电-Fenton法降解废水中苯乙酮

Degradation of Acetophenone in Wastewater by Electro-Fenton Process

以活性炭纤维为阴极,Ti/SnO2-Sb2O3为阳极,采用电-Fenton法处理苯乙酮废水,考察了Fe2+浓度、电流密度等对污染物降解过程的影响。结果表明,电-Fenton法可以破坏苯乙酮分子中的苯环结构,并使废水CODCr明显下降,同不投加Fe2+的传统二维电极处理技术相比,污染物的去除效率和电流效率均明显提高。电流密度对电-Fenton法处理苯乙酮废水的污染物去除影响较大:电流密度越高,污染物去除效率越高,但电流效率越低。在电流密度为10.0mA/cm2,Fe2+浓度为0.1mmol/L,初始pH为4.0的条件下,处理180min的废水CODCr去除率达58.69%,苯乙酮去除率达90%以上。

Electro-Fenton process with activated carbon fiber as the cathode and Ti/SnO2-Sb2O3 as the anode was used in the treatment of acetophenone wastewater.Effects of Fe2＋ concentration and electric current density on acetophenone degradation were investigated.It was indicated that the phenyl in acetophenone molecular could be destroyed by electro-Fenton process and chemical oxygen demand（CODCr）of the wastewater decreased significantly.Compared with traditional two-dimensional electrode process in which no Fe2＋ was added,the pollutant removal efficiency and current efficiency by electro-Fenton process were both higher.Current density has significant influences on the pollutant removal.Higher current density raised pollutant removal efficiency while lowering current efficiency.Under the conditions of electric current density 10.0 mA/cm2,Fe2＋ 0.1 mmol/L and initial pH 4.0,the removal efficiencies of CODCr and acetophenone in 180 min were 58.96% and above 90%,respectively.