山核桃壳对低温水环境中铜离子的吸附效果Biosorption of Cu(Ⅱ) onto Chinese walnut shell in low temperature:Equilibrium studies
于春光;杜茂安;雒江菡;孟召辉;查金苗;
摘要(Abstract):
为了研究利用山核桃壳作为生物吸附剂去除水溶液中的Cu(Ⅱ)离子,探讨了不同条件溶液pH、吸附时间、Cu(Ⅱ)初始质量浓度对吸附效率的影响。实验结果表明:山核桃壳对Cu(Ⅱ)离子吸附率在pH为5.0的时候为可达到最大90.44%;随着初始Cu(Ⅱ)质量浓度的增加吸附率逐渐减小;FTIR显示山核桃壳的一些化学基团与吸附Cu(Ⅱ)离子有关;山核桃壳对Cu(Ⅱ)离子的吸附过程与Langmuir和Freundlich吸附等温线相关性较高。山核桃壳是一种很有前景去除水中Cu(Ⅱ)离子的生物吸附剂。
关键词(KeyWords): 生物吸附;山核桃壳;Cu(Ⅱ);吸附等温线;FTIR;水溶液;吸附效率;低温
基金项目(Foundation): 国家重大水专项基金资助项目(2008ZX07211-007)
作者(Authors): 于春光;杜茂安;雒江菡;孟召辉;查金苗;
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