AQUEOUS REMOVAL OF ARSENIC (III) USING ACID TREATED DEVDARU (POLYALTHIA LONGIFOLIA) LEAF POWDER

Abstract

The present study investigates the use of acid treated devdaru leaf powder (Polyalthia Longifolia) for adsorptive removal of arsenite from arsenite spiked distilled water. Adsorptions were studied at temperature 303K by batch processes. Rapid equilibrium was reached within 90 mins. The pseudo-second-order kinetic model was found to best correlate to the experimental data. Adsorption equilibrium data were well described by Langmuir, Freundlich and Temkin models. The Langmuir adsorption capacity was found to be 1.51 mg/g. This work can be used to remove As(III) from drinking water by using low cost adsorbent.