Efficacy and influencing factors of electrocatalytic degradation of m-cresol in wastewater by activated carbon fiber as three-dimensional electrodes
LIU Wei-jun1,2, DUAN Ping-zhou1, HU Xiang1, GAO Jian-jun2, ZHOU Fen-tao2
1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2. Shanxi Jinhuankeyuan Environmental Resources Technology Co., Ltd, Taiyuan 030024, China
The feasibility and efficiency of m-cresol removal with three different categories of activated carbon fibers (ACFs) as particle electrodes were investigated. The surface morphology of activated carbon fibers was examined by scanning electron microscopy (SEM). The pore structure and specific surface area of activated carbon fibers were studied by BET. The variety and number of surface functional groups of activated carbon fibers were characterized by temperature programmed desorption (TPD-Ms). It was found the activated carbon fibers were formed by cro ss binding of single bundle fibers structure with a large specific surface area (>1480m2/g) and diverse functional groups. Furthermore, influence of operating parameters was investigated including the effects of ACFs types, contact mode of ACFs and electrode, as well as initial pH. The electrochemical degradation results demonstrated that the excessive oxygen functional groups on the surface of ACFs might be adverse to the removal rate of pollutants. The electrooxidation efficiency of three-dimensional electrodes increases significantly with the decrease of pH, and different electrode contact modes also have great influence on the electrooxidation effect of three-dimensional electrode.
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LIU Wei-jun, DUAN Ping-zhou, HU Xiang, GAO Jian-jun, ZHOU Fen-tao. Efficacy and influencing factors of electrocatalytic degradation of m-cresol in wastewater by activated carbon fiber as three-dimensional electrodes. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(1): 164-169.
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