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Rubidium and cesium ion adsorption by an ammonium molybdophosphate-calcium alginate composite adsorbent
Ye, Xiushen1,2; Wu, Zhijian1,3; Li, Wu1; Liu, Haining1,2; Li, Quan1; Qing, Binju1,2; Guo, Min1,2; Go, Fei1,2
2009-06-15
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume342Issue:1-3Pages:76-83
SubtypeArticle
AbstractA 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.
KeywordRubidium Cesium Adsorption Ammonium Molybdophosphate Composite Adsorbent Adsorption Kinetics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordEXCHANGER ; CHLORIDE ; EQUILIBRIUM ; SORPTION ; REMOVAL ; SILICA ; WATER ; ACID ; SEDIMENTS ; BEHAVIOR
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000267095500012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5883
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
盐湖资源与化学实验室
科研管理、支撑部门
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Huaqiao Univ, Coll Mat Sci & Engn, Key Lab Funct Mat Fujian Higher Educ, Quanzhou 362021, Peoples R China
Recommended Citation
GB/T 7714
Ye, Xiushen,Wu, Zhijian,Li, Wu,et al. Rubidium and cesium ion adsorption by an ammonium molybdophosphate-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 ammonium molybdophosphate-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 ammonium molybdophosphate-calcium alginate composite adsorbent".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 342.1-3(2009):76-83.
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