【摘要】 以具有高比表面积的活性碳纤维作为阴极,通过电芬顿反应降解水中微囊藻毒素(MCRR,MCLR)的电化学方法系统考察了电流密度、pH值和Fe2+浓度等因素对微囊藻毒素降解效果的影响.实验结果表明,在Fe2+浓度为1·0mmol/L和电流密度为6·6mA/cm2条件下,电化学处理60min,MCRR(8·81mg/L)去除率为75%,MCLR(6·36mg/L)去除率为94%.证明过氧化氢可以通过电化学还原在活性碳纤维阴极表面高效产生,微囊藻毒素可被高效降解去除.更多还原

【Abstract】 The degradation of Microcystins(MC-RR, MC-LR) via electro-Fenton reaction using the activated carbon fiber(ACF) felt cathode with a large surface area was experimentally investigated. The effect of applied current, initial pH values of solution and Fe+{2+} ion concentration were discussed in detail. The results show that 75% of MC-RR and 94% MC-LR were eliminated after 60 min electrolysis under the operation conditions of 6.6 mA/cm+2 current density, 1.0 mmol/L Fe+{2+} at pH=3. The results indicate that H-2O-2 could be effectively electrogenerated from O-2 reduction on the ACF felt cathode and microcystins could be rapidly eliminated.更多还原