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首页> 外文期刊>Desalination: The International Journal on the Science and Technology of Desalting and Water Purification >Purification of a diluted solution containing nickel using electrodeionization
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Purification of a diluted solution containing nickel using electrodeionization

机译：使用电去离子纯化含镍的稀释溶液

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摘要

It was found that the effective diffusion coefficient of Ni~(2+)in a macroporous strongly acidic cation-exchange resin,which was determined with the electromigration method,depends on acidity and flow rate of the solution.The values of diffusion coefficient were found to be 1.18Xl0~(-13)-1.9X10~(-12)m~2 s~(-1).Acidification of the solution prevents formation of insoluble nickel compounds on the surface of particles and membranes.At the same time an increase in flow rate(pressure drop)through the ion exchanger results in a rise of ion transport,probably due to an improvement of packing.The ion exchanger previously loaded with Ni~(2+)was tested by the electrodeionization process of nickel removal from a diluted solution.Optimal conditions for realizing the discontinuous process were determined.It was found that Ni~(2+)ions are transported both through the ion exchanger and solution.The solution purification degree reached 40%.
机译：结果发现，Ni〜（2+）在大孔强酸性阳离子交换树脂中的有效扩散系数是通过电迁移法测定的，取决于溶液的酸度和流速，得出扩散系数的值。为1.18Xl0〜（-13）-1.9X10〜（-12）m〜2 s〜（-1）。溶液的酸化可防止在颗粒和膜表面形成不溶的镍化合物。通过离子交换器的流量（压降）的增加可能导致离子传输的增加，这可能是由于填料的改进所致。之前装有Ni〜（2+）的离子交换器通过电去离子法从镍中去除镍进行了测试确定了实现不连续过程的最佳条件，发现Ni〜（2+）离子同时通过离子交换剂和溶液传输，溶液的纯化度达到40％。

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