Internal Electrolysis Intensified by Microwave for the Treatment of Nitrobenzene – Containing Wastewater

Abstract

Treatment of nitrobenzene-containing wastewater was carried out by iron-carbon internal electrolysis and microwave and its degradation mechanism was investigated. The parameters is found in the process of treating nitrobenzene-containing wastewater. The experimental results showed that the microwave intensified the internal electrolysis effect of iron-carbon and the existence of iron was beneficial to the regeneration of activated carbon. Under the optimized electrolysis conditions as follows: iron dosage was 175g, molar ratio of Fe to C was 3, pH was 3, microwave power was 640W, irradiation time was 4 min and aeration amount was 2.5L/min, the removal rates of CODcr, chroma and turbidity were 94.7 %, 95.6 % and 90.3 %, respectively.