The purpose of the study is to investigate the decolorization of textile dye effluent (maximum wavelength = 540nm) with acid treated sugarcane bagasse using the factorial design of experiments. Two level of process variables namely dilution percentage (10 and 50%), adsorbent dosage (2 and 8 mg/dm 3 ), initial pH (2 and 8) and agitation speed (50 and 200 rpm) were considered in the factorial design of experiments. The regression coefficients, student t-test, residual plot were performed in order to examine the fitness of experimental data. Finally, the interaction among the process variables and main effects on % color removal and % COD removal were determined.