• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Reverse osmosis membranes for resource recovery from seawater

Research Project

Project/Area Number 20H02449
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26030:Composite materials and interfaces-related
Research InstitutionShinshu University

Principal Investigator

Endo Morinobu  信州大学, 先鋭領域融合研究群先鋭材料研究所, 特別栄誉教授 (10021015)

Co-Investigator(Kenkyū-buntansha) 藤澤 一範  信州大学, 先鋭領域融合研究群先鋭材料研究所, 准教授(特定雇用) (00724634)
モレロス・ゴメス アーロン  信州大学, 先鋭領域融合研究群先鋭材料研究所, 特任教授 (00793746)
手島 正吾  信州大学, 先鋭領域融合研究群先鋭材料研究所, 特任教授 (10502015)
竹内 健司  信州大学, 学術研究院工学系, 准教授 (20504658)
Cruz Rodolfo  信州大学, 先鋭領域融合研究群先鋭材料研究所, 特任教授 (30597878)
林 卓哉  信州大学, 学術研究院工学系, 教授 (80313831)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Keywords逆浸透膜 / 資源回収 / カーボンナノチューブ / 海水淡水化 / マルチスケールシミュレーション / マルチスケールシミュレーシ
Outline of Research at the Start

逆浸透(RO)膜を用いた海水淡水化による造水コストは約1$/tで、途上国にとって大きな経済負担になり、SDGsの水問題の解決も遅れている。低コスト化策は、RO膜による海水淡水化の濃縮排水を利用して、そこから希少資源を回収して造水コストに還元することが有望視されている。原水の約45%がRO膜で淡水化されるので、廃液の海水に含まれる資源は約2倍の濃度に濃縮される。この際、RO膜処理(一次)の際に、高透水性RO膜が重要となり、さらに二次的に高圧逆浸透を実施して高濃度廃水を原水の3倍程度にできる強靭なRO膜について、カーボンナノチューブとポリアミドの複合膜を調製およびその機能と透水機構を解明する。

Outline of Final Research Achievements

The use of concentrated wastewater (brine) from desalination plants to recover scarce resources from it and return them to desalination costs is promising. Robust reverse osmosis (RO) membranes capable of concentrating brine more than three times as much as raw water through high-pressure reverse osmosis are needed. Therefore, we aimed to develop an efficient concentration system using a nano-composite RO membrane of carbon nanotubes and polyamide, which is expected to have high pressure resistance, for the purpose of high concentration of seawater and recovery of valuable resources. Using the high-pressure resistant RO membrane, circulation concentration experiments were conducted under ultrahigh pressure (up to 12 MPa). As a result of circulation concentration tests using brine as raw water, the salt concentration could be concentrated up to 13%, and the concentration ratio of Li was confirmed to be 3.7. This result will also contribute to the conservation of the marine environment.

Academic Significance and Societal Importance of the Research Achievements

海水淡水化時に排出されるブライン処理は大きな問題となっており、RO膜を用いた濃縮による資源回収は環境的視点でも社会的に意義がある。また、本研究によってCNTを複合したロバスト性ナノ複合RO膜による有価物回収の可能性を示したことは、学術的にも大変有意義である。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (6 results)

All 2024 2021 2020

All Presentation (6 results) (of which Int'l Joint Research: 5 results)

  • [Presentation] 逆浸透膜による海水の高濃縮化システムの構築2024

    • Author(s)
      中野紘汰,竹内健司,前田潤,遠藤守信
    • Organizer
      日本水環境学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Quasi-2D Polyamides Reinforced with 1D Nanotubes and Nanofibers for Novel Desalination Membranes2021

    • Author(s)
      Rodolfo Cruz-Silva
    • Organizer
      MRS Fall Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Machine Learning for Polyamide Carbon Nanotube Composite Membranes2021

    • Author(s)
      Aaron Morelos-Gomez
    • Organizer
      MRS Fall Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis and Characterization of Cellulose Nanofiber Reinforced Aromatic Polyamide Membranes2020

    • Author(s)
      Rodolfo Cruz-Silva
    • Organizer
      2020 Virtual MRS Spring/Fall Meeting & Exhibit
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oil Dynamic Shell Surrounding Fullerenes2020

    • Author(s)
      Aaron Morelos Gomez
    • Organizer
      MRS Fall Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Graphene Oxide Membranes for Water Filtration2020

    • Author(s)
      Aaron Morelos Gomez
    • Organizer
      LatinXChem
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi