Efficiency of novel Fe/charcoal/ultrasonic micro-electrolysis strategy in the removal of Acid Red 18 from aqueous solutions

Acid-Red 18 is one of many azo dyes that are widely used in the textile industry. Wastewater effluent stream may contain untreated dyes that are toxic, carcinogenic, or mutagenic in character and are harmful to marine life. Degradation of Acid-Red 18 was investigated by a hybrid micro-electrolysis process that included iron (Fe) and Charcoal(C) under the influence of Ultrasonic waves (Fe/C/US). The highest removal efficiency by the system (98.86 %) was at pH 7, initial concentration of dye 25 mg/L, Fe/C concentration at 1:1 ratio of 10 g/L over 60 min. The Acid Red 18 mineralization amount was found to be 76.5 % under optimal condition and through Total Organic Carbon (TOC) analysis by (Fe/C/US). Thus, Fe/C/US system, used as an electrochemical oxidation process, has advantages such as high performance, lower cost, and effective, simple operation in eliminating and degradation of organic pollutants such as acid-red 18 from aqueous solutions.