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.
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