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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
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume386Issue:1-3Pages:166-171
SubtypeArticle
AbstractA 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.
KeywordIodide Adsorption Silver Chloride Calcium Alginate Precipitation Transformation
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordIMPREGNATED ACTIVATED CARBON ; AQUEOUS-SOLUTION ; SORPTION ; REMOVAL ; WATER ; SEQUESTRATION ; EXTRACTION ; MECHANISM ; ANIONS ; OXIDES
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000295150100022
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5968
Collection青海盐湖研究所知识仓储
盐湖资源与化学实验室
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
Recommended Citation
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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