Lately, several attempts have been made to involve agricultural waste as an abundant source for the design of ecological materials for environmental applications. In this pursuit, arundo donax biomass (ADS), carboxymethyl cellulose (CMC) and xanthan gum (Xth) were combined in presence of lauroyl sarcosinate surfactant to prepare a potential bioadsorbent for methylene blue dye removal from synthetic wastewater. CMC/Xth/ADS biocomposite was characterized using XRD, FTIR, SEM, EDX and TGA techniques. Various physico-chemical parameters including contact time, dye concentration, adsorbent dosage, pH, and temperature were explored to optimize the overall process. Adsorption equilibrium data were best fitted to Langmuir isotherm, with a maximum adsorption capacity of 48.31 mg g