微波辅助活性炭催化硫酸根自由基处理苯酚废水

Degradation of phenol wastewater by microwave-activated carbon in catalyzing sulfate radical

利用微波及活性炭共同作用促进K_2S_2O_8产生硫酸根自由基降解苯酚废水,通过改变反应时间、活性炭的投加量、K_2S_2O_8的投加量、微波的消解功率以及pH,对比反应前后苯酚浓度及COD的变化,确定该体系反应的最佳条件。研究表明,在微波功率560 W、辐射5 min、活性炭的投加量0.17g、m(K2S2O8)/m(苯酚)=0.5、pH=4时,200mg/L体积为30mL的苯酚去除率达到86%,COD去除率达到85%。

Activated carbon and microwave were used together to promote KzSzO8 degradation of phenol wastewater. The optimal conditions were microwave power of 560 W, radiation time of 5 rain, AC dosage of 0.17 g, m（K2S2O8）/rn（phenol）=0.5 at pH 4. Under such conditions, phenol （200 rag/L, 30 mL） and COD degradation rate could reach to 86% and 85%, respectively.