application of clinoptilolite composites in removal of Zn from waste water

industrial wastewater and sewage environmental pollution is increasing in the world. scientists have searched on several methods to remove this contamination, one of these methods is adsorption of heavy metals from aqueous solutions. economicaly, researchers are looking for cheap and low cost materials such minerals. One of these mineral materials is zeolite. zeolite adsorption can be increased by add it into the composite system. So in this study we tried to produce a zeolite based composite for adsorption of zinc which is found used in industrial waste water. In this research several composites were studied, among which the zeolite / oxalate composite has the best results with an adsorption percentage of 89% and capacity of adsorption of 100 mg / g. these results adopted very well with the results of isotherm models including Langmuir, Freundlich, Tamkin and Dubinin Radushkevich. Also, the energy of adsorption was calculated using the model of Dubinin Rodashvich (D-R) 8.45 kJ / mol