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

Removal and recovery of phosphorus from nutrient-rich environmental water using polyphosphate-accumulating microalgae with ammonium tolerance

Research Project

Project/Area Number 19K15892
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 40030:Aquatic bioproduction science-related
Research InstitutionThe University of Tokyo

Principal Investigator

Katayama Tomoyo  東京大学, 大学院農学生命科学研究科(農学部), 特任助教 (10755656)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords微細藻類 / リン回収 / ポリリン酸 / アンモニア / 環境負荷低減 / 廃水
Outline of Research at the Start

アンモニア耐性の高い微細藻類を利用して、人為的発生源から排出される高負荷リンおよびアンモニアを除去すると同時にリン資源を回収するシステムの構築に向けた基礎科学研究を行うことを目的とする。本研究ではまず、生物多様性の高い熱帯・温帯域から現地藻株を確立し、アンモニア耐性の高い微細藻類の探索を行う。アンモニア耐性藻類株から、細胞内リン蓄積能を有する高性能な藻株のスクリーニングを行い、選定した高性能藻株を対象にリン蓄積率に及ぼす環境因子の影響を総合的に明らかにする。最後に、リン蓄積能が最大となる環境条件下で実廃水からの栄養塩除去・リン回収の有用性評価実験を行う。

Outline of Final Research Achievements

This study aimed to remove phosphate and ammonia from the nutrient-rich environmental water and recover phosphorus using microalgae. Among 151 strains isolated from Malaysia and Japan, 11 strains were selected for their ammonia tolerance and high growth potential. The highest accumulation of PolyP was observed in strain SLG4-06, which was determined to be a promising strain for phosphorus removal and recovery. The effects of light intensity and temperature on PolyP accumulation capacity were examined for this strain. The results showed that the growth rate and the amount of PolyP were maximum at 25℃ and 250 μE/m2/s, indicating that the SLG4-06 tended to accumulate phosphorus as PolyP in the cells during the exponential phase.

Academic Significance and Societal Importance of the Research Achievements

PolyP蓄積微細藻類の探索を行った研究例は希少な中,本研究では珪藻やハプト藻に比べ,緑藻はPolyPを蓄積しやすいことを明らかにした。本研究で選定されたSLG4-06株は,未記載種(緑藻クロレラ目の新属)であることがわかり,PolyP蓄積藻類として初めての報告である。今後は,細胞内へのリン酸塩の取り込みをより短期間で行う培養技術を開発し,リン除去率及びPolyP蓄積率のさらなる向上に挑戦し,水質環境汚染およびリン資源問題の解決に寄与する研究を展開していきたい。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] Universiti Putra Malaysia/Universiti Malaysia Terengganu(マレーシア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Universiti Putra Malaysia/Universiti Malaysia Terengganu(マレーシア)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Bioprospecting of tropical microalgae for high-value products: n-3 polyunsaturated fatty acids and carotenoids2022

    • Author(s)
      Tomoyo KATAYAMA, Norazira Abdu Rahman, Helena Khatoon, Nor Azman Kasan, Norio Nagao, Yuichiro Yamada, Kazutaka Takahashi, Ken Furuya, Mohd Effendy Abd Wahid, Fatimah Md. Yusoff, Malinna Jusoh
    • Journal Title

      Aquaculture Report

      Volume: 27 Pages: 101406-101406

    • DOI

      10.1016/j.aqrep.2022.101406

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bioprospecting of indigenous marine microalgae with ammonium tolerance from aquaculture ponds for microalgae cultivation with ammonium-rich wastewaters2020

    • Author(s)
      151.Katayama, T., N. Nagao, N. A. Kasan, H. Khatoon, N. A. Rahman, K. Takahashi, K. Furuya, Y. Yamada, Md E. A. Wahid, M. Jusoh
    • Journal Title

      Journal of Biotechnology

      Volume: 323 Pages: 113-120

    • DOI

      10.1016/j.jbiotec.2020.08.001

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 高アンモニア耐性をもつポリリン酸蓄積微細藻類の探索2023

    • Author(s)
      片山智代, 高橋一生, 古谷研, Mohd Effendy Abd Wahid, Fatimah Md. Yusoff
    • Organizer
      日本藻類学会第47回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Bioprospecting for Malaysian indigenous microalgae as functional food sources2021

    • Author(s)
      Tomoyo Katayama, Norazira Abdu Rahman, Kazutaka Takahashi, Ken Furuya, Mohd Effendy Abd Wahid, Malinna Jusoh, Yuichiro Yamada
    • Organizer
      The 7th Conference of the International Society for Applied Phycology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bio-prospecting of tropical indigenous microalgae for the production of carotenoids and polyunsaturated fatty acids from Peninsular Malaysia2021

    • Author(s)
      Tomoyo Katayama, Norazira Abdu Rahman, Kazutaka Takahashi, Ken Furuya, Mohd Effendy Abd Wahid, Malinna Jusoh
    • Organizer
      EcoSummit 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Enhancement of selected high-value microalgae for lipids and carotenoids production2021

    • Author(s)
      Muhammad Faiz Zakaria, Jessreen Tega, Noorazilah Haris, Tomoyo Katayama, Nadiah W Rasdi, Mohd Effendy Abd Wahid, Malinna Jusoh
    • Organizer
      The 7th International Biotechnology Symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] マレーシア養殖池から得られた高アンモニア耐性をもつ有用微細藻類の探索2021

    • Author(s)
      21)片山智代, Helena Khatoon, Mohd Effendy Abd Wahid, 高橋一生, 古谷研
    • Organizer
      日本藻類学会第45回大
    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi