Removal of Pb( ii ) and Cd( ii ) from wastewater using arginine cross-linked chitosan–carboxymethyl cellulose beads as green adsorbent

for Pb(ii) ions Cd(ii) ions, respectively. For the recovery and the regeneration after the one use of the beads, several adsorption-desorption cycles were carried out to check the reusability and recovery of both the metal ion and the adsorbent without the loss of maximum adsorption efficiency.