Sutapa Chakrabarty, H.P.Sarma
Abstract
This study evaluated the effectiveness of betel nut coir charcoal as a potential adsorbent for defluoridation of synthetic aqueous solution following batch method of operation. The efficiency of the adsorbent was measured at different temperature settings with respect to initial fluoride concentration, contact time, and pH of the solution. The process achieved equilibrium at 180 minutes with maximum defluoridation efficiency of 92%. The isotherm can be conformed to either Langmuir and Freundlich model at different temperature. The process follows pseudo 2nd order rate with both boundary layer effect and pore diffusion mechanism.