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蛭石吸附及解吸锌离子特性研究
引用本文:连亚欣,李科林,肖剑波,汤斌,高飞.蛭石吸附及解吸锌离子特性研究[J].环境科学与管理,2009,34(8):65-68.
作者姓名:连亚欣  李科林  肖剑波  汤斌  高飞
作者单位:中南林业科技大学,资源与环境学院,湖南,长沙,410004
基金项目:本项目研究得到湖南省重点学科环境科学学科建设基金支持 
摘    要:用蛭石对锌离子的吸附解吸进行了实验研究,初步探讨了其对锌离子吸附解吸的机理。研究结果表明:蛭石对Zn^2+具有较强的吸附能力,吸附在8h左右接近平衡。随着锌离子浓度的增加,蛭石的吸附量也在逐渐增加,当锌离子浓度达到400mg/L时,吸附量趋于平稳。在完成吸附实验的基础上,分别采用过滤和取上清液的方法解吸,实验证明静置平衡后,取出上清液50ml,再加入50ml解吸剂的方法解吸效果较好;解吸时间在0h到12h,蛭石的解吸量呈现递增的趋势,且达到1.070mg/g;在12h到48h内,解吸量基本没有增加,其中在24h时达到最大解吸量1.074mg/g。不同的解吸剂对蛭石解吸锌离子影响效果不同:蒸馏水不能使锌离子解吸;K^+的影响作用相对于Na^+更明显,随着两种阳离子浓度的增加,蛭石的解吸量逐渐增加。

关 键 词:蛭石  锌离子  吸附  解吸

Study on Adsorption and Desorption Properties of Vermiculite to Zinc
Lian Yaxin,Li Kelin,Xiao Jianbo,Tang Bin,Gao Fei.Study on Adsorption and Desorption Properties of Vermiculite to Zinc[J].Environmental Science and Management,2009,34(8):65-68.
Authors:Lian Yaxin  Li Kelin  Xiao Jianbo  Tang Bin  Gao Fei
Institution:Lian Yaxin,Li Kelin,Xiao Jianbo,Tang Bin,Gao Fei(College of Resource , Environment,Central South University of Forestry , Technology,Changsha 410004,China)
Abstract:With vermiculite to the zinc ions adsorption and desorption were studied,and adsorption mechanism of vermiculite had been preliminarily studied with its structure in the paper.The results showed that vermiculite to zinc ions have a strong absorption capacity and it was close to balance with about 8 h.With the increase of the concentration of zinc ions,adsorption of vermiculite was also gradually increase,when the concentration of zinc ions was 400 mg/L,the absorption capacity had stabilized.On the basis of ...
Keywords:vermiculite  zinc ions  adsorption  desorption  
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