Interaction of lignosulfonate with certain metal ions

The reaction of lignosulfonate with the Co2+, Ni2+, and Cu2+ ions has been studied by the methods of gel chromatography, potentiometric titration, and UV spectroscopy. Lignosulfonate forms polymer-metal complexes with the metal ions over a wide pH range. In this process the size of the macromolecule scarcely changes, thanks to the reticular structure of the… CONTINUE READING