Liquid-Liquid Extraction of Naphthenic Acid Using Thiocyanate Based Ionic Liquids

Rabiatul Adawiyah Najmuddin, Mohamed Ibrahim Abdul Mutalib, Syed Nasir Shah, Humbul Suleman, Kallidanthiyil Chellappan Lethesh, Rashidah Binti Mohamad

Research output: Contribution to journalArticlepeer-review


In this work the de-acidification of dodecane was investigated using [DBU] based ionic liquid with thiocyanate [SCN] anion. The liquid-liquid equilibrium data for ternary mixture of {dodecane + naphthenic acid + [DBU-Hex][SCN]} were experimentally determined at a constant temperature and pressure. The ternary diagram shows that all the tie lines have a positive slope at all concentration of naphthenic acid, thus indicating that the ionic liquid is enough for the de-acidification of dodecane. The liquid-liquid equilibrium data was correlated using non-random two liquid (NRTL) model. An extremely good fit was obtained for all the tie lines using the NRTL model.
Original languageEnglish
Pages (from-to)662-670
JournalProcedia Engineering
Publication statusPublished - 12 Jul 2016


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