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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of a heterogeneous hollow-fiber affinity membrane having a mercapto chelating resin and its recovery of Hg2+ cations
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Preparation of a heterogeneous hollow-fiber affinity membrane having a mercapto chelating resin and its recovery of Hg2+ cations

机译：具有巯基螯合树脂的异质中空纤维亲和膜的制备及其对Hg2 +阳离子的回收

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摘要

A kind of heterogeneous hollow-fiber affinity filter membrane with a high chelating capacity for Hg2+ was prepared by phase separation with blends of a mercapto chelating resin and polysulfone as the membrane materials, N,N-dimethylacetamide as the solvent, and water as the extraction solvent. The adsorption isotherms of the hollow-fiber affinity filter membrane for Hg2+ were determined. The heterogeneous hollow-fiber affinity filter membrane was used for the adsorption of Hg2+ cations through the coordination of the mercapto group and Hg2+ cations, and the effects of the morphology and structure of the affinity membrane on the chelating properties were investigated. The chelating conditions, including the chelating resin grain size, pH value, concentration of the metallic ion solution, mobile phase conditions, and operating parameters, had significant effects on the chelating capacity of the hollow-fiber affinity filter membrane. The results revealed that the greatest chelatin capacity of the hollow-fiber affinity filter membrane for Hg2+ was 1090 mu g/cm(2) of membrane under appropriate conditions, and the adsorption isotherms of Hg2+ could be described by the Langmuir isotherm. The dynamic chelating experiments indicated that the hollow-fiber affinity membrane could be operated at a high feed flow rate and that large-scale removal of Hg2+ could be realized. (C) 2007 Wiley Periodicals, Inc.
机译：以巯基螯合树脂和聚砜为膜材料，N，N-二甲基乙酰胺为溶剂，水为萃取相，通过相分离制备了一种对Hg2 +具有高螯合能力的异质中空纤维亲和滤膜。溶剂。测定中空纤维亲和滤膜对Hg2 +的吸附等温线。采用异质中空纤维亲和滤膜通过巯基和Hg2 +阳离子的配位吸附Hg2 +阳离子，研究了亲和膜的形态和结构对螯合性能的影响。螯合条件，包括螯合树脂的粒度，pH值，金属离子溶液的浓度，流动相条件和操作参数，对中空纤维亲和滤膜的螯合能力有重要影响。结果表明，在适当的条件下，中空纤维亲和滤膜对Hg2 +的最大螯合能力为1090μg/ cm（2），而Langmuir等温线可以描述Hg2 +的吸附等温线。动态螯合实验表明，中空纤维亲和膜可以高进料流量运行，并且可以实现大规模去除Hg2 +。 （C）2007 Wiley期刊公司

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