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Development of advanced reduction process (ARP) of nitrate / nitrite by electrolysis with metallic iron

Research Project

Project/Area Number 12480161
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境保全
Research InstitutionToyohashi University of Technology

Principal Investigator

FUJIE Koichi  Toyohashi University of Technology, Department of Ecological Engineering, Professor, 工学部, 教授 (30134836)

Co-Investigator(Kenkyū-buntansha) DAIMON Hiroyuki  Toyohashi University of Technology, Department of Ecological Engineering, Assistant professor, 工学部, 助手 (60335106)
GOTO Naohiro  Toyohashi University of Technology, Department of Ecological Engineering, Associate professor, 工学部, 助教授 (50303706)
胡 洪営  豊橋技術科学大学, 工学部, 助教授 (30262976)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 2002: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2001: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2000: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsInorganic wastewater / Metallic iron / Nitrate / Nitrite / Platinum electrode / Iron electrode / Nitrate reduction rate / Transformation ratio / Advanced reduction process / 硝酸・亜硝酸 / 転換率
Research Abstract

Nitrate is a common pollutant in closed surface water systems and ground water, and it usually cause serious eutrophication problem in surface water systems and health threats to human. Current technologies to remove nitrate from water include biological denitrification, separation with ion exchange or reverse osmosis and reduction by chemical reductants. In recent years, the chemical reduction of nitrate has received a lot of attention. It is considered that chemical reduction processes of nitrate can achieve a higher removal rate of nitrate than biological denitrification processes. Furthermore, chemical reduction processes have a relatively higher selectivity for nitrate than the separating methods. The purpose of this study was to develop an electrolytic method to remove nitrate from water as nitrogen gas by electrolysis.
In this study, metallic iron was used as a reductant for nitrate removal from water. The effect of pH on the reduction rate and products of nitrate under acidic an … More d aerobic conditions was experimentally studied. Our study clearly showed that nitrate in water can be completely reduced by metallic iron under acidic and aerobic conditions. Selecting an optimal pH value may control the reduction rate and products of nitrate.
The effect of the co-existences of ferrous and chloride ions on electrolytic reduction of nitrate using platinum plate as the electrodes was investigated. The experimental results showed that the electrolytic reduction of nitrate was remarkably enhanced by the addition of ferrous ion in the reaction solution. Nitrate can be completely transformed to nitrogen gas with the additions of ferrous and chloride ions in reaction solution.
In addition, effect of copper and iron ions on nitrate reduction with electrochemical method was investigated. Copper ion and ferrous ion can promote nitrate reduction. Copper ion is much more effective to nitrate reduction than ferrous ion. Initial copper ion concentration and current density have great influence on nitrate reduction. Less

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Hong-Ying Hu, Naohiro Goto, Koichi Fujie: "Effect of pH on nitrite in water by metallic iron"Water Research. 35(11). 2789-2793 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong-Ying Hu, Naohiro Goto, Koichi Fujie, Tadao Kasakura, Toshiaki Tsubone: "Reductive Treatment Characteristics of Nitrate by Metallic Iron in Aquatic Solution"Journal of Chemical Engineering of Japan. 34(9). 1097-1102 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Dongbin Wei, Hong-Ying Hu, Kosei Hiramoto, Koichi Fujie: "Quantitative prediction of electrochemical reduction characteristics for chlorinated aromatics based on their molecular structures"Chemistry Letters. 2002(4). 456-457 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong-Ying Hu, Koichi Fujie, Naohiro Goto: "Electrochemical Reductive Removal of Nitrate from Water and Wastewater"The 9th Japan-Korean Symposium on Water Environment. 1-10 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Naofumi Okuda, Hong-Ying Hu, Byung-Ran Lim, Zhang-Mao Jin, Koichi Fujie: "Electrolytic Transformation of nitrate to nitrogen gas in aquatic solution"Proceedings of International Conference on Environmental Concerns and Emerging Abatement Technologies. II. P-A-7 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong-Ying Hu, Naohiro Goto and Koichi Fujie: "Effect of pH on nitrite in water by metallic iron"Water Research. 35(11). 2789-2793 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong-Ying Hu, Naohiro Goto, Koichi Fujie, Tadao Kasakura and Toshiaki Tsubone: "Reductive Treatment Characteristics of Nitrate by Metallic Iron in Aquatic Solution"Journal of Chemical Engineering of Japan. 34(9). 1097-1102 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Dongbin Wei, Hong-Ying Hu, Kosei Hiramoto and Koichi Fujie: "Quantitative prediction of electrochemical reduction characteristics for chlorinated aromatics based on their molecular structures"Chemistry Letters. 2002(4). 456-457 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong-Ying Hu, Koichi Fujie and Naohiro Goto: "Electrochemical Reductive Removal of Nitrate from Water and Wastewater"The 9th Japan-Korean Symposium on Water Environment. 1-10 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Naofumi Okuda, Hong-Ying Hu, Byung-Ran Lim, Zhang-Mao Jin and Koichi Fujie: "Electrolytic Transformation of nitrate to nitrogen gas in aquatic solution"Proceedings of International Conference on Environmental Concerns and Emerging Abatement Technologies. II. P-A-7 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 金章茂, 奥田直史, 胡洪営, 藤江幸一: "The effect of Copper ion on nitrate reduction with electrochemical method"36回水環境学会年会講演要旨集. 173 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Dongbin Wei, Hong-Ying Hu, Kosei Hiramoto, Koichi Fujie: "Quantitive prediction of electrochemical reduction characteristics for chlorinated aromatics based on their molecular structures"Chemistry Letters. 4. 456-457 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hong-Ying Hu, Naohiro Goto, Koichi Fujie: "Effect of pH on the reduction of nitrate in water by metallic iron"Water Research. 35(11). 2789-2793 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hong-Ying Hu, Naohiro Goto, Koichi Fujie, Tadao Kasakura, Toshiaki Tsubone: "Reductive treatment characteristics of nitrate by metallic iron in aquatic solution"J.of Chemical Eng.of Japan. 34(9). 1097-1102 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Naofumi Okuda, Hong-Ying Hu, Byung-Ran Lim, Zhang-Mao Jin, Koichi Fujie: "Electrolytic transformation of nitrate to nitrogen gas in aquatic solution"Proceeding of International Conference on Environmental Concerns and Emerging Abatement Technologies. II. Abatement Technology Poster-6 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 奥田直史, 胡 洪営, 林 炳蘭, 後藤尚弘, 藤江幸一: "電解による水中硝酸イオンの窒素ガスへの還元処理条件の検討"第34回安全工学研究発表会講演予稿集. 87-88 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 奥田直史, 胡 洪営, 林 炳蘭, 後藤尚弘, 藤江幸一: "硝酸性窒素の電解処理における操作条件の検討"化学工学学会第34回秋季大会研究発表講演要旨集. O107 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hong-Ying Hu: "Effect of pH on the reduction of nitrite in water by metalic iron"Water Research. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] Hong-Ying Hu: "Chemical reduction of nitrate and nitrite in aquatic solution by zero-valent metals"Water Research. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] Hong-Ying Hu: "Electrochemical reductive removal of nitrate from water and wastewater"Proceedings of 9th Japan-Korea Symposium on Water Environment. 1-10 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hong-Ying Hu: "Chemical reduction of nitrate and nitrite in aquatic solution by zero-valent metals"Proceedings of 7th LAWQ Asia-Pacific Regional Conference. Vol.I. 553-558 (1999)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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