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https://ir.cnu.edu.tw/handle/310902800/31773
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| 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 |
| 顯示於類別: | [環境資源管理系(所)] 期刊論文
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