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Adsorption of iodide ions on a calcium alginate-silver chloride composite adsorbent
Zhang, Huifang1,2; Gao, Xiaolei1,2; Guo, Tan1,2; Li, Quan1; Liu, Haining1; Ye, Xiushen1; Guo, Min1,2; Wu, Zhijian1
2011-08-05
发表期刊COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷号386期号:1-3页码:166-171
文章类型Article
摘要A composite spherical adsorbent for iodide ions was prepared with silver chloride as an adsorption active component, and calcium alginate as a carrier. The adsorbent had an adsorption active component content of 0.96 mmol g(-1), a water content of 83%, and a point of zero charge (PZC) of 7.2. The kinetics and thermodynamics of iodide adsorption onto the adsorbent in aqueous solutions were investigated comprehensively, by considering the effects of initial iodide concentration, temperature, solution pH, and coexisting NaCl. The results exhibited that the initial adsorption rate increases with the increase in initial iodide concentration and temperature. In general, the equilibrium adsorption amount was found to be insensitive to coexisting NaCl, and initial solution pH in a range of 1-6. The dominant adsorption mechanism has been proved to be the precipitation transformation reaction. The composite adsorbent used in this study is easy to prepare, avoiding silver chloride from leaching, and has been proved to be an effective iodide adsorbent with an adsorption capacity of 1.1 mmol g(-1). (C) 2011 Elsevier B.V. All rights reserved.
关键词Iodide Adsorption Silver Chloride Calcium Alginate Precipitation Transformation
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]IMPREGNATED ACTIVATED CARBON ; AQUEOUS-SOLUTION ; SORPTION ; REMOVAL ; WATER ; SEQUESTRATION ; EXTRACTION ; MECHANISM ; ANIONS ; OXIDES
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:000295150100022
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/5968
专题青海盐湖研究所知识仓储
盐湖资源与化学实验室
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
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GB/T 7714
Zhang, Huifang,Gao, Xiaolei,Guo, Tan,et al. Adsorption of iodide ions on a calcium alginate-silver chloride composite adsorbent[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2011,386(1-3):166-171.
APA Zhang, Huifang.,Gao, Xiaolei.,Guo, Tan.,Li, Quan.,Liu, Haining.,...&Wu, Zhijian.(2011).Adsorption of iodide ions on a calcium alginate-silver chloride composite adsorbent.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,386(1-3),166-171.
MLA Zhang, Huifang,et al."Adsorption of iodide ions on a calcium alginate-silver chloride composite adsorbent".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 386.1-3(2011):166-171.
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