Designing a cost effective method for the removal of fluoride in drinking water samples

Abstract

Exceeding the level of fluoride (F-) in drinking water is responsible for skeletal fluorosis in human beings. Several methods were already been established, and in this works the authors moto is to find out the cost effective method for the fluoride removal in water. To evaluate this various concentrations of fluoride solutions were prepared and were subjected to various methods for the best removal. In process of that the authors selected some cost effective methods and their reliability to the cost was compared. The present study was carried out to assess the ability of newlineelectrocoagulation process with iron and aluminum electrodes in order to removal of fluoride from aqueous solutions. Several working parameters, such as concentration of fluoride, pH, applied voltage and reaction time, distance between electrodes, electrode reactive area and effect of Coexisting ions were studied to achieve a higher removal capacity. Variable concentrations (1, 5 and 10 mg/l) of fluoride solutions were prepared by newlinemixing proper amount of sodium fluoride with tap water. The varying pH of the initial solution (5, 7 and 9) was also studied to measure their effects on the fluoride removal efficiency.