REMOVAL OF BROMATE FROM WASTEWATER BY GRANULAR FERRIC HYDROXIDE

Abstract

The feasibility of granular ferric hydroxide (GFH) for bromate removal from water has been studied. Batch experiments were performed to study the influence of various experimental parameters such as effect of contact time, initial bromate concentration, temperature, pH and effect of competing anions on bromate removal by GFH. The adsorption kinetics indicates that uptake rate of bromate was rapid at the beginning and 75% adsorption was completed in 5 mm and equilibrium was achieved an hour. The maximum adsorption potential of GFH for bromate removal was 16.5 mg g-1 at 25 oC. Therefore, in the amount adsorbed after equilibrating no significant change, was Further period of balance 60 minutes was selected for experiments. After the result in comparison to other traditional Adsorbents on GFH bromate that with fast is shows its kinetics, finely activated carbon such as the GAC and PAC which show the longer equilibration within the time of 4hours to 20hours.