Reactive Extraction of Phenylacetic Acid with Tri-n-butyl Phosphate in Benzene, Hexanol, and Rice Bran Oil at 298 K

Abstract

Phenylacetic acid extraction from an aqueous system gets consideration because of its extensive uses in the production of β-lactam antibiotics. In the present paper, reactive extraction has been investigated for the removal of phenylacetic acid by tri-n-butyl phosphate from the aqueous phase in benzene, hexanol, and rice bran oil as diluents. Reactive extraction data were discussed in terms of overall distribution coefficients (Do), loading ratio (ϕ), degree of extraction (η %), and equilibrium complexation constants (Eαβ). The mass action law model was used to represent equilibrium of reactive extraction of phenylacetic acid–tri-n-butyl phosphate. Also the results on water coextraction have been presented. A further extensive discussion on toxicity, back extraction, and regeneration was given. It is a first kind of study for the removal of phenylacetic acid from the aqueous phase by reactive extraction using tri-n-butyl phosphate in benzene, hexanol, and rice bran oil.