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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
发表期刊COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷号342期号:1-3页码:76-83
文章类型Article
摘要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.
关键词Rubidium Cesium Adsorption Ammonium Molybdophosphate Composite Adsorbent Adsorption Kinetics
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]EXCHANGER ; CHLORIDE ; EQUILIBRIUM ; SORPTION ; REMOVAL ; SILICA ; WATER ; ACID ; SEDIMENTS ; BEHAVIOR
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000267095500012
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/5883
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
盐湖资源与化学实验室
科研管理、支撑部门
作者单位1.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
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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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