Solid phase grafting preparation of SCB-g-MMA and its adsorption property

The solid phase grafting product methyl methacrylate grafting sugarcane bagasse (SCB-g-MMA) was prepared by the methyl methacrylate (MMA) grafted sugarcane bagasse (SCB) surface after alkali treatment through solid phase grafting method. And its structure was characterized and analyzed by XRD, FTIR, ¹³C NMR, SEM and Brunauer-Emmett-Teller (BET) methods etc. Then the SCB-g-MMA was applied to adsorb methylene blue (MB) and adsorption property investigation was carried out. The results show that when the initial concentration of MB is 50-400 mg/L, pH value of aqueous solution is 6-12, dosage of adsorbent is more than 10 g/L and adsorption time is more than 40 min, the removal efficiency of MB by SCB-g-MMA is 99% at room temperature. And when the dosage of adsorbent is 2.5 g/L, the adsorption capacity of MB is 97.3 mg/g. In addition, the adsorption kinetics and the adsorption isotherm of SCB-g-MMA for MB are more fitted to the pseudo-second-order kinetic equation and Freundlich isotherm adsorption model, respectively.