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モリブデン曝露に対する健康影響評価及び浄化技術の開発

Research Project

Project/Area Number 20K19982
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 64010:Environmental load and risk assessment-related
Research InstitutionUniversity of Tsukuba (2021-2023)
Nagoya University (2020)

Principal Investigator

原 田  筑波大学, 生命環境系, 助教 (80868258)

Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsモリブデン / 吸着 / グラニュール汚泥 / 地下水 / バイオ炭 / 下水汚泥 / 浄化材 / 毒性評価 / 飲用井戸水 / リスク評価 / 元素浄化 / 元素曝露 / 健康影響
Outline of Research at the Start

研究代表者らは、開発途上国の飲用井戸水に関するフィールドワーク調査研究から、モリブデンの高濃度汚染傾向を確認している。飲水を介した慢性的なモリブデン曝露による発癌などの健康影響が想定される。しかし、国際がん研究機関(IARC)によると、モリブデン化合物は「ヒトに対する発癌の可能性がある」とされているが、水中の主な形態であるモリブデン酸イオンによる発癌毒性に関しては全く明らかにされていない。本研究は、モリブデンの発癌毒性およびその機構をin vitroで評価し、モリブデンの新規浄化法を開発する。本研究の成果は、世界的なモリブデンの飲料水水質基準の見直しにつながると考えている。

Outline of Annual Research Achievements

本研究では、申請者はアフガニスタンで採取した飲用井戸水サンプルの元素解析を行い、高濃度のモリブデン汚染を確認した。モリブデンの毒性については、酸化モリブデンは発がん物質カテゴリー2Bに分類されているが、発がん性に関する影響は十分明らかではない。また、水中の主な形態であるモリブデン酸イオンによる発がん毒性は全く明らかにされていない。モリブデンに汚染された地下水の検出情報が非常に少ないことに踏まえ、WHO飲料水水質ガイドラインでは、モリブデンの基準値を設定しておらず、健康を考慮した値として70ug/Lを推奨している。本研究はアフガニスタンの飲用井戸水の網羅的元素解析を通してモリブデン汚染地下水の情報を提供し、生物学的手法を用いて水中モリブデン酸の健康リスクを科学的に評価し、さらにモリブデンの除去に資する浄化技術を開発する等一連の研究による確実に地下水元素汚染問題に貢献することを目指している。昨年度までは、井戸水サンプルの元素解析を完了し、モリブデンの発がん毒性を評価し、モリブデンの除去に優れる効果がある2種類の浄化材を確認した。2023年度では、さらに余剰グラニュール汚泥を用いるモリブデン吸着メカニズムの解明、およびモリブデン吸着に対する共存元素の影響を調べた。モリブデン吸着前後のグラニュールをSEM-EDXによる元素分布分析、抽出した細胞外高分子物質中のモリブデン濃度分析により、細胞外高分子物質に含む多糖類、鉄、カルシウム、マグネシウム等の陽イオンはモリブデンの吸着に貢献した可能性を示した。また、グラニュール汚泥の表面に沈殿物を形成することによって、吸着中に色の変化が見られ、モリブデン吸着量の迅速な検出に貢献することが可能である。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

コロナ影響で、アフガニスタンでは再度井戸水サンプルの採取ができなくなり、開発した浄化材の実サンプルの浄化効果を確認できなかったが、今年度から開発した浄化材のモリブデン吸着メカニズムと共存元素の影響、鉛等毒性がある重金属の吸着効果とメカニズムに関する研究を進めており、新規浄化材のより広い応用可能性を確認できた。以上のことから、上記の評価を判断した。

Strategy for Future Research Activity

今年度では、これまでの成果をまとめ論文を発表し、開発した浄化材の吸着メカニズムと再利用可能性を続けて検討する予定である。

Report

(4 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (21 results)

All 2024 2023 2022 2021 Other

All Journal Article (13 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 6 results) Remarks (2 results)

  • [Journal Article] Enhanced Pb(II) removal from wastewater by co-pyrolysis biochar derived from sewage sludge and calcium sulfate: Performance evaluation and quantitative mechanism analysis2024

    • Author(s)
      Wang Zhiwei、Nie Qi、Lei Zhongfang、Zhang Zhenya、Shimizu Kazuya、Yuan Tian
    • Journal Title

