Optimization of Modified Peanut Shell Cellulose by Grafting Copolymerization
Peanut shell is rich in cellulose,so it is a good source for preparing cellulose adsorption materials.In this paper,cellulose from pea-nut shell was extracted by sodium hydroxide-sodium chlorite method,and the peanut shell cellulose was grafted with acrylamide as monomer and ammonium cerium nitrate as initiator.The amount of Cd2+ in the adsorption solution was used as the index to investigate the effects of the a-mount of acrylamide,ammonium cerium nitrate,reaction temperature and reaction time on the modification effect.The results showed that the modified peanut shell cellulose obtained by adding 6 g acrylamide monomer and 0.3 g ammonium cerium nitrate to the graft copolymerization sys-tem had the best adsorption effect on Cd2+ in aqueous solution at 55℃for 4 h,and the adsorption capacity was 13.741 mg/g.On this basis,optimization of the adsorption process will further improve the adsorption rate and expand the application range of waste peanut shells.
grafting copolymerizationpeanut shell celluloseoptimization of modification conditions
万方数据
维普
