Investigation Of Pulsed Electrochemical Process For The Treatment Of Wet Coffee Processing Wastewater

Abstract

Electrochemical technology for treating wastewater provide number of advantages over traditio nal treatment processes, including environmental compatibility, energy efficiency, adaptability, safety, selectivity, ease of scale up, mechanization, cost effectiveness, and excellent settling and filterability. In this study, the pulsed electrochemical method is a hopeful treatment strategy because of its high effectiveness, cheap and speedy outcomes. The aim of this research is to inves tigate the effect of independent variable to remove contaminants from wet coffee processing indu stry. The independent variables such as pH, time, electric current, and electrolyte dosage on the removal efficiency of Chemical Oxygen Demand (COD), % Color, % Turbidity, phosphate, nitrate, and power consumption were investigated by the pulsed electrochemical process treatment method and the potential of these methods was obtained as COD (98.75 %), color (99.92 %), turbidity (99.00 %), phosphate (99.02 %), and nitrate (98.83 %), with a power consumption of 0.971 kWh/m3 has a high removal efficiency depending on the result. The optimum values for removal was obtained using response surface methodology (RSM) Vis central compost design (CCD): pH 7, electrolyte dosage of 0.75g, electrolysis time of 45min, and current of 0.45Amp). Analysis of variance (ANOVA) with 95 percent confidence limits was used to determine the significance of independent variables and their interactions. As a result, the pulsed electrochemical process (PECP) with CaCl2 as an electrolyte is an effective treatment technique for pollutant removal, and it was discovered that increasing the electrolyte charge from +1 to +2 increases pollutant removal and decreases voltage, which was effective for pollutant removal. Pulsed electrochemical process is an effective treatment particularly to wet coffee wastewater.