储恬然^1,2,侯大伟³

• 1:湖北大学 资源与环境学院， 湖北 武汉 430062
• 2:德国德累斯顿工业大学 土木与环境工程学院， 萨克森州 德累斯顿 01069
• 3:中国大唐集团科学技术研究总院华东电力试验研究院， 安徽 合肥 230000

摘要(Abstract)：

随着工业化的发展,愈多的新污染物(ECs)被排放到自然水体中。其中,全氟和多氟烷基化合物(PFASs)是一种特殊的人工合成物,因具有极强的稳定性、生物累积性和毒性,对人体和生态健康造成严重威胁。对此,通过在水相中引入氯化钙(CaCl₂),利用Ca²⁺与酰氯单体间的络合作用,内部调节界面聚合(IP)反应,成功制备了更薄、更粗糙、更亲水、截留分子量更小的荷负电氯化钙改性纳滤膜(CaCl₂-TFC)。分析CaCl₂质量分数对分离性能的影响,结果表明最佳CaCl₂-TFC膜纯水通量高达101.86 L·m^-2·h^-1,相比改性前提升近3.28倍,且能截留95.61%的Na₂SO₄,克服了薄膜复合(TFC)纳滤膜的权衡效应,并对全氟己酸(PFHxA)和全氟己烷磺酸(PFHxS)表现出95.78%和90.92%的截留率。研究提出了一种简易环保、低成本的TFC纳滤膜制作方式,并将其应用于PFASs的处理中,为纳滤膜在饮用水安全保护领域应用提供技术参考。

关键词(KeyWords)： 饮用水安全;纳滤膜;薄膜复合;PFASs;权衡效应

Abstract:

Keywords:

基金项目(Foundation): 中国大唐集团公司科技项目(KY-2016-05)。

作者(Author): 储恬然^1,2,侯大伟³

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