Application of Box-Wilson Experimental Design Method for the Photocatalytic Degradation of Remazol Brilliant Blue R-A with Solar UV/TiO2/Fe(III)Processes

摘要

An advanced oxidation treatment,UV/TiO2/Fe(III)process,was applied to an azo dye,Remazol Brilliant Blue R-A,used in textile dyestuffs in the Turkish textile industry by using a solar photocatalytic reactor.A Box-Wilson statistical experimental design was used to determine the effects of oxidant dosage and flowrate in UV/TiO2/Fe(III)advanced oxidation process.Degradation of color removal and organic matter concentration of the dye have been evaluated.A strong dye solution(50 mg/l)was 98% decolorized after 8 hours of irradiation,and 54% reduction of the total organic carbon(TOC)was obtained.It has been found that the degradation rates increased until optimum values of TiO2 and Fe(III)concentrations,beyond which the reagents exerted an inhibitory effect.The degradation rate was also function of flowrate.