Enhanced degradation of 2,4-dinitrotoluene by ozonation in the presence of manganese(II) and oxalic acid
文献类型：期刊论文
| 作者 | Xiao, Hua ; Liu, Ruiping ; Zhao, Xu ; Qu, Jiuhui |
| 刊名 | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
 |
| 出版日期 | 2008-05-01 |
| 卷号 | 286期号:2015-01-02页码:149-155 |
| 关键词 | catalytic ozonation hydroxyl radical DNT manganese ion ESR |
| 英文摘要 | Manganese catalytic ozonation of 2,4-dinitrotoluene (DNT) in the presence of oxalic acid was studied. The addition of manganese ion (Mn2+) or oxalic acid alone in ozonation process did not enhance DNT degradation, but the addition of Mn2+ coupled with oxalic acid accelerated degradation of DNT. The DNT degradation efficiency was influenced by carbonate in the catalytic ozonation process. Kinetics study showed that Mn2+ catalytic ozonation significantly promoted the decomposition of ozone. Experimental results of electron spin resonance (ESR) demonstrated that addition of Mn2+ and oxalic acid produced much hydroxyl radicals in catalytic ozonation system than that in single ozonation system. These results suggested that catalytic ozonation followed hydroxyl radical-type mechanism. Mn2+ promoted decomposition of ozone to produce hydroxyl radical and it was oxidized into manganese oxide. Manganese oxide was reduced into Mn2+ by oxalic acid, which is the key step of catalytic process. Based on above results, a cycle catalytic mechanism of Mn2+ was proposed. Intermediates were determined by HPLC and CC-MS, and they mainly included aromatic organics and aliphatic carboxylic acids. (C) 2008 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000256724800023 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22242]  |
| 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, Hua,Liu, Ruiping,Zhao, Xu,et al. Enhanced degradation of 2,4-dinitrotoluene by ozonation in the presence of manganese(II) and oxalic acid[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2008,286(2015-01-02):149-155. |
| APA | Xiao, Hua,Liu, Ruiping,Zhao, Xu,&Qu, Jiuhui.(2008).Enhanced degradation of 2,4-dinitrotoluene by ozonation in the presence of manganese(II) and oxalic acid.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,286(2015-01-02),149-155. |
| MLA | Xiao, Hua,et al."Enhanced degradation of 2,4-dinitrotoluene by ozonation in the presence of manganese(II) and oxalic acid".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 286.2015-01-02(2008):149-155. |
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。