      Separation and Purification Technology

      Volume: 329 Pages: 125124-125124

    • DOI

      10.1016/j.seppur.2023.125124

    • Related Report
      2023 Research-status Report
  • [Journal Article] Enhanced performance of algal-bacterial aerobic granular sludge in comparison to bacterial aerobic granular sludge for treating surfactant-containing wastewater2023

    • Author(s)
      Wang Hanxiao、Liu Tongtong、Ding Yi、Wang Zhiwei、Zhang Zhenya、Lei Zhongfang、Shimizu Kazuya、Yuan Tian
    • Journal Title

      Bioresource Technology Reports

      Volume: 22 Pages: 101462-101462

    • DOI

      10.1016/j.biteb.2023.101462

    • Related Report
      2023 Research-status Report
  • [Journal Article] Efficient removal of molybdate from groundwater with visible color changes using wasted aerobic granular sludge2023

    • Author(s)
      Yuan Tian、Xu Jing、Wang Zhiwei、Lei Zhongfang、Kato Masashi、Shimizu Kazuya、Zhang Zhenya
    • Journal Title

      Separation and Purification Technology

      Volume: 317 Pages: 123849-123849

    • DOI

      10.1016/j.seppur.2023.123849

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhanced fixation of dissolved inorganic carbon by algal-bacterial aerobic granular sludge during treatment of low-organic-content wastewater2023

    • Author(s)
      Xu Jing、Yuan Tian、Wang Lanting、Zhang Chi、Lei Zhongfang、Shimizu Kazuya、Zhang Zhenya
    • Journal Title

      Bioresource Technology

      Volume: 378 Pages: 128951-128951

    • DOI

      10.1016/j.biortech.2023.128951

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Stability of solid form Cr(VI) after being loaded onto hydrochar under different soil pH conditions2023

    • Author(s)
      Kavindi Gajasinghe Arachchige Ganga、Lei Zhongfang、Yuan Tian、Shimizu Kazuya、Zhang Zhenya
    • Journal Title

      Bioresource Technology Reports

      Volume: 21 Pages: 101376-101376

    • DOI

      10.1016/j.biteb.2023.101376

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhanced economic benefit of recycling Fe3O4 for promotion of volatile fatty acids production in anaerobic fermentation of food waste2023

    • Author(s)
      Wang Lanting、Liu Tianxiao、Xu Jing、Wang Zhiwei、Lei Zhongfang、Shimizu Kazuya、Zhang Zhenya、Yuan Tian
    • Journal Title

      Bioresource Technology

      Volume: 369 Pages: 128428-128428

    • DOI

      10.1016/j.biortech.2022.128428

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Pb(II) bioremediation using fresh algal-bacterial aerobic granular sludge and its underlying mechanisms highlighting the role of extracellular polymeric substances2023

    • Author(s)
      Wang Zhiwei、Wang Hanxiao、Nie Qi、Ding Yi、Lei Zhongfang、Zhang Zhenya、Shimizu Kazuya、Yuan Tian
    • Journal Title

      Journal of Hazardous Materials

      Volume: 444 Pages: 130452-130452

    • DOI

      10.1016/j.jhazmat.2022.130452

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fe3O4 enhanced efficiency of volatile fatty acids production in anaerobic fermentation of food waste at high loading2022

    • Author(s)
      Wang Lanting、Lei Zhongfang、Yang Xiaojing、Zhang Chi、Liu Chang、Shimizu Kazuya、Zhang Zhenya、Yuan Tian
    • Journal Title

      Bioresource Technology

      Volume: 364 Pages: 128097-128097

    • DOI

      10.1016/j.biortech.2022.128097

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Potential application of a hydrotalcite-like compound for reduction of toxicity to aquatic organisms via rapid and efficient removal of hydrogen sulfide2022

    • Author(s)
      Yuan Tian、Hashimoto Kazunori、Tazaki Akira、Hasegawa Masahiro、Kurniasari Fitri、Ohta Chihiro、Aoki Masayo、Ohgami Nobutaka、Kato Masashi
    • Journal Title

      Journal of Environmental Management

      Volume: 321 Pages: 115861-115861

    • DOI

      10.1016/j.jenvman.2022.115861

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Insight into enhanced acetic acid production from food waste in anaerobic hydrolysis/acidification with Fe3O4 supplementation2022

    • Author(s)
      Wang Lanting、Lei Zhongfang、Zhang Zhenya、Shimizu Kazuya、Yuan Tian、Li Shengnan、Liu Siting
    • Journal Title

