Abstract
Orange waste has been loaded with various metal ions to create suitable adsorption sites for arsenic and phosphorus. Batch adsorption studies revealed that arsenate and arsenate removal was favorable at pH 5-9 and 9-11, respectively, while phosphate removal occurred at pH 7-10. The maximum adsorption capacity of the prepared gel was evaluated as 42 mg/g for both As (V) and As (III) while 13.9 mg/g for phosphate. Column adsorption studies confirmed that the gel has the potential to adsorb and elute arsenate and phosphate in continuous mode. The excellent anion separation capability of this gel could lead to the development of cost-effective technology for arsenic and phosphorus removal.
