Fluoride removal from drinking water by pristine pumice as adsorbent

Abstract

Higher levels of Fluoride concentration in drinking water is a matter of serious concern in the present scenario. Controlling the Fluoride levels within the permissible range is of utmost importance to Human beings. The potential of pristine pumice to be used as an adsorbent for the elimination of fluoride from the drinking water is examined. The experiments are performed in batch equilibrium techniques. The influence of varying sorbent concentration, contact time and initial concentration of fluoride was also studied. It has been observed that the fluoride removal is directly proportional to the contact time and sorbent dose. The increase in the reaction period and the sorbent dose improved the quantity of fluoride adsorbed. The present study has indicated that an increase in fluoride initially present results in low efficacy of percentage removal. The adsorption process was found to follow the Langmuir Isotherm.