Multi-component sorption of Pb(II), Cu(II) and Zn(II)\ud onto low-cost mineral adsorbent.

Murari , Prasad
Huan, yanXu
Sona , Saxena

Publication date

January 2008

Publisher

ELSEVIER

Abstract

Multi-component sorption studies were carried out for attenuation of divalent heavy metal cations (Pb2+, Cu2+ and Zn2+) by a low-cost mineral adsorbent from the aqueous solution. Kinetic and equilibrium batch-type sorption experiments were conducted under variable conditions for multicomponent using low-grade (<12%P2O5) phosphate rock. Percentage of multiple heavy metal species removal increases with decreasing initial metals concentration and particle size. The equilibrium data were well described to a lesser extent by Freundlich model but Langmuir model seemed\ud to be more appropriate with the fixation capacity obtained at room temperature for Pb2+, Cu2+ and Zn2+ was 227.2, 769.2 and 666.6 �mol g−1, respectively. Two simple kinetic model...