Using cellulose of rice straw as raw material,glycidyl methacrylate as monomer,benzoyl peroxide as initiator,copolymer of straw cellulose grafted GMA was prepared by aqueous solution polymerization,and modified by polyethyleneimine(PEI).Cell-PGMA-PEI was obtained,and its structure was characterized by FT-IR.Under static condition,the effects of initial concentration,adsorption time and pH on the adsorption of Cr3+ and Zn2+ by Cell-PGMA-PEI were studied.The adsorption of Cr3+ by Cell-PGMA-PEI accorded with Langmuir equation,Freundlich equation can better fit the adsorption process of Zn2+,and the adsorption kinetics of both accorded with pseudo second-order kinetics model.
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