Selective separation of V(IV) from its solutions using modified cellulose

Abstract

Modified cellulose bearing iminoacetate functionality was prepared through modification of cellulose with glycidyl methacrylate (GMA) then leucine (CGL). Modified cellulose obtained was investigated by FT-IR, TGA, SEM, and BET measurements. Modified cellulose showed powerful uptake capacities toward V(IV) ions from its aqueous solutions using batch technique. The maximum uptake capacity toward V(IV) ions at 25 °C was 54 mg/g with relatively fast kinetics. Adsorption isotherms, and kinetic and thermodynamic parameters of the adsorption process were obtained and analyzed. Selective separation of V(IV)ions from a mixture containing U(VI) ions was achieved. Regeneration of the spent resin was tested using 0.2 M H₂SO₄ with up to 95% recovery percentage.

Graphical Abstract

Keywords:

• Adsorption
• cellulose
• vanadium
• uranium
• selectivity