The isolation and recovery of naphthenic acid from highly acidic model oil was performed using hydroxide-based ionic liquids. An extremely low ionic liquid/oil ratio was used to completely deacidify the model oil. Tetraalkylammonium and tetraalkylphosphonium hydroxide ionic liquids were employed in this study. Tetraalkylammonium-based ionic liquids are more efficient than tetraalkylphosphonium-based ionic liquids. The recyclability of the ionic liquids for the extraction of naphthenic acid was also studied. The regeneration of the extracted naphthenic acid was achieved.
Alogayli, Samiyah and Gupta, Ram Krishna, "Topical Literature Review of 'Extraction of Naphthinc Acid from highly acidic oil using Hydroxide-based ionic liquids'" (2016). Poster Presentations. 4.