Removal of Cadmium from Aqueous Solution by Sudanese Natural Zeolite

ABSTRACT Zeolite have been increasingly used in many application areas such as industry, agriculture, environmental protection and even medicine. The overall goal of this work is to test the efficiency of natural zeolite as a filtering media for treating of Cadmium in water and study effect of concentration on efficiency of removal. The possibility of using natural Sudanese zeolite has been investigated for the removal of Cadmium as a model component of heavy metals. Batch processes experiments, using aqueous solutions under parameters have been tested , different parameters have been considered, such as metal ion concentration, pH and temperature. Zeolite characterization has been investigated. The metal concentration by batch filtration were found to have significant effect on sorption of ion by zeolite. The equilibrium isotherm data of metal –zeolite were represented by Langmuir and Freundlich isotherm models, sorption studies conducted at various pH values show that optimum removal is achieved when operating at pH between 2-4. It is concluded that treated Sudan zeolite can be used for water treatment