Development Adsorption Technology for Removal of Arsenic by Multan Mitti

Abstract:In recent years the researchers debate that the adsorption technique is an economical method for groundwatertreatment to remove the toxic metals or inorganic effluents like Arsenic which cause health hazards to the livingorganisms. The adsorption techniques are categorized into physical, chemical, and Biological methods. Adsorption,ion exchange, and coagulation/filtration are physical methods. The studies revealed that among all these methods,Adsorption is the best fitting and low-cost for the high percentage removal of Arsenic from the water. It is known asthe efficient unit operation in the chemical engineering processes employed for the segregation of the wastewaterpollutants to meet the demand for drinking water in the most populated areas. Multan mitti which has a highadsorptive nature is selected for the removal of Arsenic in these studies. The efficiency of adsorption on Multanmitti was explored with various parameters such as contact time 30 min, dosage 2.0 gm with 50 μg/L concentrationof Arsenic, and pH 7 was identified as the optimum conditions for the maximum Arsenic adsorption. The highestremoval of Arsenic is 81% with 2.0 gm of dosage. The experimental studies reveal that Langmuir and Freundlich'sisotherms were found good fitting isotherm models for the Arsenic removal on Multan mitti.