Electrochemical process combined with UV light irradiation for synergistic degradation of ammonia in chloride-containing solutions
文献类型：期刊论文
| 作者 | Xiao, Shuhu ; Qu, Jiuhui ; Zhao, Xu ; Liu, Hujuan ; Wan, Dongjin |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2009-03 |
| 卷号 | 43期号:5页码:1432-1440 |
| 关键词 | RuO(2)/Ti electrode Ammonia degradation Photoelectrochemical process Active chlorine radicals |
| 中文摘要 | An electrochemical process combined with ultraviolet light irradiation (UPE) using non-photoactive dimensionally stable anodes (DSAs) like RuO(2)/Ti and IrO(2)/Ti in the presence of chlorides was investigated for ammonia degradation. In this process, the in situ electrogenerated active chlorine and in situ photogenerated chlorine radicals were responsible for the high efficiency of ammonia degradation. More than 97% of ammonia was converted to nitrogen and a significantly synergistic effect was confirmed. Compared with the single electrochemical (E) and photochemical (P) process, the degradation rates of ammonia and the average current efficiencies (ACEs) of the UPE process increased by 1.5 and 1.7 times using RuO(2)/Ti and IrO(2)/Ti electrodes, respectively. on the basis of the linear voltammograms, Electrochemical impedance Spectra (EIS), UV-vis spectra, Electron Spin Resonance (ESR) analysis and a series of experiments designed, the synergistic mechanism was investigated. in addition, this unique process succeeded in transferring the reaction from the electrode surface to the bulk of the solution compared with the conventional photo-electrocatalytic (PEC) process. The loss of chloride decreased from 21.0% to 7.2% and the recycle of chloride was accelerated in the UPE process. Finally the effects of initial pH, current density and ammonia-nitrogen concentration were discussed. Results indicated that pH and ammonia concentration exerted little influences on the degradation rates and current density was the "rate-determining" factor. (C) 2009 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000264616300029 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21672]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Xiao, Shuhu,Qu, Jiuhui,Zhao, Xu,et al. Electrochemical process combined with UV light irradiation for synergistic degradation of ammonia in chloride-containing solutions[J]. WATER RESEARCH,2009,43(5):1432-1440. |
| APA | Xiao, Shuhu,Qu, Jiuhui,Zhao, Xu,Liu, Hujuan,&Wan, Dongjin.(2009).Electrochemical process combined with UV light irradiation for synergistic degradation of ammonia in chloride-containing solutions.WATER RESEARCH,43(5),1432-1440. |
| MLA | Xiao, Shuhu,et al."Electrochemical process combined with UV light irradiation for synergistic degradation of ammonia in chloride-containing solutions".WATER RESEARCH 43.5(2009):1432-1440. |
入库方式： OAI收割
来源：生态环境研究中心
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