Heterogeneous Fenton-like degradation of 4-chlorophenol using iron/ordered mesoporous carbon catalyst |
| |
| Authors: | Feng Duan Yuezhu Yang Yuping Li Hongbin Cao Yi Wang and Yi Zhang |
| |
| Institution: | National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;School of Chemical and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, China;National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China |
| |
| Abstract: | Ordered mesoporous carbon supported iron catalysts (Fe/OMC) were prepared by the incipient wetness impregnation method and investigated in Fenton-like degradation of 4-chlorophenol (4CP) in this work. XRD and TEM characterization showed that the iron oxides were well dispersed on the OMC support and grew bigger with the increasing calcination temperature. The catalyst prepared with a lower calcination temperature showed higher decomposition efficiency towards 4CP and H2O2, but more metals were leached. The effect of different operational parameters such as initial pH, H2O2 dosage, and reaction temperature on the catalytic activity was evaluated. The results showed that 96.1% of 4CP and 47.4% of TOC was removed after 270 min at 30°C, initial pH of 3 and 6.6 mmol/L H2O2. 88% of 4CP removal efficiency was retained after three successive runs, indicating Fe/OMC a stable catalyst for Fenton reaction. 4CP was degraded predominately by the attack of hydroxyl radical formed on the catalyst surface and in the bulk solution due to iron leaching. Based on the degradation intermediates detected by high performance liquid chromatography, possible oxidation pathways were proposed during the 4CP degradation. |
| |
| Keywords: | ordered mesoporous carbon calcination temperature hydrogen peroxide hydroxyl radical heterogeneous Fenton |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |
|
