NGHIÊN CỨU KHẢ NĂNG SỬ DỤNG OXIT HỖN HỢP Fe2O3-Mn23 CẤU TRÚC NANO ĐỂ HẤP PHỤ SẮT, MANGAN, ASEN

Abstract

Nanostructured type Fe₂O₃-Mn₂O₃ mixed oxide particles have been prepared by using polyvinyl alcohol gel method without any intermediate phase formation. The crystal structure and particles morphology have been XRD (X- Ray Diffraction) and SEM (Scanning Electron Microscopy) technique has also used to investigate the opitaned Fe₂O₃- Mn₂O₃ samples. To used nanostructured Fe₂O₃-Mn₂O₃ type mixed oxide for removing iron, manganese, arsenic from water. The results showed that nanostructured of Fe₂O₃-Mn₂O₃ type mixed oxide have absorbing ability for AS(III), AS(V), Fe(III), Mn(II) according to isothermar mode Langmuir. The adsorption capaciate of nanostructured  Fe₂O₃- Mn₂O₃ type mixed oxide are  41.20 mg/g  for  AS(III), 48.02 mg/g  for AS(V), 111.4 mg/g for Fe (III), 98.09 mg/g  for Mn(II).