A Study on Treatment of Nitrobenzene Wastewater with Electrolysis

In the study,the high efficiency electrodes suitable for treating nitrobenzene wastewater were screened out for the purpose of improving electrolysis treatment efficiency,reducing the cost,and being easy to realize industrialization.The determining factors and the reaction mechanisms of treatment on simulated nitrobenzene wastewater by the electrolysis method were investigated.The results of experiments showed that in an iron electrode reactor,the removal efficiency of nitrobenzene compounds in wastewater could be over 90% when the distance of electrodes is 5 mm,and the current density is 10 mA/cm~(2), and the concentration of sodium sulfate is 1.5 g/L,and the ratio of water to board is 12 m~(-1),and the electrolytic time is 30 minutes.During the process of the reaction,78% nitrobenzene was oxidized,and the other 22% nitrobenzene was deoxidized and was converted into biodegraded and micro-toxic aniline.