Preparation of two nanometer magnetic flocculants and treatment of slime wastewater

Abstract

Nano Fe3O4 was prepared by co-precipitation method and loaded into cellulose and biochar to prepare Fe3O4-chitosan-cellulose and Fe3O4-chitosan-biochar.XRD, ft-ir, SEM and energy spectrum showed that the target product was obtained. Fe3O4-chitosan-cellulose and Fe3O4-chitosan-biochar flocculant used in coal slime water treatment respectively. The results showed that water turbidity and COD removal rate of Fe3O4-chitosan-cellulose were 96.90% and 78.34% respectively and the water turbidity and COD removal rates of Fe3O4-chitosan-biochar on slurry water were 94.05% and 73.89% respectively. Fe3O4-chitosan-biochar treatment is better.