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Development of waste slag conversion process based on chemical methodology and its applications in CO2 capture and utilization

Research Project

Project/Area Number 21K05147
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 34030:Green sustainable chemistry and environmental chemistry-related
Research InstitutionOsaka University

Principal Investigator

Kuwahara Yasutaka  大阪大学, 大学院工学研究科, 准教授 (40635330)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords鉄鋼スラグ / リサイクル / 多孔質材料 / 酸化カルシウム / CO2回収貯留 / CO2変換 / 資源リサイクル / 廃スラグ / CO2吸着 / CO2再資源化 / 多孔体
Outline of Research at the Start

本研究では、製鉄プロセスで大量に副生成する鉄鋼スラグを原料として高表面積を有する酸化物ナノ多孔体を製造するための資源変換プロセスを開発する。また、合成した酸化物ナノ多孔体の化学的特性を生かし、①二酸化炭素(CO2)の吸着回収と②CO2再資源化反応への応用を行う。これら研究を通じ、鉄鋼スラグを原料とする資源循環プロセスの基盤構築とCO2の回収・利用(CCU)に貢献しうる新しい環境技術を創成する。

Outline of Final Research Achievements

In this study, we developed a new chemical process to convert steel slags, which are by-products of the steel industry in large quantities and have complex chemical compositions, into CaO-mesoporous silica composites, and demonstrated that the resulting oxide composites can be used as CO2 adsorbents. In particular, the adsorbent synthesized from converter slag exhibited higher CO2 adsorption capacity and higher durability than the adsorbent synthesized from blast furnace slag. In addition, it was demonstrated that CaO-mesoporous silica composites synthesized from blast furnace slag with Ni particles can function as an effective catalyst for the methanation reaction, which produces methane from CO2.

Academic Significance and Societal Importance of the Research Achievements

開発した化学変換プロセスを利用することで、鉄鋼産業で大量に副生成される鉄鋼スラグをCO2吸着材へと変換することが可能となる。また、変換した機能性酸化物複合体は、CO2をメタンへと変換するメタネーション反応の触媒担体としても利用できる。本プロセスは現在鉄鋼産業が直面している『廃スラグの有効利用』と『CO2排出量の削減』という2つの重要な問題に貢献しうる新しい環境技術として今後の更なる展開が期待できる。

Report

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

    (20 results)

All 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (12 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] マレーシアサインズ大学(マレーシア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] マレーシアサインズ大学(マレーシア)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Universiti Sains Malaysia(マレーシア)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Direct Conversion of Desiliconization Slag to a CaO-Mesoporous Silica Composite for CO<sub>2</sub> Capture: Effect of Acid Dissolution Agent2023

    • Author(s)
      Hashim Zaza Hazrina、Kuwahara Yasutaka、Mohamed Abdul Rahman、Yamashita Hiromi
    • Journal Title

      ISIJ International

      Volume: 63 Issue: 3 Pages: 579-585

    • DOI

      10.2355/isijinternational.ISIJINT-2022-435

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2023-03-15
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CO<sub>2</sub> Adsorption on a CaO–Ca<sub>12</sub>Al<sub>14</sub>O<sub>33</sub> Composite Synthesized from a Blast Furnace Slag and its Regenerative Ability2023

    • Author(s)
      Hashim Zaza Hazrina、Kuwahara Yasutaka、Mohamed Abdul Rahman、Yamashita Hiromi
    • Journal Title

      ISIJ International

      Volume: 63 Issue: 1 Pages: 190-196

    • DOI

      10.2355/isijinternational.ISIJINT-2022-310

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2023-01-15
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Synthesis of a CaO-Fe2O3-SiO2 Composite from a Dephosphorization Slag for Adsorption of CO22022

    • Author(s)
      Zaza Hazrina Hashim、Yasutaka Kuwahara、Aiko Hanaki、Abdul Rahman Mohamed、Hiromi Yamashita
    • Journal Title

      Catalysis Today

      Volume: - Pages: 264-272

    • DOI

      10.1016/j.cattod.2022.03.030

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 鉄鋼スラグを原料とした機能性多孔質材料の合成と環境浄化への応用2022

    • Author(s)
      桑原泰隆、山下弘巳
    • Journal Title

      ゼオライト

      Volume: 39 Pages: 56-68

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Direct Synthesis of a Regenerative CaO-Fe3O4-SiO2 Composite Adsorbent from Converter Slag for CO2 Capture Applications2022

    • Author(s)
      Y. Kuwahara, A. Hanaki, and H. Yamashita
    • Journal Title

      ACS Sustainable Chemistry & Engineering

      Volume: 10 (1) Issue: 1 Pages: 372-381

    • DOI

      10.1021/acssuschemeng.1c06480

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 製鋼スラグを原料としたCaO-Fe3O4-SiO2複合体への転換における溶解酸の影響2023

    • Author(s)
      桑原泰隆、Zaza Hazrina Hashim、山下弘巳
    • Organizer
      日本金属学会2023年春期講演大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 製鋼スラグを原料としたCaO系酸化物複合体への変換とCO2回収への応用2023

    • Author(s)
      桑原泰隆、Zaza Hazrina Hashim、山下弘巳
    • Organizer
      日本鉄鋼協会第185回春季講演大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Synthesis of a CaO-Fe2O3-SiO2 composite from dephosphorization slag for CO2 adsorption2022

    • Author(s)
      Zaza Hazrina Hashim, Yasutaka Kuwahara, Aiko Hanaki, Hiromi Yamashita
    • Organizer
      12th International Conference on Environmental Catalysis
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 鉄鋼スラグを原料としたCaO系酸化物複合体への転換とCO2回収への応用2022

    • Author(s)
      桑原泰隆、花木愛子、山下弘巳
    • Organizer
      第52回石油・石油化学討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 化学プロセスによる鉄鋼スラグの機能性酸化物への転換と環境保全・CO2吸着への応用2022

    • Author(s)
      桑原泰隆
    • Organizer
      日本鉄鋼協会 評価・分析・解析部会フォーラム 第2回フォーラム研究発表会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 転炉スラグを原料としたCaO系酸化物複合体への転換とCO2吸着への応用2022

    • Author(s)
      桑原泰隆、花木愛子、山下弘巳
    • Organizer
      日本鉄鋼協会 第183回春季講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 転炉スラグを原料としたCaO-Fe3O4-SiO2複合体の合成とCO2吸着への応用2022

    • Author(s)
      桑原泰隆、花木愛子、山下弘巳
    • Organizer
      日本金属学会2022年春期講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 転炉スラグを原料とした機能性材料変換プロセスの開発とCO2吸着への応用2021

    • Author(s)
      花木愛子、桑原泰隆、山下弘巳
    • Organizer
      日本鉄鋼協会 第182回秋季講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 転炉スラグを原料とした機能性酸化物複合体の合成とCO2吸着への応用2021

    • Author(s)
      花木愛子、桑原泰隆、山下弘巳
    • Organizer
      日本金属学会2021年秋期講演大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 廃鉄鋼スラグを原料としたCaO-Fe3O4-多孔質シリカ複合体の合成とCO2吸着への応用2021

    • Author(s)
      花木愛子、桑原泰隆、山下弘巳
    • Organizer
      第37回ゼオライト研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Synthesis of Porous Functional Materials from Blast Furnace Slag and Evaluation of their CO2 Adsorption Performance2021

    • Author(s)
      Aiko Hanaki, Yasutaka Kuwahara, Hiromi Yamashita
    • Organizer
      1st Japan-China Symposium on Catalysis (1stJCSC)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Synthesis of CaO‐Mesoporous SiO2 Composite from Blast Furnace Slag and Its Evaluation of CO2 Adsorption Performance2021

    • Author(s)
      Aiko Hanaki, Yasutaka Kuwahara, Hiromi Yamashita
    • Organizer
      18th Japan-Korea Symposium on Catalysis (18JKSC)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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