Dye effluents discharged from different industries causes series damage to aquatic animals asrnwell as human beings by mutagenic and carcinogenic effects. Thus, the effluents needs to berntreated before discharged to the environment using advanced oxidation process. TiO2 supportedrnbentonite composite was used in the photocatalytic discoloration of dyes from wastewater i.e.,rnmethyl orange (MO). During usage of the composite as a photocatalyst for dye removal,rnphysiochemical characteristics and effect of synthesis and photocatalytic parameters wererninvestigated using Box-Behnkon Design response surface methodology. Characterization of therncomposite catalyst XRD analysis revealed that, the composite catalyst contains bentoniterncomponent (montmorillonite, quartz and feldspar) and TiO2 components (anatase and rutile). Therncrystal size of raw bentonite and composite were 24.73nm and 53.43nm respectively. In therndesign of experiment, the efficient catalyst was selected based on its dye removal efficiency viarnnumerical optimization. Calcination temperature 400rnC, calcination time 2h and TiO2 tornbentonite ratio 0.2 were selected for 96.54% removal efficiency. Also for photocatalyticrnexperiment dye concentration 10mg/L, catalyst dose 1.5g/L and UV irradiation time 2h gavern94.88% removal efficiency. The study justified that, composite photocatalyst titanium dioxidernsupported with bentonite has many advantages such as improve photocatalytic efficiency,rnrecycling efficiency of the catalyst, improves the recovery rate, save the cost of treatment andrnimproves the light absorption efficiency.