This document summarizes research on using magnetic nanoparticle-impregnated wheat straw (Fe3O4-MWS) for removing methylene blue dye from aqueous solutions. Key findings include: - Fe3O4-MWS was synthesized and characterized using SEM, XRD, FTIR. SEM showed nano-Fe3O4 well dispersed on wheat straw. XRD and FTIR confirmed nano-Fe3O4 loading. - Adsorption tests examined the effects of parameters like contact time, dye concentration, adsorbent dosage and pH. Pseudo-second order kinetics and Sips isotherm model best fit the data. - Maximum adsorption capacity was