Decomposition of two haloacetic acids in water using UV radiation, ozone and advanced oxidation processes
文献类型：期刊论文
| 作者 | Wang, Kunping ; Guo, Jinsong ; Yang, Min ; Junji, Hirotsuji ; Deng, Rongsen |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009-05-15 |
| 卷号 | 162期号:1页码:1243-1248 |
| 关键词 | Ozone Haloacetic acid Advanced oxidation process Ozonation Halegenated organics Ozone/UV radiation |
| 中文摘要 | The decomposition of two haloacetic acids (HAAs), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA), from water was studied by means of single oxidants: ozone, UV radiation: and by the advanced oxidation processes (AOPs) constituted by combinations of O(3)/UV radiation, H(2)O(2)/UV radiation, O(3)/H(2)O(2), O(3)/H(2)O(2)/UV radiation. The concentrations of HAAs were analyzed at specified time intervals to elucidate the decomposition of HAAs. Single O(3) or UV did not result in perceptible decomposition of HAAs within the applied reaction time. O(3)/UV showed to be more suitable for the decomposition of DCAA and TCAA in water among the six methods of oxidation. Decomposition of DCAA was easier than TCAA by AOPs. For O(3)/UV in the semi-continuous mode, the effective utilization rate of ozone for HAA decomposition decreased with ozone addition. The kinetics of HAAs decomposition by O(3)/UV and the influence of coexistent humic acids and HCO(3)(-) on the decomposition process were investigated. The decomposition of the HAAs by the O(3)/UV accorded with the pseudo-first-order mode under the constant initial dissolved O(3) concentration and fixed UV radiation. The pseudo-first-order rate constant for the decomposition of DCAA was more than four times that for TCAA. Humic acids can cause the H(2)O(2) accumulation and the decrease in rate constants of HAAs decomposition in the O(3)/UV process. The rate constants for the decomposition of DCAA and TCAA decreased by 41.1% and 23.8%, respectively, when humic acids were added at a concentration of 1.2 mg TOC/L. The rate constants decreased by 43.5% and 25.9%, respectively, at an HCO(3)(-) concentration of 1.0 mmol/L. (C) 2008 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000263370200091 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21656]  |
| 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 | Wang, Kunping,Guo, Jinsong,Yang, Min,et al. Decomposition of two haloacetic acids in water using UV radiation, ozone and advanced oxidation processes[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,162(1):1243-1248. |
| APA | Wang, Kunping,Guo, Jinsong,Yang, Min,Junji, Hirotsuji,&Deng, Rongsen.(2009).Decomposition of two haloacetic acids in water using UV radiation, ozone and advanced oxidation processes.JOURNAL OF HAZARDOUS MATERIALS,162(1),1243-1248. |
| MLA | Wang, Kunping,et al."Decomposition of two haloacetic acids in water using UV radiation, ozone and advanced oxidation processes".JOURNAL OF HAZARDOUS MATERIALS 162.1(2009):1243-1248. |
入库方式： OAI收割
来源：生态环境研究中心
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