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首页> 外文期刊>Journal of Applied Polymer Science >Separation of humic acid with nanofiltration polyamide composite membranes
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Separation of humic acid with nanofiltration polyamide composite membranes

机译：纳滤聚酰胺复合膜分离腐殖酸

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摘要

Humic acid, a natural organic matter, was separated with a polyamide (PA) composite membrane with a molecular weight cutoff (MWCO) of 500 g/mol. The PA composite membrane was prepared by the interfacial polymerization of piperazine and trimesoyl chloride on a polysulfone support with an MWCO of about 30,000 g/mol. The separation conditions through the membrane were varied, and factors affecting the permeation performance of the membranes, such as the concentration, pH, and storage time of the humic acid solutions, were studied. The surface chemistry of the membrane changed dynamically as a function of the operating time during the permeation tests, and the size and zeta potential of the colloid of humic acid solutions under different conditions were characterized with a zeta potentiometer. (C) 2002 Wiley Periodicals, Inc. [References: 8]
机译：腐殖酸是一种天然有机物，用截留分子量（MWCO）为500 g / mol的聚酰胺（PA）复合膜分离。通过在约30,000 g / mol MWCO的聚砜载体上通过哌嗪和偏苯三酰氯的界面聚合制备PA复合膜。改变了通过膜的分离条件，并且研究了影响膜的渗透性能的因素，例如腐殖酸溶液的浓度，pH和储存时间。在渗透测试中，膜的表面化学性质随操作时间的变化而动态变化，并且使用zeta电位计表征了在不同条件下腐殖酸溶液胶体的大小和zeta电位。 （C）2002 Wiley Periodicals，Inc. [参考：8]

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