Decolorization of reactive brilliant red X-3B by heterogeneous photo-Fenton reaction using an Fe-Ce bimetal catalyst
文献类型：会议论文
| 作者 | Zhang, Yu ; Dou, Xiaomin; Liu, Jian; Yang, Min; Zhang, Liping; Kamagata, Yoichi
|
| 出版日期 | 2007 |
| 会议名称 | 2nd Japan-China Workshop on Environmental Catalysis and Eco-Materials |
| 会议日期 | OCT 23-25, 2005 |
| 会议地点 | Fukuoka, JAPAN |
| 关键词 | reactive brilliant red X-3B Fe-Ce catalyst photo-fenton reaction heterogeneous catalysis decolorization mechanism |
| 英文摘要 | Decolorization of reactive brilliant red X-3B was studied by using an Fe-Ce oxide hydrate as the heterogeneous catalyst in the presence of H(2)O(2) and UV. The decolorization rate was in the order of UV-Fe-Ce-H(2)O(2) > UV-Fe(3+)-H(2)O(2) > UV-H(2)O(2) > UV-Fe-Ce >= Fe-Ce-H(2)O(2) > Fe-Ce. Under the conditions of 34 mg l(-1) H(2)O(2), 0.500 g l(-1) Fe-Ce, 36 W UV and pH 3.0, 100 mg l(-1) X-3B could be decolorized at efficiency of more than 99% within 30 min. The maximum dissolved Fe during the reaction was l mg l(-1). From the fact that the decolorization rate of the UV-Fe-Ce-H(2)O(2) system was significantly higher than that of the UV-Fe(3+)-H(2)O(2), system at Fe(3+) = l mg l(-1), it is clear that the Fe-Ce functioned mainly as an efficient heterogeneous catalyst. UV-vis, its second derivative spectra, and ion chromatography (IQ were employed to investigate the degradation pathway. Fast degradation after adsorption of X-3B is the dominant mechanism in the heterogeneous catalytic oxidation system. The first degradation step is the breaking down of azo and C-N bonds, resulting in the formation of the aniline- and phenol-like compounds. Then, the breaking down of the triazine structure occurred together with the transformation of naphthalene rings to multi-substituted benzene, and the cutting off of sulphonic groups from the naphthalene rings. The last step includes further decomposition of the aniline structure and partial mineralization C of X-3B. (C) 2007 Elsevier B.V. All rights reserved. |
| ISSN号 | 0920-5861 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24732]  |
| 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 | Zhang, Yu,Dou, Xiaomin,Liu, Jian,et al. Decolorization of reactive brilliant red X-3B by heterogeneous photo-Fenton reaction using an Fe-Ce bimetal catalyst[C]. 见:2nd Japan-China Workshop on Environmental Catalysis and Eco-Materials. Fukuoka, JAPAN. OCT 23-25, 2005. |
入库方式： OAI收割
来源：生态环境研究中心
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