Lead, Zinc Removal from Industrial wastewater using Syrian Natural Zeolite /phillipsite/ from southern Syria


Abstract in English

The study was carried out on the sorption of heavy metals (Pb+2, Zn+2) under static conditions from single- and multicomponent aqueous solutions by Syrian Zeolite mineral extracted from south Syria. The removal has an ion-exchange nature and consists of three stages: the adsorption on the surface of microcrystals, the inversion stage, and the moderate adsorption in the interior of the microcrystal, The study showed that equilibrium time is 6 hours, and The slight difference between adsorption capacity of the Zeolite toward lead, zinc from single- and multicomponent solutions may testify to individual sorption centers of the zeolite for each metal. The maximum sorption capacity toward pb2+ is determined as 33.89 mg/g at an equilibrium concentration of 261.07 mg/L and toward Zn+2 as 29.18 mg/g at 309.818 mg/L. Langmuir and Freundlich Adsorption Isotherms were used to evaluate natural zeolite adsorption performance for Lead, Zinc. These Isotherms were able to provide suitable fit with experimental data, the factor R2 ranged between 0.95 – 0.99, with better fit to Langmuir Isotherm.

References used

(Korkuna, O., Leboda, R., Skubiszewska-Zieba, J., Vrublevs’ka, T., Gun’ko, V.M., Ryczkowski, J., Structural and physicochemical properties of natural zeolites: clinoptilolite and mordenite. Microporous and Mesoporous Materials, 87, 243 – 254. (2006
(Trgo, M. and Peric, J., The effect of concentration and pH on selectivity of ion exchange in system natural zeolite – Na+/Zn2+ aqueous solutions. Faculty of Chemical Technology, University of Split, Teslina 10/V 21000 Split, Croatia.(2005
Bogdan Bogdanov, Dimitar Georgiev, Krasimira Angelova, Krasimira Yaneva : Natural zeolites: clinoptilolite BULGARIA Review . International Science conference. 4th - 5th June 2009, Stara Zagora

Download