Compositions and processes for removing heavy metals from phosphoric acid containing streams

Abstract

Compositions and processes for removing/recovering heavy metal ions in s phosphoric acid containing streams by adding reagents having at least one dialkyldithiophosphate compound, with the alkyl chain length of C8 to C18, at least one dialkyldithiophosphinate compound, and at least one surfactant to a phosphoric acid solution or slurry to form heavy metal ion complexes, and separating the heavy metal ion complexes from the solution or slurry are provided herein.

Dependencies are inferred from the claim text.