Methods of Synthesis of Oxides of Iron and Removing Compounds Arsenic in Water

Abstract

Abstract Environmental pollution by heavy metals has been extensively researched using different materials and techniques but, this problem has not been fully resolved. High adsorption capacity of iron oxides such as hematite, magnetite, goethite and, ferrihydrite to remove arsenic are described in this review. There are many international investigations about the minerals of iron oxides and they describe the composition, properties, synthesis methods and involved variables. Active carbon, silicones and polymers had been used to obtain composites with iron oxides and they have gave better results to remove different anions and cations. The aim in this paper is to introduce studies already carried out and encourage research in this topic to take advantage of the particular characteristics of iron oxides and use them in the environmental remediation. In addition, it is important to introduce the natural iron oxides availability that have a lot of field to study. The literature search on the subject was carried out in Science Direct and high impact articles related to natural or synthetic oxides were used.

Keywords

• arsenic, hematite, magnetite, goethite, iron composites