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Studies on practical removal system of NOx from boiler flue gas using microalgae

Research Project

Project/Area Number 09555254
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 生物・生体工学
Research InstitutionOsaka University

Principal Investigator

MIYAMOTO Kazuhisa  Graduate School of Pharm. Sci., Osaka Univ., Prof., 薬学研究科, 教授 (30028849)

Co-Investigator(Kenkyū-buntansha) NISHIKATA Satoshi  Fuji Electric Corporate Research and Development, Ltd., Researcher, 総合研究所, 研究者
NAGASE Hiroyasu  Graduate School of Pharm. Sci., Osaka University, Research Asso., 薬学研究科, 助手 (00252700)
HIRATA Kazumasa  Graduate School of Pharm. Sci., Osaka University, Asso. Prof., 薬学研究科, 助教授 (30199062)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 1999: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1998: ¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 1997: ¥5,800,000 (Direct Cost: ¥5,800,000)
Keywordsmicroalgae / Dunaliella tertiolecta / flue gas / air pollutant / nitrogen oxides / sulfur oxides / bioremediation / ligtht-dark cycle / 処理システム / リアクター / バイオリアクター
Research Abstract

Nitric oxide (NO) is a main component of NOx in flue gas. We found that it was possible to remove NO from flue gas using the microalgal culture system. For practical application of this system, improvement of NO removal ability, stable and continuous NO removal, and NO removal under outdoor conditions are required. In this study, therefore, the following investigations were done to evaluate practicability of this system.
1. Rate limiting factors in the NO removal system was investigated. Based on that information, the ability of NO removal in this system could be increased by improving cultivation conditions.
2. NO could be continuously removed under light condition. For outdoor system, it is important to drive this system under light-dark cycle. It was found that stable and continuous NO removal was successfully achieved by illuminating weak light during dark period in the light-dark cycle.
3. By investigation of NO removal mechanism in the cells, it was shown that dissolved NO was directly taken in the cells, oxidized to nitrite and nitrate, and then consumed by the nitrogen assimilation pathway. The oxidation ability of NO to nitrite and nitrate might be supplied by the photosynthesis under light condition and the respiration under dark condition.
4. The effect of SOx on NO removal from flue gas was investigated. It was shown that this system was available to remove NO from the desulfurized flue gas containing low concentration of SOx.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Hiroyasu Nagase: "Characteristics of Biological NO_x Removal from Flue Gas in a Dunaliella tertiolecta Culture System"Journal of Fermentation and Bioengineering. Vol.83No.5.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 吉原健一: "微細藻類による排ガス中CO_2/NO_xの同時除去技術"Eco Industry. Vol.2No.11. 5-11 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 永瀬裕康: "微細藻類を用いたNO_x処理システム"Chemical Engineering. Vol.43No.3. 207-212 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hiroyasu Nagase: "Improvement of Microalgal NO_x Removal in Bubble Column and Airlift Reactors"Journal of Fermentation and Bioengineering. Vol.86No.4. 421-423 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kazuhisa Miyamoto: "Microbial Biotechnology for Clean Environment - Simultaneous removal of CO_2 and NO_x by microalgal culture"Proceeding of APEC Workshop, Application of Photosynthetic Microorganisms in Environmental Technology. 53-61 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 竹内浩士: "トンネル喚起装置用光脱硝システム"Plant and Process. Vol.39No.7. 36-37 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 西方聡: "低濃度脱硝装置"工業材料. Vol.45No.10. 86-88 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hiroyasu Nagase: "Characteristics of Biological NOx Removal from Flue Gas in a Dunaliella tertiolecta Culture System"Journal of Fermentation and Bioengineering. Vol. 83, No. 5. 461-465 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ken-Ichi Yoshihara: "Simultaneous Removal of COィイD22ィエD2 and NOx from Flue Gas by Microalgae"Eco Industry. Vol. 2, No. 11. 5-11 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hiroyasu Nagase: "NOx removal system using microalgae"Chemical Engineering. Vol. 43, No. 3. 207-212 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hiroyasu Nagase: "Improvement of Microalgal NOx Removal in Bubble Column and Airlift Reactors"Journal of Fermentation and Bioengineering. Vol. 86, No. 4. 421-423 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kazuhisa Miyamoto: "Microbial Biotechnology for Clean Environment -Simultaneous removal of COィイD22ィエD2 and NOx by microalgal culture-"Proceeding of APEC Workshop, Application of Photosynthetic Microorganisms in Environmental Technology, Osaka. 53-61 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Koji Takeuchi: "Photocatalytic Denitrification System for Tunnel"Plant and Process. Vol. 39, No. 7. 36-37 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Satoshi Nishikata: "Removal System for Low-Level Nitrogen Oxides"Kogyo-Zairyo. Vol.45, No. 10. 86-88 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kazuhisa Miyamoto: "Mircrobial Biotechnology for Clean Environment - Simultaneous removal of CO_2 and NOx by microalgal culture -"Proceeding of APEC Workshop, Application of Photosynthetic Microorganisms in Environmental Technology. (in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Hiroyasu Nagase: "Improvement of Microalgal NOx Removal in Bubble Column and Airlift Reactors" Journal of Fermentation and Bioengineering. Vol.86 No.4. 421-423 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Hiroyasu Nagase: "Characteristics of Biological No_X Removal from Flue Gas in a Dunaliella tertiolecta Culture System" Journal of Fermentation and Bioengineering. Vol.83 No.5. 461-465 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 吉原健一: "微細藻類による排ガス中CO_2/NO_Xの同時除去技術" Eco Industry. Vol.2 No.11. 5-11 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 永瀬裕康: "微細藻類を用いたNO_X処理システム" Chemical Engineering. Vol.43 No.3. 207-212 (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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