三维电极/电-Fenton法降解苯酚
Degradation of phenol by three-dimensional electrode/electro-Fenton system
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摘要: 采用电-Fenton耦合三维电极法处理苯酚模拟废水，研究了活性炭作为第三电极的三维电极体系中苯酚的去除效果，重点考察了常温下初始pH值、电流强度、Fe2+浓度等因素对苯酚降解的影响。结果表明：在常温下，曝气速率20 L/min，初始pH=3，电流强度为0.3 A/m2，Fe2+浓度为0.1 mmol/L，反应时间60 min时，废水的苯酚的氧化降解率为91%，COD去除率为64%。在此条件下，三维电极/电-Fenton表现出较强的氧化能力，具有较好的去除效果，可应用于含苯酚废水的处理。Abstract: The electro-Fenton method which coupled with a third electrode was used to treat simulated wastewater of phenol. The oxidation effect of phenol in the modified dual graphite electrodes system in which columnar activated carbon was delivered as the third electrode was studied， and the influences of initial pH， current intensity， and Fe2+ concentration were investigated at normal temperature. The results showed that when the conditions were controlled as follow: air flow rate of 20 L/min， initial pH=3，current intensity of 0.3 A/m2， and Fe2+ concentration of 0.1 mmol/L， reaction time of 60 minutes， the removal efficiency of phenol and COD could reach at 91% and 64%， respectively. Under these conditions， oxidation effect of phenol wastewater could be enhanced by third-dimensional electrode and achieved a good performance. So， it was suggested to be employed in the treatment of phenol wastewater
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Key words:
- electro-Fenton /
- three-dimensional electrode /
- activated carbon /
- phenol
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