Przemysl Chemiczny, Vol.90, No.3, 452-458, 2011
Chitosan modified with a chelating complexing agent of a new generation as an alternative sorbent in removal of heavy metal ions
Chitosan was modified with methylglycinediacetic acid (MGDA) and used as sorbent for removing heavy Cu(II), Zn(II), Pb(II) and Cd(II) metal ions from aq. wins. at ion:MGDA mole ratio 1:1. The sorption efficiency increased with increasing metal ion conc. and with decreasing pH. The sorption kinetics was described by the pseudo 2(nd) order mechanism.