RO membrane with a surface tethered polymer brush layer for enhanced rejection of nitrate, boron, and arsenic

IF 4.9 Q1 ENGINEERING, CHEMICAL

Journal of Membrane Science Letters Pub Date : 2023-09-09 DOI:10.1016/j.memlet.2023.100062

Yian Chen , Yoram Cohen

引用次数: 0

Abstract

Thin-film composite (TFC) polyamide (PA) RO membrane modified with a layer of tethered poly(acrylic acid) (PAA) chains displayed intrinsic rejections of nitrate, boron, As(III), and As(V) of 98.0%, 90.7%, 96%, and 99.6%, respectively. The solute permeability coefficients for nitrate, boron, As(III), and As(V) by the SNS-PAA-PA membrane were lower by 31–38%, 49–63%, 57–72% and 87–93% relative to tested commercial membranes. The above results indicate that the SNS-PAA-PA membrane should be suitable for purification of brackish source water contaminated with nitrate, boron, As(III), and As(V) to levels 1219 ppm, 2 ppm, 95 ppb, and 948 ppb, respectively. The study results suggest that there is merit in further exploration of the potential of the present approach for enhancing RO membranes performance for targeted solute removal.

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具有表面系留聚合物刷层的反渗透膜，可增强对硝酸盐、硼和砷的去除

用一层束缚的聚丙烯酸（PAA）链修饰的薄膜复合材料（TFC）聚酰胺（PA）反渗透膜对硝酸盐、硼、As（III）和As（V）的固有截留率分别为98.0%、90.7%、96%和99.6%。与测试的商业膜相比，SNS-PAA-PA膜对硝酸盐、硼、As（III）和As（V）的溶质渗透系数分别降低了31–38%、49–63%、57–72%和87–93%。上述结果表明，SNS-PAA-PA膜应适用于将被硝酸盐、硼、As（III）和As（V）污染的微咸水分别净化至1219ppm、2ppm、95ppb和948ppb的水平。研究结果表明，进一步探索本方法提高反渗透膜靶向溶质去除性能的潜力是有价值的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Membrane Science Letters

CiteScore

4.00

自引率

0.00%

发文量