Study on Adsorption Properties of Cellulose Based Hydrogels

Abstract

The hydrogel prepared from biomass can be used as the absorbent gel and the adsorbent for heavy metal ions. Cellulose based hydrogel CMC/P(AM-AMPS) was synthesized with sodium carboxymethyl cellulose (CMC) as raw material, acrylamide (AM) and 2-acrylamide-2-methylpropane sulfonic acid (AMPS) as grafting monomer through grafting and crosslinking reaction. The test results showed that the hydrogel had strong adsorption properties, and the swelling rate could reach 198.20 g/g in 2h; When the initial concentration of Cu2+ was 10 mg/L and the dosage of CMC/P(AM-AMPS) was 400 mg/L, the removal rate of Cu2+ could reach 91.2%, and the equilibrium adsorption amount could reach 22.80 mg/g.