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Development of next generation membrane for potable water reuse

Research Project

Project/Area Number 18H01572
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionNagasaki University

Principal Investigator

FUJIOKA Takahiro  長崎大学, 工学研究科, 准教授 (20759691)

Co-Investigator(Kenkyū-buntansha) 児玉谷 仁  鹿児島大学, 理工学域理学系, 准教授 (30434468)
新谷 卓司  神戸大学, 科学技術イノベーション研究科, 特命教授 (90607574)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords再生水 / 逆浸透膜 / 飲用再利用 / 微量化学物質 / ニトロソジメチルアミン / 微量物質
Outline of Final Research Achievements

This project aimed to achieve high rejection of N-nitrosodimethylamine (NDMA) by modifying commercial reverse osmosis (RO) membranes. This project first assessed the transport of N-nitrosamines through RO membranes by decoding the role of molecular size and nitrogen atoms, and we identified the size exclusion mechanism governs the rejection of NDMA by RO membranes. Second, this project systematically assessed the effect of heat modification conditions on the rejection of NDMA, and achieve an NDMA removal of 80% by a heat-treated RO membrane. Similarly, this project achieved high rejection (80%) of NDMA by plugging the nanopores in an RO membrane with a linear-chain amine.

Academic Significance and Societal Importance of the Research Achievements

将来、日本にも飲用再利用導入が必要になる可能性を否定できない中、本研究を通して世界トップの阻止性能を持つ逆浸透膜を生み出すことで世界の水処理分野に日本の科学技術力と存在感を示す意義は大きい。人工膜を使った膜分離では常に溶質の膜透過が存在しており、本研究成果はこれら人工膜全般の膜透過現象の解明、膜材料設計、製膜条件制御といった学術領域で大きく役立つことが期待される。さらに、これらを通して発展した膜分離技術は、人工膜が製造工程(分離・濃縮・精製・除菌・回収等)で幅広く活用されている医薬・食品・化学工業・エレクトロニクス分野へ広く波及することが見込まれる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (3 results)

All 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results)

  • [Journal Article] Plugging nonporous polyamide membranes for enhanced rejection of small contaminants during advanced wastewater treatment2020

    • Author(s)
      Fujioka Takahiro、Osako Miyu、Tanabe Shuji、Kodamatani Hitoshi、Shintani Takuji
    • Journal Title

      Separation and Purification Technology

      Volume: 253 Pages: 117490-117490

    • DOI

      10.1016/j.seppur.2020.117490

    • NAID

      120006988094

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of heat modification conditions on the removal of N-nitrosodimethylamine by polyamide reverse osmosis membranes2020

    • Author(s)
      FUJIOKA Takahiro, OSAKO Miyu, ODA Kaoru, SHINTANI Takuji, KODAMATANI Hitoshi
    • Journal Title

      Separation and Purification Technology

      Volume: -

    • NAID

      120006988185

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transport of N-Nitrosamines through a Reverse Osmosis Membrane: Role of Molecular Size and Nitrogen Atoms2019

    • Author(s)
      Takahiro Fujioka, Hitoshi Kodamatani, Long D. Nghiem, Takuji Shintani
    • Journal Title

      Environmental Science & Technology Letters

      Volume: 6 Issue: 1 Pages: 44-48

    • DOI

      10.1021/acs.estlett.8b00624

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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