Removal of Heavymetals (Cr) From Aqueous Solution Using Industrial Waste
نویسنده
چکیده
Dolochar which is a solid waste generated by the sponge iron industries is a major concern worldwide. In this paper an attempt has been made to investigate the properties (i.e. physical and chemical) so as to reutilize it as absorbent to absorb the pollutants present in water. The adsorption behavior of dolochar using batch process has been studied to remove hexavalent chromium from synthetic waste water. The physical properties of dolochar such as specific gravity, void ratio, porosity, grain size, density and chemical properties such as chemical composition have been analyzed. Batch adsorption experiment have been conducted by varying adsorbent dose, adsorbate concentration, pH, particle size, time on removal of chromium of these metal ions. It was found that more than 100% of the removal was achieved under optimal condition. The experimental results obtained at various concentration (27±1oC) showed that the adsorption pattern on the dolochar have followed Langmuir and freundlich models. Kinetic of adsorption is found to follow pseudo-first order and second order reaction to perform the mechanism of adsorption. Keywords—Adsorption, Chromium removal, Dolochar, Density, specific gravity.
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