Kinetics and Efficiency Analysis of Electrochemical Oxidation of Phenol: Influence of Anode Materials and Operational Conditions
Kinetics and Efficiency Analysis of Electrochemical Oxidation of Phenol: Influence of Anode Materials and Operational Conditions
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苯酚电化学氧化的动力学和效率分析：阳极材料和操作条件的影响
DOI：
10.1002/ceat.201000192
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发表时间：
2011-02-01
影响因子：
2.1
通讯作者：
Li, Xiao-Yan
中科院分区：
文献类型：
--
作者：
Cui, Yu-Hong;Feng, Yu-Jie;Li, Xiao-Yan
研究了操作参数和阳极材料对苯酚电化学氧化降解动力学、矿化电流效率和能耗的影响。苯酚消除遵循伪一级动力学在大多数情况下，除了Ti/RuO 2阳极与苯酚浓度为500毫克L-1，其中观察到伪零级动力学。Ti/Sb-SnO 2阳极的总有机碳去除遵循伪一级动力学，而Pt和Ti/RuO 2阳极的伪零级动力学相反。对于某一阳极，较高的电流或电压输入导致较高的反应速率。采用Ti/Sb-SnO 2阳极，获得了最高的电流效率和最低的能耗，但由于有机物的还原，随着反应时间的延长，电流效率迅速降低（能耗增加）。
The influence of operational parameters and anode materials on degradation kinetics, mineralization current efficiency, and energy consumption for electrochemical oxidation of phenol was studied. Phenol elimination follows pseudo-first-order kinetics in most cases except for the Ti/RuO2 anode with a phenol concentration of 500 mg L–1, where pseudo-zero-order kinetics is observed. The total organic carbon removal by a Ti/Sb-SnO2 anode follows pseudo-first-order kinetics in contrast to pseudo-zero-order kinetics by Pt and Ti/RuO2 anodes. For a certain anode, a higher current or voltage input results in a higher reaction rate. With a Ti/Sb-SnO2 anode, the highest current efficiency and the lowest energy consumption are obtained, but the current efficiency decreases (increases for energy consumption) quickly as the reaction is prolonged due to the reduction of organics.