Preparation and application of a novel magnetic anion exchange resin for selective nitrate removal

摘要

A novel magnetic anion exchange resin NDM-1 was prepared through suspension polymerization and then functionalized with ammonolysis and alkylating agents.Its application for selective removal of nitrate was performed in comparison with MIEX(R).The results demonstrated that NDM-1 achieved higher efficiency in nitrate removal than MIEX(R) did,with or without the existence of competing anion SO42-ascribed to its longer alkyl chains on exchange sites.Combined with the advantage of easy separation due to γ-Fe2O3 implanted,the magnetic anion exchange resin NDM-1 was considered to be superior to MIEX(R) for nitrate removal in practical application.