Abstract
An attempt was made to modify zeolite so as to find use as ion-exchange material for the removal of copper ion from industrial wastewaters. Large pore Hβ zeolite was initially modified with phosphoric acid and further treated with aqueous NaHCO 3 solution to obtain the PNa 2 -β. The prepared PNa 2 - β was characterized by XRD, BET Surface area, SEM and AAS techniques. The sorptive removal of copper ion from aqueous solutions using modified - β zeolites was investigated. The PNa 2 - β zeolite showed higher sorption capacity than Na- β zeolite. It is because of the exchangeable Na + ions being doubled in the PNa 2 - β compared to the Na- β zeolite. Equilibrium data were fitted to linear Langmuir and Freundlich models while the kinetic data were represented by pseudo-first order and pseudosecond order kinetic models.
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