A kind of lanthanum manganate with high iron content and its preparation method and application

Abstract

The invention discloses a lanthanum manganate with high iron content and a preparation method and application thereof. A mixture of ferric nitrate nonahydrate, manganese nitrate tetrahydrate and lanthanum nitrate hexahydrate is dispersed in an alkaline potassium hypochlorite solution, and stirred under ice bath conditions to obtain a target product. The material is rich in ferrate ions, permanganate ions and lanthanum ion active sites. The invention also discloses the application of the composite material in the field of water environment treatment and restoration, which can well utilize physical and chemical effects to quickly remove fluoride ions, iron ions and manganese ions in water, and can also reduce the turbidity of water. The used lanthanum manganate with high iron content can be recycled by soaking and drying.