國立台灣科技大學-專利商品網-專利技術-pH-driven nonsolvent-induced phase separation (NIPS) membrane for nanofiltration

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技術名稱 Technology

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發明人 Inventor

郭歐文, 鍾台生, 黃岳翰, 阿布迪, 古德塔.澤拉萊姆,

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所有權人 Asignee

國立臺灣科技大學

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專利國家 Country	申請號 Application No.	專利號 Patent No.	中心案號 Serial No.
中華民國	112105110	申請中	1110057TW0

點閱數：92

技術摘要：

Integrally skinned asymmetric flat-sheet imidazole-based membranes were fabricated using the nonsolvent-induced phase separation (NIPS) method under various pH in a coagulant bath. The effects of acidity and alkalinity of the nonsolvent during the phase inversion process on membrane formation and NF performance were systematically investigated. The membrane formed under pH 12 and modified through the surface coating method has a molecular weight cut-off (MWCO) as low as 288 Da and an MgCl2 rejection of more than 97%. The membrane also displays pH-responsive characteristics for salt separation with unequal valence ratios of co-ions and counter-ions. It is able to show a competitive S(Li, Mg) value for Li+/Mg2+ separation surpassing the state-of-the-art performance of commercial membranes.

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