NGHIÊN CỨU KHẢ NĂNG HẤP PHỤ ASEN TRÊN VẬT LIỆU NANO α-Fe2O3

Abstract

The nanosized α-Fe₂O₃ and nanosized α-Fe₂O_{3 ­}coated sand were synthesised for arsenic adsorption. The sorption treatment of both As (III) and As (V) in water solution was investigated. The results showed that  As (V) was adsorbed better than As (III) in the same conditions. The nanosized a-Fe₂O₃ yielded maximum sorption capacity of 30.86 mg/g for As (III) and 35.09 mg/g for As (V) and the nanosized α-Fe₂O_3­coated sand yielded maximum sorption capacity of 1.18 mg/g for As (III) and 1.30 mg/g for As (V) according to the Langmuir isotherm.