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题名: Iodide Adsorption onto Three Organic-Inorganic Composite Adsorbents
作者: Zhang, Huifang ;  Guo, Tan ;  李权 ;  刘海宁 ;  叶秀深 ;  吴志坚
刊名: ADSORPTION SCIENCE & TECHNOLOGY
出版日期: 2012
卷号: 30, 期号:5, 页码:449-460
英文摘要: Composite adsorbents, Ca(ALG)(2)-Cu2O, Ca(ALG)(2)-AgCl and Ca(ALG)(2)-Ag, were prepared using Cu2O, AgCl and Ag as the adsorption-active components and calcium alginate as the matrix material. The adsorption of iodide from aqueous solutions onto these adsorbents was investigated as a function of initial solution pH, temperature and co-existing NaCl. The loading of the adsorption-active components in the composite adsorbents is much higher than that in the reported composite adsorbents. In neutral solutions, the equilibrium adsorption amount follows the order of Ca(ALG)(2)-AgCl >> Ca(ALG)(2)-Ag >> Ca(ALG)(2)-Cu2O. The adsorption by Ca(ALG)(2)-AgCl is insensitive to pH, while the adsorption by Ca(ALG)(2)-Cu2O and Ca(ALG)(2)-Ag is pH dependent. The effect of temperature on the adsorption is more pronounced for Ca(ALG)(2)-Cu2O than for Ca(ALG)(2)-AgCl and Ca(ALG)(2)-Ag. The co-existing NaCl does not affect the adsorption by Ca(ALG)(2)-AgCl very much; however, it suppresses the adsorption by Ca(ALG)(2)-Ag, and especially, Ca(ALG)(2)-Cu2O. Chemical adsorption is the main mechanism for all the three adsorbents. Ca(ALG)(2)-AgCl was found to be the best adsorbent owing to its highest adsorption capacity, suitable adsorption rate and insensitivity to solution pH, temperature and co-existing NaCl. Composite adsorbents, Ca(ALG)(2)-Cu2O, Ca(ALG)(2)-AgCl and Ca(ALG)(2)-Ag, were prepared using Cu2O, AgCl and Ag as the adsorption-active components and calcium alginate as the matrix material. The adsorption of iodide from aqueous solutions onto these adsorbents was investigated as a function of initial solution pH, temperature and co-existing NaCl. The loading of the adsorption-active components in the composite adsorbents is much higher than that in the reported composite adsorbents. In neutral solutions, the equilibrium adsorption amount follows the order of Ca(ALG)(2)-AgCl >> Ca(ALG)(2)-Ag >> Ca(ALG)(2)-Cu2O. The adsorption by Ca(ALG)(2)-AgCl is insensitive to pH, while the adsorption by Ca(ALG)(2)-Cu2O and Ca(ALG)(2)-Ag is pH dependent. The effect of temperature on the adsorption is more pronounced for Ca(ALG)(2)-Cu2O than for Ca(ALG)(2)-AgCl and Ca(ALG)(2)-Ag. The co-existing NaCl does not affect the adsorption by Ca(ALG)(2)-AgCl very much; however, it suppresses the adsorption by Ca(ALG)(2)-Ag, and especially, Ca(ALG)(2)-Cu2O. Chemical adsorption is the main mechanism for all the three adsorbents. Ca(ALG)(2)-AgCl was found to be the best adsorbent owing to its highest adsorption capacity, suitable adsorption rate and insensitivity to solution pH, temperature and co-existing NaCl.
收录类别: SCI
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2079
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Zhang, Huifang,Guo, Tan,Li, Quan,et al. Iodide Adsorption onto Three Organic-Inorganic Composite Adsorbents[J]. ADSORPTION SCIENCE & TECHNOLOGY,2012,30(5):449-460.
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