4.5. Under similar conditions, cesium shows a higher adsorption amount than rubidium. The composite adsorbent is easy to prepare and highly porous. It has a fast adsorption rate and ail adsorption capacity of 0.58 and 0.69 mmol g(-1) for rubidium and cesium, respectively. The composite adsorbent is effective for the adsorption of rubidium or cesium ions from Solutions containing some other alkali metal ions, Such as sodium ions. (c) 2009 Elsevier B.V. All rights reserved. A composite spherical adsorbent was prepared with ammonium molybdophosphate (AMP), sodium alginate (NaALG), and calcium chloride. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to characterize the composite adsorbent. The adsorption of rubidium and cesium ions onto the composite adsorbent in aqueous solutions was investigated comprehensively by varying the initial metal ion concentration, pH, ionic strength, and temperature. The adsorption kinetics of both rubidium and cesium was described by the first-order and second-order kinetic models. The second-order rate constant and the initial adsorption rate increase with increasing temperature. In general, the equilibrium adsorption amount of both rubidium and cesium increases with the increase in initial metal ion concentration, but decreases with increasing ionic strength and temperature. Maximum adsorption of rubidium and cesium Occurs in the solution with an equilibrium pH Value of 3.5-4.5. Under similar conditions, cesium shows a higher adsorption amount than rubidium. The composite adsorbent is easy to prepare and highly porous. It has a fast adsorption rate and ail adsorption capacity of 0.58 and 0.69 mmol g(-1) for rubidium and cesium, respectively. The composite adsorbent is effective for the adsorption of rubidium or cesium ions from Solutions containing some other alkali metal ions, Such as sodium ions. (c) 2009 Elsevier B.V. All rights reserved.
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/2103
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
科研管理、支撑部门
Recommended Citation
GB/T 7714
Ye, Xiushen,Wu, Zhijian,Li, Wu,et al. Rubidium and cesium ion adsorption by an ammoniummolybdophosphate-calcium alginate composite adsorbent[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2009,342(1-3):76-83.
APA Ye, Xiushen.,Wu, Zhijian.,Li, Wu.,Liu, Haining.,Li, Quan.,...&Go, Fei.(2009).Rubidium and cesium ion adsorption by an ammoniummolybdophosphate-calcium alginate composite adsorbent.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,342(1-3),76-83.
MLA Ye, Xiushen,et al."Rubidium and cesium ion adsorption by an ammoniummolybdophosphate-calcium alginate composite adsorbent".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 342.1-3(2009):76-83.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ye, Xiushen]'s Articles
[Wu, Zhijian]'s Articles
[Li, Wu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ye, Xiushen]'s Articles
[Wu, Zhijian]'s Articles
[Li, Wu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ye, Xiushen]'s Articles
[Wu, Zhijian]'s Articles
[Li, Wu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.