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首页> 外文期刊>Journal of Applied Polymer Science >Study on preparation of heterogeneous polysulfone affinity filter membrane and its sorption properties for Hg2+
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Study on preparation of heterogeneous polysulfone affinity filter membrane and its sorption properties for Hg2+

机译：非均相聚砜亲和滤膜的制备及其对Hg2 +的吸附性能研究

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High quality heterogeneous polysulfone affinity flat filter membranes having chelating groups were prepared by phase separation by the use of blends of chelating resin and polysulfone as membrane materials, N,N-dimethylacetamide as the solvent, and water as the extraction solvent. The effects of blending ratio, chelating resin grain size, and temperature of casting solution on the structure of affinity membranes were investigated. The sorption process of an affinity filter membrane for Hg2+, adsorbed under various chelating conditions such as chelating resin grain size, pH value, and the concentration of the metallic ion solution, was also studied. The results revealed that the greatest chelating capacity of an affinity filter membrane for Hg2+ was 1050 mug/cm(2) per membrane under appropriate conditions, and the sorption isotherms of Hg2+ could be expressed by the Freundlich sorption model. Dynamic chelating experiments indicated that the Hg2+ could be extracted with the affinity filter membrane and reextracted under acidic conditions. (C) 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 908 -915, 2003. [References: 15]
机译：通过使用螯合树脂和聚砜的共混物作为膜材料，N，N-二甲基乙酰胺作为溶剂，水作为萃取溶剂，通过相分离制备具有螯合基团的高质量异质聚砜亲和型平滤膜。研究了共混比，螯合树脂粒径和浇铸液温度对亲和膜结构的影响。还研究了在各种螯合条件下（如螯合树脂的粒径，pH值和金属离子溶液的浓度）吸附的Hg2 +亲和滤膜的吸附过程。结果表明，在适当条件下，亲和滤膜对Hg2 +的最大螯合能力为每膜1050杯/ cm（2），并且可以用Freundlich吸附模型表示Hg2 +的吸附等温线。动态螯合实验表明，Hg2 +可以用亲和滤膜提取并在酸性条件下再萃取。 （C）2002 Wiley Periodicals，Inc. J Appl Polym Sci 87：908 -915，2003. [参考：15]

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