Optimization studies on electrochemical and biosorption treatment of effluent containing nitro benzene by RSM
Paper Details
Optimization studies on electrochemical and biosorption treatment of effluent containing nitro benzene by RSM
Abstract
A novel process combining Electrochemical Oxidation and Biosorption treatment was presented for
Nitrobenzene abatement. The electrochemical oxidation was investigated batch-wise in the presence of NaCl (2gL-1) electrolyte with lead as anode and copper as cathode electrodes. The conditions were optimized using response surface methodology (RSM), which result in 76.4% reduction of COD was found to be maximum and the optimum conditions were satisfied at current density 3.56 A dm-2, time 3 hours, flow rate 40 L hr -1, volume 9 L occur at minimum power consumption of 30.3 kWhr / kg COD. It is followed by biosorption treatment in the presence of biosorbents such as maize and rice stems at 15 g L-1. From this study it was observed that the maximum % of COD reduction was 97.7 % for the optimized time 4 days and volume 6 L for pretreated effluent containing nitrobenzene.
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