Characteristic transformation of humic acid during photoelectrocatalysis process and its subsequent disinfection byproduct formation potential
文献类型：期刊论文
| 作者 | Li, Angzhen ; Zhao, Xu ; Liu, Huijuan ; Qu, Jiuhui |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2011-11-15 |
| 卷号 | 45期号:18页码:6131—6140 |
| 中文摘要 | In this study, degradation of humic acid (HA) via photoelectrocatalysis (PEC) process and corresponding disinfection byproduct formation potential (DBPFP) were investigated. Particularly, structure variation and subsequent DBPFP of HA during PEC treatment were correlated. The PEC process was found to be effective in reducing dissolved organic carbon concentration by 75.0% and UV absorbance at 254 nm by 92.0%. Furthermore, 90.3% of haloacetic acids formation potential and 89.8% of trihalomethanes formation potential were reduced within 180 min. Based on molecular weight and resin fraction results, it was demonstrated that HA with large aromatic, hydrophobic and long aliphatic chain organics were transformed into small and hydrophilic organics during PEC process. Combined with the fourier transform infrared spectra and (13)C nuclear magnetic resonance spectra analysis of HA fractions, it was concluded that phenolic hydroxyl and conjugated double bonds tended to be attacked by hydroxyl radicals during PEC process; these groups were reactive with chlorine to produce disinfection byproducts (DBP), especially trihalomethane and trichloroacetic acid. By contrast, amino, carboxyl and alcoholic hydroxyl groups were relatively difficult to be oxidized during PEC process; these groups had the potential to form dichloroacetic acid during chlorination. Results of these studies confirmed that PEC process was a safe and effective technique to decrease DBP formation significantly in water treatment plant. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000296826200031 |
| 公开日期 | 2012-10-15 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/6975]  |
| 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 | Li, Angzhen,Zhao, Xu,Liu, Huijuan,et al. Characteristic transformation of humic acid during photoelectrocatalysis process and its subsequent disinfection byproduct formation potential[J]. WATER RESEARCH,2011,45(18):6131—6140. |
| APA | Li, Angzhen,Zhao, Xu,Liu, Huijuan,&Qu, Jiuhui.(2011).Characteristic transformation of humic acid during photoelectrocatalysis process and its subsequent disinfection byproduct formation potential.WATER RESEARCH,45(18),6131—6140. |
| MLA | Li, Angzhen,et al."Characteristic transformation of humic acid during photoelectrocatalysis process and its subsequent disinfection byproduct formation potential".WATER RESEARCH 45.18(2011):6131—6140. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。