Solar photo-assisted electrochemical peroxidation process for the sustainable treatment of tannery industry wastewater

Abstract Tannery wastewater is a complex mixture of organic and inorganic components from various processes with high concentrations Cr, BOD, COD, TDS, strong colour pH. The goal the present work was to determine optimal solar photo-assisted electrochemical peroxidation process (SPECP) experimental conditions for treatment tannery wastewater. Experiments were conducted in bench-scale stirred tank SPECP reactor 5 L iron plates as anode cathode contact effective area 218 cm2. In at conditions, yielded 97% 98% 92% chromium (III) removal after 60 min 15 mA/cm2. improved biodegradability (BOD5/COD) 0.4 0.6 min. These results showed that industries could be treated up level minimal national standards India waste disposal; COD=90 mg/L, BOD=30 mg/L (III)=1.2 time operating cost best economic condition maximum degradation $8.2/m3.