REMOVAL OF COPPER IONS FROM INDUSTRIAL WASTEWATER USING WALNUT SHELLS AS A NATURAL ADSORBENT MATERIAL

This study aims to remove copper ions from solution of the simulated wastewater using walnut shells as a natural adsorbent material in batch adsorption system. Effects of experimental parameters such as pH, contact time and adsorbent dose at different initial concentrations on the adsorption efficiency have been studied. A set of experiments have been done in order to achieve the best conditions for the highest removal efficiency which was 79.54 %. The experimental data were fitted with Langmuir and Freundlich isotherm models to determine adsorption isotherm parameters. Kinetic adsorption of experimental data was obtained as a function of time by using pseudo-first and the pseudo-second order kinetic models. FTIR analysis of dry walnut shells have been carried out, in order to find out which functions are responsible for adsorption of copper ions. The abstract will be written in italics(10pts), centered left - right 1cm with Format - Paragraph.