Removal of arsenic from waters with calcium silicate produced from rice hull ash

In this study, it is aimed that arsenic remove from water with using calcium silicate as adsorbent. For calcium silicate, two productions, which are calcium silicate produced in the presence of water and spacer (diethylene glycol), were performed. Arsenic removal efficincies were compared and calcium silicate type was decided according to results. As a result, it was decided to use calcium silicate produced in the presence of spacer which has 64,40% yield.the effect of time, pH, different arsenic concentrations and adsorbent quantities were investigated by using the calcium silicate produced in the presence of spacer and optimum conditions are determined. According to all results, optimum conditions were determined as 10 ppm initial As concentration, 30 min shaking time and natural pH (pH 6,5 -7). Arsenic removal is represented by D-R isoterm regarding results.