Reduction of fluoride and sulfate ions in Syrian phosphoric acid by extraction with tertiary amins

Abstract

General Fertilizer Company GFC Homs produces a lot of wet phosphoric acid, but it is unsuitable for food or pharmaceutical uses. Reduction of fluoride and sulfate ions contents in wet phosphoric acid by liquid - liquid extraction with tertiary aliphatic amins was studied. The effect of solvent concentration and temperature on the extraction was studied. The effect of diluent on the extraction yield and raffinate acid specifications was also studied.