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A new biological method to retard dispersion of radioactive cesium from contaminated forests

Research Project

Project/Area Number 26630489
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Nuclear engineering
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

OHNUKI Toshihiko  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門・先端基礎研究センター, 研究員 (20354904)

Co-Investigator(Kenkyū-buntansha) SAKAMOTO Fuminori  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門・先端基礎研究センター, 研究員 (60391273)
KOZAI Naofumi  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門・先端基礎研究センター, 研究員 (80354877)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords放射性Cs / 森林汚染 / 拡散防止 / 廃菌床 / 放射性セシウム / 核種移行 / 回収 / 糸状菌
Outline of Final Research Achievements

he accumulation of radioactive Cs by mycelia of filamentous fungi has been studied by combining agar medium method where mycelia is grown on the filter placed on the agar media containing 137Cs and minerals, with autoradiography analysis using imaging plate. The results showed that fungi accumulate radioactive Cs even when the mineral is present. To test ability of fungi for the remediation, We placed the spent mushroom substrate (SMS) which is kinds of waste after growing edible mushrooms for the in-situ remediation in Fukushima. The powder SMSs were placed in a forest for approximately 2 months. The concetrations of radioactive Cs in the spent mushroom substrates and soils beneath showed that the powder SMS is effective method to retard the dispersion of radioactive Cs from forests.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (2 results)

All 2016 2015

All Presentation (2 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Presentation] Accumulation of radioactive cesium in yeast and filamentous fungi2016

    • Author(s)
      Toshihiko Ohnuki
    • Organizer
      The 28th Reimei Workshop on Radioactive Waste Treatment and Remediation
    • Place of Presentation
      原子力科学研究所(茨城県東海村)
    • Year and Date
      2016-02-25
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] REMEDIATION OF CONTAMINATED FOREST BY SPENT MUSHROOM SUBSTRATE2015

    • Author(s)
      T.Ohnuki, F.Sakamoto, N.Kozai, K. Shiina, K. Tanaka, J. Namekawa, S. Yamasaki
    • Organizer
      5th East Asia Forum on Radwaste Management
    • Place of Presentation
      Taichung Taiwan
    • Year and Date
      2015-10-25
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2014-04-04   Modified: 2017-05-10  

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