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Upgrade recycling with unused phosphoric acid and construction waste calcium salts.

Research Project

Project/Area Number 18K11721
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 64030:Environmental materials and recycle technology-related
Research InstitutionNational Institute of Technology, Toyama College

Principal Investigator

TAKAMATSU Saori  富山高等専門学校, その他部局等, 准教授 (10547855)

Co-Investigator(Kenkyū-buntansha) 豊嶋 剛司  富山高等専門学校, その他部局等, 准教授 (60447076)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords未利用リン資源 / 廃石膏ボード / リン酸水素カルシウム二水和物(DCPD) / ハイドロキシアパタイト(HAp) / フッ素アパタイト(FAp) / アンモニアガス吸着 / ハイドロキシアパタイト(HAp) / 第2リン酸カルシウム(DCPD) / 未利用リン / HAp / DCPD / FAp / アンモニア吸着 / ハイドロキシアパタイト / アパタイト / 悪臭吸着 / アップグレードリサイクル
Outline of Final Research Achievements

Calcium phosphate, such as calcium hydrogen phosphate dihydrate (DCPD) and hydroxyapatite (HAp), is synthesized from unused phosphorus resources generated from sewage treatment processes and gypsum powder obtained from waste gypsum board and construction waste. Fluorine ions in wastewater are used as a component to enhance the function of environmental purifiers. Synthesized fluorine apatite (FAp) can adsorb and remove ammonia gas, a malodorous substance, and is used to solve the following three problems: 1)Recovery of unused phosphorus generated in sewage treatment, 2)Reuse of waste from gypsum board in the construction industry, 3)Odor problems in the livestock industry.
This study aims to create a recycling system that contributes to creating new value from waste.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は,下水処理由来の未利用リンおよび建設廃棄物である肺石膏ボード,悪臭物質であるアンモニアガスの吸着除去に加え,フッ素排水の処理による一石三鳥のリサイクルプロセスの実現が可能であることが見出された。これまでのリサイクルの多くは,回収物を再び原料化することに重点が置かれていたため,高純度化を阻害する共存イオンなどの不純物は分離・除去する必要があった。しかし,本研究では,環境浄化資材の機能強化のために積極的に利用することで,資源・エネルギー・コストの過剰利用を抑える新しいリサイクルシステムの構築に寄与したと考える。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2022 2021 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Enhanced reactivity of apatite composite derived by phosphate treatment of gypsum with fluoride ions2022

    • Author(s)
      S. Takamatsu, F. Ninomiya, Y. Amamiya, S. Noguchi, M. Tafu
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 130 Issue: 1 Pages: 113-117

    • DOI

      10.2109/jcersj2.21105

    • NAID

      130008139204

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2022-01-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] セッコウによる排水中リン酸イオンの資源化とフッ素排水処理への利活用2021

    • Author(s)
      二宮冬,高松さおり,袋布昌幹,雨宮佑馬,豊嶋剛司
    • Journal Title

      Journal of the Society of Inorganic Materials, Japan

      Volume: 28 Pages: 3-9

    • NAID

      40022456362

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Effect of impurities on properties of calcium phosphates from unused phosphate and calcium resources2019

    • Author(s)
      F. Ninomiya, M. Tafu, S. Takamatsu, T. Toshima
    • Organizer
      GFMAT2/ BIO4
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Utilization of waste gypsum board for wastewater treatment by using phosphate treatment2019

    • Author(s)
      F. Ninomiya, M. Tafu, N. Sasakawa, S. Takamatsu, A. Iwaori, T. Toshima
    • Organizer
      第29回日本MRS年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 廃石膏ボードを用いた未利用リン資源の回収と回収物の機能性評価2018

    • Author(s)
      二宮冬,広野羽奏,袋布昌幹,高松さおり
    • Organizer
      (一社)廃棄物資源循環学会 春の研究発表会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-01-30  

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