Published Paper Details:

Distillery spent wash is one of the most serious environmental problems since it is the undesirable residual liquid waste produced during the ethanol production process. The ever-increasing production of distillery spent wash and the strict regulations for its disposal have prompted the need for finding creative solutions to handle this effluent effectively and inexpensively. The present study suggested that electrochemical method as suitable substitutes for treating distillery spent wash. The experimental study was carried out using the electro-Fenton (EF) method to remove COD and colour from distillery spent wash. Experiments were also carried out to determine the effects of various process parameters, such as reaction time, pH, voltage, and various oxidant doses, on the removal effectiveness of COD and colour. The various affecting parameters were optimized using the RSM (Box-Behnken) model, and the outcomes were expressed as a percentage COD and colour reduction. The maximal COD and colour removal efficiency for the EF technique were 35.31% and 88.55%, respectively. The optimum conditions were a pH of 4, a dose of 25 ml/L of H2O2, a voltage of 3 volts, and a reaction period of 55 minutes. Following the application of EF, the GI values of radish and fenugreek were increased to 78.61% and 49.53% respectively. The results obtained showed a reduction in phytotoxicity of the treated effluents.