Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
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Research Frontiers of Resources and Environment of Seawater
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The 75th Annual Meeting
Report on the 22nd Student Meeting
Preface
Special Issue : Research Frontiers of Resources and Environment of Seawater
Introduction
Commentary
Review
  • Development of Novel Nanofiltration Membranes for Separating Mg2＋ and Ca2＋ from Effluent in Electrodialysis
    Kazuki AKAMATSU, Takuji SHINTANI
    2024 Volume 78 Issue 3 Pages 168-173
    Published: September 01, 2024
    Released on J-STAGE: March 04, 2025
    DOIhttps://doi.org/10.11457/swsj.78.3_168
    JOURNAL FREE ACCESS
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    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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Commentary
Relay Essay (60)
Young Researcher's Voice (11)
Letter from Research Committees
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