ARSENIC REMOVAL FROM DRINKINGWATER USING IRON OXIDE-COATED SAND

Experiments in batch and column studies have demonstrated the possibility of using iron oxide-coated sand filtration 2 (IOCS-2) to remove As(V) and As(III) from drinking water up to a level less than 5 micrograms/liter, provided that IOCS-2 be prepared through high temperature coating process. The isotherm study results showed that the observed data fitted well with the Langmuir model. IOCS-2 can be regenerated and the arsenic retained in the media can be recovered by exposing the media to base solutions and through backwash operations.