      Waste Management

      Volume: 150 Pages: 310-319

    • DOI

      10.1016/j.wasman.2022.07.019

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Redistribution of potentially toxic elements in the hydrosphere after the relocation of a group of tanneries2022

    • Author(s)
      Kurniasari Fitri、Tazaki Akira、Hashimoto Kazunori、Yuan Tian、Al Hossain M.M. Aeorangajeb、Akhand Anwarul Azim、Ahsan Nazmul、Ohnuma Shoko、Kato Masashi
    • Journal Title

      Chemosphere

      Volume: 303 Pages: 135098-135098

    • DOI

      10.1016/j.chemosphere.2022.135098

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Use of hydrochar from hydrothermal co?carbonization of rice straw and sewage sludge for Cr(VI) bioremediation in soil2022

    • Author(s)
      Kavindi Gajasinghe Arachchige Ganga、Lei Zhongfang、Yuan Tian、Shimizu Kazuya、Zhang Zhenya
    • Journal Title

      Bioresource Technology Reports

      Volume: 18 Pages: 101052-101052

    • DOI

      10.1016/j.biteb.2022.101052

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of an efficient remediation system with a low cost after identification of water pollutants including phenolic compounds in a tannery built-up area in Bangladesh2021

    • Author(s)
      Yuan Tian、Tazaki Akira、Hashimoto Kazunori、Al Hossain M.M. Aeorangajeb、Kurniasari Fitri、Ohgami Nobutaka、Aoki Masayo、Ahsan Nazmul、Akhand Anwarul Azim、Kato Masashi
    • Journal Title

      Chemosphere

      Volume: 280 Pages: 130959-130959

    • DOI

      10.1016/j.chemosphere.2021.130959

    • NAID

      120007183198

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Enhanced Destruction of Sewage Sludge by Eco-friendly and Low-cost Deep Eutectic Solvent for Simultaneous Dewaterability Enhancement and Selective Electrochemical Recycling of Heavy Metals2023

    • Author(s)
      Zhiwei Wang, Tian Yuan*, Zhenya Zhang*, Zhongfang Lei, Kazuya Shimizu
    • Organizer
      The 1st International Conference on Bioprocess and Sustainability
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Preparation of Fe-loaded Biochar Derived from Rise Husk for Molybdate Removal from Groundwater2023

    • Author(s)
      Xiyao Wei, Tian Yuan*, Zhenya Zhang*, Zhongfang Lei, Kazuya Shimizu
    • Organizer
      The 1st International Conference on Bioprocess and Sustainability
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Optimization of Operational Parameters for Potassium Removal from Bamboo Biomass by Water Washing2023

    • Author(s)
      Yi Ding, Zhenya Zhang*, Tian Yuan*, Zhongfang Lei, Kazuya Shimizu
    • Organizer
      The 1st International Conference on Bioprocess and Sustainability
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Dewatering Performance of Digested Sludge by Layered Double Hydroxides (LDHs) Conditioning and Its Phosphorus Recovery Potential Assessment2023

    • Author(s)
      Baoqi Gao, Tian Yuan*, Zhongfang Lei, Zhenya Zhang*, Kazuya Shimizu
    • Organizer
      The 1st International Conference on Bioprocess and Sustainability
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Efficient Pb(II) Removal from Wastewater by Co-pyrolysis Biochar Derived from Sewage Sludge and Calcium Sulfate: Performance Evaluation and Quantitative Mechanism Analysis2023

    • Author(s)
      Qi Nie, Zhiwei Wang, Yuan Tian*, Zhenya Zhang*, Zhongfang Lei, Kazuya Shimizu
    • Organizer
      The 1st International Conference on Bioprocess and Sustainability
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Efficient Removal of Molybdate in Groundwater with Visible Color Changes Using Wasted Aerobic Granular Sludge2023

    • Author(s)
      Tian Yuan*, Jing Xu, Zhiwei Wang, Zhongfang Lei, Zhenya Zhang, Kazuya Shimizu
    • Organizer
      The 1st International Conference on Bioprocess and Sustainability
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks]

    • URL

      https://trios.tsukuba.ac.jp/ja/researcher/0000004561

    • Related Report
      2023 Research-status Report
  • [Remarks]

    • URL

      https://www.researchgate.net/profile/Tian-Yuan-10

    • Related Report
      2023 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-12-25  

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