Vanadate ions Removal by Way of Aminoquinoid Redox Polymers

Sorption of vanadate ions from solutions of ammonium and sodium metavanadates has been researched, studied and analyzed by way of polarography. Aminoquinoid redox polymers based on tetrachloro-p-benzoquinone and aliphatic polyamines, such as polyethyleneimine and aminated polyvinyl chloride (APVC), were used as adsorbents. Due to the fact that polymers contain within their structure, such groups as >C=O, >NH, >N-, and C-Cl, they show, in addition to redox capacity, high sorption features with respect to various metal ions. The process has been analyzed subject to solution concentration, pH and sorption duration. It appears that redox polymers based on polyethyleneimine are the most promising ones.