Rubidium and cesium ion adsorption by an ammoniummolybdophosphate-calcium alginate composite adsorbent
文献类型：期刊论文
| 作者 | Li, Wu ; Li, Quan; Liu, Haining; Qing, Binju; Ye, Xiushen; Wu, Zhijian; Go, Fei; Guo, Min
|
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2009 |
| 卷号 | 342期号:1-3页码:76-83 |
| 关键词 | Rubidium Cesium Adsorption Ammonium molybdophosphate Composite |
| ISSN号 | 0927-7757 |
| 语种 | 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. 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. |
| 公开日期 | 2013-10-07 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/2103]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 青海盐湖研究所_盐湖资源与化学实验室 青海盐湖研究所_管理部门 |
| 推荐引用方式 GB/T 7714 | Li, Wu,Li, Quan,Liu, Haining,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 | Li, Wu.,Li, Quan.,Liu, Haining.,Qing, Binju.,Ye, Xiushen.,...&Guo, Min.(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 | Li, Wu,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. |
入库方式： OAI收割
来源：青海盐湖研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。