Role of calcium ions on the removal of haloacetic acids from swimming pool water by nanofiltration: mechanisms and implications

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• 作者：Linyan Yang^a ; ^b ; Jin Zhou^c ; ^d ; Qianhong She^e ; Man Pun Wan^f ; Rong Wang^c ; ^e ; Victor W.-C. Chang^b ; ^c ; ^{wcchang@ntu.edu.sg} ; Chuyang Y. Tang^g ; ^tangc@hku.hk
• 关键词：Haloacetic acids ; Membranes ; Matrix effect ; Calcium ; Swimming pool water
• 刊名：Water Research
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：110
• 期：Complete
• 页码：332-341
• 全文大小：1775 K
• 卷排序：110

文摘

The effect of swimming pool matrix (particularly Ca2+) on membrane rejection is significant. HAA rejection by NF270 was decreased in the presence of Ca2+ at pH 7.5. Ca2+ is unable to form strong complex with HAAs under pool conditions. The presence of Ca2+ does not significantly affect membrane pore sizes. Formation of membrane-Ca2+ complex weakens charge effect and reduces HAA rejection.