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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/31773

    標題: Electro-assisted Fenton treatment of ammunition wastewater containing nitramine explosives
    作者: Anotai, Jin
    Tanvanit, Piyawat
    Garcia-Segura, Sergi
    Lu, Ming-Chun
    貢獻者: King Mongkuts Univ Technol Thonburi, Faulty Engn
    Chulalongkorn Univ, Natl Ctr Excellence Environm & Hazardous Waste Ma
    Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
    關鍵字: Photo-Fenton
    Anodic oxidation
    RuO2/IrO2 dimensional stable anodes (DSA)
    Water treatment technologies
    Actual effluent electro-Fenton
    日期: 2017-07
    上傳時間: 2018-11-30 15:56:12 (UTC+8)
    出版者: Inst Chemical Engineers
    摘要: The treatment of an actual wastewater from ammunition manufacturing process containing highly hazardous nitramine explosives has been studied by different water treatment technologies based on Fenton's chemistry. The in-situ production of hydroxyl radical as highly oxidizing agent conducted to the overall degradation of the nitramine explosives contained in the effluent samples. The kinetic abatement of octahydro-1,3,5,7-tetranitro1,3,5,7-tetrazocine (HMX) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) followed the crescent order Fenton = photo-Fenton > electro-assisted Fenton process. The greater performance of the electro-assisted process is justified by the faster regeneration of Fe2+ from the electrochemical reduction and the oxidation contribution of the heterogeneous hydroxyl radical electrogenerated on the dimensional stable anode surface. On the other hand, similar DOC abatements of ca. 60% were attained after 2 h of treatment for all the technologies, being slightly superior for the photo-Fenton process due to the photodecarboxylation of carboxylate-iron complexes. The evaluation of the BOD5 and COD allowed considering the effluent biodegradability enhancement after Fenton's technologies treatment, being feasible their application prior to a biological treatment. From the by-products identification, degradative pathways of the main nitramine pollutants contained in the actual effluent have been proposed. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
    關聯: Process Safety and Environmental Protection, v.109, pp.429-436
    Appears in Collections:[環境資源管理系(所)] 期刊論文

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