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2001 Fiscal Year Final Research Report Summary

Degradation and purification of dioxins by bioremediation with fungi having ability for degradation of dioxins

Research Project

Project/Area Number 11694214
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 林産学
Research InstitutionEhime University

Principal Investigator

TACHIBANA Sanro  Ehime University, Faculty of Agriculture, Professor, 農学部, 教授 (10112319)

Co-Investigator(Kenkyū-buntansha) ITOH Kazutaka  Ehime University, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (50253323)
Project Period (FY) 1999 – 2001
KeywordsDioxin / Dibenzofurans / Dioxins / Screening / Dioxins degradable fungi / Bioremediation / Purification of Environment / Protolast fusion
Research Abstract

Screening of fungi having ability for degradation of dioxins from the nature was conducted in temperate and tropical zone, and selected several fungi. Degradation of dioxins in soils, incinerated ashes and water by bioremediation with the selected fungi was conducted. And, furthermore, formation of fusants having higher ability for degradation of dioxins was conducted by protoplast fusion between the two selected fungi.
1. Dioxins (2,7-DCDD, 2,8-DCDD, 2,4,8-TCDF, 2,3,7,8-TCDD, 2,3,4,7,8-PCDF and OCDD) were degraded by the selected fungi from the nature in a liquid medium. The degree of degradation of each dioxin was about 95%, 85%, 70%, 60%, 95% and 40%, respectively for 30 days incubation.
2. Biodegradation of dioxins (2,7-DCDD, 2,4,8-TCDF and 2,3,7,8-TCDD) in soils could be degraded by bioremediation with the selected fungi. Each dioxin was degraded about 70%, 60% and 50%, respectively for 30 days.
3. About 70% of dioxins in the soils (contamination level: about 1300pg-TEQ/g) was degraded by bioremediation with the selected fungi for 30 days. About 70% of the toxicity of dioxins in the soils was also removed by the bioremediation. And furthermore, the degree of degradation of the dioxins was increased about 10% by addition of a surfactant when the bioremediation was conducted.
4. About 65% of dioxins in incinerated ashes was degraded by bioremediation with the selected fungi for 60 days. It was found that the degree of degradation of dioxins in the ashes could be almost completely degraded by the repeated treatment of the bioremediation.
5. Dioxins in aqueous environment could be degraded considerably by bioremediation with the selected fungi after adsorption of dioxins by activated carbons and mixing of non-polluted soils with the adsorbed carbons. It was found that dioxins in water were almost completely adsorbed on to activated carbons.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Koga Michifusa: "Screening of fungi having ability for degradation of dioxins"Proceedings of 10th International Symposium on Wood and Pulping Chemistry. III. 102-105 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tachibana Sanro: "Screening of fungi having ability for degradation of dioxins and a trial for bioremediation of dioxins by the selected fungi"Proceedings of the Fifth International Symposium on Environmental Biotechnology. 172-175 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大川浩樹: "ダイオキシン分解菌の酵素活性と2,4,8-トリクロロジベンゾフランの分解との関連"愛媛大学農学部演習林報告. 39. 53-62 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 橘 燦郎: "木材腐朽菌を用いたバイオレメディエーションによるダイオキシン汚染土壌の浄化"研究ジャーナル. 25. 45-46 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 古賀道房: "ダイオキシン分解菌による焼却灰中のダイオキシン類の分解"第51回日本木材学会大会研究発表要旨集. 357-357 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 安木さいか: "細胞融合による高いダイオキシン分解能を有する融合菌の作出の試み(II)プットブラストの調整および電気融合による融合"第51回日本木材学会大会研究発表要旨集. 612-612 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Koga Michifusa et al.: "Screening of fungi having ability for degradation of dioxins."Proceedings of 10th International Symposium on Wood and Pulping Chemistry. Vol. III. 102-105 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tachibana Sanro et al.: "Screening of fungi having ability for degradation of dioxins and a trial for bioremediation of dioxins by the selected fungi"Proceeding of the Fifth International Symposium on Environmental Biotechnology. 172-175 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ohkawa Hiroki et al.: "Relationship between enzymatic activities of fungi having ability for degradation of dioxins and degradation of 2,4,8-trichlorodibenzofuran"Bulletin of the Ehime University Forest. No. 39. 53-62 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tachibana Sanro: "Bioremediation of dioxins-contaminated soils by wood-rot fungi"Research Jouranal of Food and Agriculture. 25 (1). 45-46 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Koga Michifusa et al.: "Bioremediation of dioxins in incinerated ashes by the selected fungi having ability for degradation of dioxins"ABSTRACTS OF THE 51st ANNIVERSARY CONFERENCE OF THE JAPAN WOOD RESEARCH SOCIETY, Tokyo. 357 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasumoto Saika et al.: "Formation of fusants having higher ability for degradation of dioxins by protoplast fusion of fungi (II) - Preparation of protoplast and fusion by electrical fusion method"ABSTRACTS OF THE 51st ANNIVERSARY CONFERENCE OF THE JAPAN WOOD RESEARCH SOCIETY, Tokyo. 612 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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