KMS Chongqing Institute of Green and Intelligent Technology, CAS
| Activated carbon fiber (ACF) enhances the UV/EF system to remove nitrobenzene in water | |
| Zhao, Chun1; Si, Bin1; Mirza, Zakaria Ahmed1; Liu, Yuanyuan1; He, Xinlin1; Li, Junfeng1; Wang, Zhaoyang1; Zheng, Huaili1 | |
| 2017 | |
| 摘要 | Activated carbon fiber (ACF) was used to enhance the UV/Electro-Fenton (UV/EF) system to remove nitrobenzene (NB). Comparative removal of NB by ACF adsorption, electrolysis, and UV photolysis was investigated, which indicated ACF can significantly enhance the UV/EF (ACF) system to remove NB. By using ACF cathode, 98% of NB removal was achieved after 20 min, which was much higher than Ti cathode by 60%. The UV/EF (ACF) system was proved to have the feasibility of mineralization of nitrobenzene by the 90% of TOC removal after 5 h. ACF reuse experiments were carried, and the results showed ACF cathode could be reused for successive 4 runs with just 5% declination of NB removal. The impacts of several key influence factors (current intensity, electrolyte, and O-2 flux) were explored. Three different kinds of ACF (ACF(0): original ACF; ACF(N): treated by ammonia; ACF(H): treated by nitric acid), methanol, tert-butyl (TBA) alcohol, phenol, and catalase were involved in the system to study the mechanism of the UV/EF (ACF) system. The results showed the combination of ACF and the UV/EF system could significantly improve the H2O2 production and NB removal. Finally, the comparison of the electrical energy per order (EE/O) values between the UV/EF (ACF) and UV/EF (Ti) system showed that ACF can significantly improve the current efficiency of the UV/EF system. (C) 2017 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.seppur.2017.05.030 |
| 发表期刊 | SEPARATION AND PURIFICATION TECHNOLOGY
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| ISSN | 1383-5866 |
| 卷号 | 187页码:397-406 |
| 收录类别 | SCI |
| WOS记录号 | WOS:000409150700042 |
| 语种 | 英语 |
