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环境化学  2015 

水溶液重金属离子在蛭石上的动态吸附行为与化学势变

Keywords: 动态吸附,化学势变,Pb2+,Cd2+,Zn2+,蛭石,重金属离子

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Abstract:

测试了蛭石-水溶液体系中Pb2+、Cd2+、Zn2+离子的等温动态吸附曲线.实验结果表明蛭石具有较强的去除水溶液中Pb2+、Cd2+、Zn2+离子的能力.基于等温条件下物理化学反应组分的标准化学势为常数的原理,建立了反应体系的动态化学势变方程,为分析离子吸附机理和发展离子吸附技术提供了理论依据与实用方法.测试离子化学势的动态变化证明离子吸附反应遵循电化学势作用定律.

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