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Degradation of p-aminophenol wastewater using Ti-Si-Sn-Sb/GAC particle electrodes in a three-dimensional electrochemical oxidation reactor |
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| Authors: | Na Zhang Jiaqi Bu Yong Meng Jia Wan Lu Yuan Xin Peng |
| Institution: | 1. College of Chemistry and Chemical Engineering of Hunan Normal University, Changsha, 410081 China;2. College of Chemistry and Chemical Engineering of Hunan Normal University, Changsha, 410081 China
National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Changsha, 410081 China Key Laboratory of Sustainable Resources Processing and Advanced Materials of Hunan Province College, Changsha, 410081 China Research Center of Resource Recycling Complex Technology, Hunan Normal University, Changsha, 410081 China Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Hunan Normal University), Ministry of Education, Changsha, 410081 China |
| Abstract: | In this study, Ti-Si-Sn-Sb/GAC particle electrodes were prepared by sol–gel method. The particle electrodes were characterized by SEM, XRD, EDX, and BET then used to carry out three-dimensional (3D) electrocatalytic oxidation degradation on simulated refractory p-aminophenol (PAP) wastewater. The effects of initial pH, cell voltage, aeration flow rate and initial PAP concentration on degradation experiments were investigated. Under the optimal conditions, the PAP and COD removal rates were 89.45% and 75.17% respectively. In addition, the possible degradation mechanism of PAP was further investigated by UV–Vis and HPLC. Finally, it was found that the Ti-Si-Sn-Sb/GAC particle electrodes with high catalytic activity and excellent stability could significantly improve the PAP wastewater removal efficiency. |
| Keywords: | degradation electrochemical oxidation granular activated carbon P-aminophenol wastewater treatment |