日本海水学会誌
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
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海水資源・環境研究の最前線
選択された号の論文の11件中1~11を表示しています
2024年度日本海水学会第75年会を終えて
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特集「海水資源・環境研究の最前線」
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  • 赤松 憲樹, 新谷 卓司
    2024 年 78 巻 3 号 p. 168-173
    発行日: 2024/09/01
    公開日: 2025/03/04
    ジャーナル フリー
    This mini-review introduces an idea for a membrane-based recovery process of Mg2+ and Ca2+ from effluents after electrodialysis and our progress on developing novel negatively-charged and positively-charged nanofiltration (NF) membranes to be used for this purpose. As for the negatively-charged NF membranes, it was demonstrated that the incorporation of iminodiacetic acid (IDA) with piperazine (PIP) to form the polyamide layers by the interfacial polymerization with trimesoyl chloride (TMC) was promising for the separation of SO42- from Mg2+ and Ca2+. As for the positively-charged NF membranes, it was demonstrated that the modification of the piperazine-amide layer with poly ([2-methacryloyloxyethyl] trimethylammonium chloride) via plasma graft polymerization was promising for the separation of Mg2+ and Ca2+ from Na. Finally, an example for concentrating Mg2+ with the NF membranes was successfully demonstrated. These achievements will lead to bench-scale and pilot-scale tests in the near future.
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