Separation of heavy metals using S,S-EDDS (ethylene diamine disuccinic acid)

摘要

A process for separating heavy metal from an immiscible substrate, comprising contacting the substrate with an aqueous solution that contains chelating agent [S,S]-ethylene diamine disuccinic acid or [S,S]-diimine butane dioic acid, thereby forming an extract solution of heavy metal chelate, which can be separated from the substrate and the heavy metal subsequently separated form the extract solution.