Removal of Arsenic from Drinking Water by Hydroxyapatite Nano Particles

Abstract

Arsenic(As) contained in drinking water can cause adverse effects on human health. This study investigated the effect of hydroxyapatite nanoparticles (nano-HAp) on sorption of As(V) ions in aqueous solution. The amounts of arsenic ion,nano-HAp and pH on removal efficiency were also investigated. Results showed that the removal of arsenate from water using hydroxyapatite nanoparticles, improved with increasing pH. The optimum amount of nano-HAp for As (V) removal is found to be 0/6 g/L with the removal efficiency of 88 %. The sorption data were then correlated with the Langmuir, Freundlich, adsorption isotherm models. The results indicated that nano-HAp can be used as an effective adsorbent for removal of As(V) from aqueous solution.