Kinetics and mechanism for omethoate degradation by catalytic ozonation with Fe(III)-loaded activated carbon in water
文献类型：期刊论文
| 作者 | Qiang, Zhimin ; Ling, Wencui ; Tian, Fang |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2013 |
| 卷号 | 90期号:6页码:1966-1972 |
| 通讯作者 | Qiang, ZM |
| 中文摘要 | The kinetics and mechanism for degradation of omethoate (OMT) by catalytic ozonation with Fe(III)-loaded activated carbon (Fe@AC) were investigated in this study with focus on identification of degradation byproducts. The rate constants of OMT reacting with ozone and hydroxyl radical ((OH)-O-center dot) were determined to be 0.04 and 5.3 x 10(8) M-1 s(-1) at pH 7.5 and 20 degrees C, respectively. OMT was predominantly degraded by (OH)-O-center dot in the catalytic ozonation with Fe@AC. The high-molecular-weight degradation byproducts identified were O,O,O-trimethyl phosphoric ester (TMP), pyrrolidin-2-one, N-methyl-2-sulfanylacetamide, 2-(methylthio)acetamide, O,O,S-trimethylthiophosphate (STMP), and N-methyl-2-(methylthio) acetamide. Besides, low-molecular-weight organic acids and inorganic anions were also detected and quantified, including formic, acetic and oxalic acids as well as nitrate, sulfate and phosphate ions. In the catalytic ozonation, TMP and phosphate were two major P-containing byproducts resulting from OMT degradation. The toxicity of OMT solution gradually decreased during the catalytic ozonation, indicating that Fe@AC is a safe catalyst for OMT removal by ozone in water. (c) 2012 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000315133400028 |
| 公开日期 | 2014-06-06 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7421]  |
| 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 | Qiang, Zhimin,Ling, Wencui,Tian, Fang. Kinetics and mechanism for omethoate degradation by catalytic ozonation with Fe(III)-loaded activated carbon in water[J]. CHEMOSPHERE,2013,90(6):1966-1972. |
| APA | Qiang, Zhimin,Ling, Wencui,&Tian, Fang.(2013).Kinetics and mechanism for omethoate degradation by catalytic ozonation with Fe(III)-loaded activated carbon in water.CHEMOSPHERE,90(6),1966-1972. |
| MLA | Qiang, Zhimin,et al."Kinetics and mechanism for omethoate degradation by catalytic ozonation with Fe(III)-loaded activated carbon in water".CHEMOSPHERE 90.6(2013):1966-1972. |
入库方式： OAI收割
来源：生态环境研究中心
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