Studies on synthesis and adsorption roperites of chitosan cross-linked by glutaraldehyde and Cu(II) as template under microwave irradiation

摘要

A series of cross-linked chitosan resins have been synthesized by forming chitosan coordination of Cu(II) as template in dilute acetic acid solutions under microwaves irradiation, then reacting the Cu(II)-chitosan complex with glutaraldehyde as cross-linking agent under microwave irradiation, and finally removing off the Cu(II0 with dilute acid. The adsorption capacity and selectivity of the cross-linked chitosan for Cu~(2+), Ni~(2+), and Co~(2+) have also been investigated. The experimental results show that these resins obtained have better adsorption capacity for Cu~(2+) than Ni~(2+) and Co~(2+), very good stability and reusability in acidic solutions.