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Wastewater treatment of plating solution and fertilizer production process using the oxidation properties of metal oxides

Research Project

Project/Area Number 20K21866
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 64:Environmental conservation measure and related fields
Research InstitutionKyushu University

Principal Investigator

Einaga Hisahiro  九州大学, 総合理工学研究院, 教授 (90356593)

Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords酸化銅 / 亜鉛 / 酸化還元特性 / リン / 再資源化 / 触媒 / リン資源 / ホスフィン酸イオン / 遷移金属酸化物 / 酸化還元反応
Outline of Research at the Start

リン化合物は化学工業から農業用肥料まで幅広く使用される汎用製品であるが、枯渇性の資源である一方、環境中に排出されると海水の汚染につながるため、排水処理方法の高度化が求められている.本研究では、産業界から排出されるリン資源の回収と再利用、肥料化を目的として、めっき廃液中のホスフィン酸イオンを効率よく亜リン酸イオンに転換する触媒酸化還元サイクルを構築する.

Outline of Final Research Achievements

In this study, copper-based oxide catalysts with high redox properties were developed for the development of phosphorus resource recovery from phosphorus-containing waste liquids discharged from electroless plating processes. Cu-Al and Cu-Zn-Al oxide materials were prepared by a liquid phase precipitation method using sodium carbonate as a precipitant, and the redox properties of each catalyst material were compared by the oxygen pulse method and the temperature rise hydrogen reduction method. It was found that the addition of alumina increases the surface area of the catalysts and the copper oxides are highly dispersed on alumina, and that the addition of zinc to these materials increases the particle size of copper oxide on alumina and changes the redox properties. The use of tetramethylammonium hydroxide as a precipitant was found to improve the redox properties and dramatically increase the amount of oxygen adsorbed.

Academic Significance and Societal Importance of the Research Achievements

リン化合物は化学工業から農業用肥料まで幅広く使用される汎用製品であるが、枯渇性の資源である。一方、化学工業プロセスから排出されるリンは環境中に排出されると海水の汚染につながるため、排水処理方法の高度化が求められている。本研究では、無電解ニッケルめっき工程におけるリンを含む化合物を温和な条件で酸化し、回収する方法の開発の一環として、酸化還元特性の高い酸化銅系触媒材料を得ることができた。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Rational design of Cu-doped ZnS nanospheres for visible light photocatalytic H2 evolution2022

    • Author(s)
      X. Liu, Y. Zhang, S. Matsushima, T. Sugiyama, H. Hojo, H. Einaga
    • Journal Title

      ACS Applied Energy Materials

      Volume: 5 Issue: 2 Pages: 1849-1857

    • DOI

      10.1021/acsaem.1c03323

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Catalytic properties of manganese-based mixed metal oxides under microwave heating for air pollution control2021

    • Author(s)
      Hisahiro Einaga, Siyu Ding, Hajime Hojo
    • Organizer
      1st Japan-China Symposium on Catalysis (1stJCSC)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cu-Zn-Al系酸化物の酸化還元特性制御2021

    • Author(s)
      永山史也、北條元、永長久寛
    • Organizer
      日本セラミックス協会 第34回秋季シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] La-Ni系ペロブスカイト型酸化物の触媒特性向上に関する研究2021

    • Author(s)
      猪原由香、北條元、永長久寛
    • Organizer
      セラミックス基礎科学討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 複合金属酸化物触媒の設計と空気清浄技術への応用2020

    • Author(s)
      永長久寛
    • Organizer
      2020年度(第11回)触媒科学研究発表会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 表面サイトへの異種金属添加によるLaMnO3触媒特性の制御2020

    • Author(s)
      桑原孝輔、徳永陸、北條元、永長久寛
    • Organizer
      第126回触媒討論会
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2023-01-30  

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