Electrochemical oxidation of reactive blue 221 based on fenton's process

Abstract

TOC and color removal efficiency of Reactive Blue 221 during Fenton's process was tried to be enhanced by the incorporation of direct current, ultraviolet irradiation and TiO2 addition. Experiments were done at optimum Fenton oxidation conditions. Almost 100% color was effectively removed within 15 minutes during all applied conditions. TOC removal efficiency of Fenton's process was increased from 42% to 77.6% by applying direct current and aeration to the reaction medium. Ultraviolet irradiation and the addition of TiO2 as a catalyst did not contribute significantly on percent TOC removal due to low current density, low catalyst/dye ratio and high strength intermediate compounds. The application of direct current with 5 mA along with aeration to Fenton's reaction media resulted in the most efficient oxidation of 250 mgL-1 Reactive Blue 221 containing solution in terms of percent color and TOC removal. © by PSP.