IJCEA 2013 Vol. 4(1): 21-25 ISSN: 2010-0221
DOI: 10.7763/IJCEA.2013.V4.253
Abstract— The major component of turpentine is α-pinene and the main hydration product of α-pinene is α-terpineol. To obtain the optimal process design of α-terpineol production, some initial information regarding the principle of the thermodynamics and phase equilibrium are required. The aim of this paper is to present liquid-liquid equilibrium (LLE) of system containing α-pinene, α-terpineol and water. Ternary LLE for α-pinene, α-terpineol and water system was determined by experiment at the temperatures of 301, 327 and 353 K and atmospheric pressure. The three component mixture was stirred for about 30 min, then the mixture was left for about 2 h for complete phase separation. The composition of both phases was analyzed by using a Gas Chromatograph. The thermodynamic equilibrium models were proposed. LLE model in this study includes activity coefficient model based on NRTL and UNIQUAC models. The NRTL model (α = 0.2) correlates\ the LLE data for the system of α-pinene + α-terpineol + water at the temperatures 301, 327 and 353 K with RMSD of 0.5464%, 0.000169% and 0.0054%, respectively. The UNIQUAC model correlates the LLE data for the system of α-pinene + α-terpineol + water at the temperatures 301, 327 and 353 K with RMSD of 0.756%, 1.314% and 1.6615%, respectively. The LLE data for the system of α-pinene + α-terpineol + water were successfully correlated using the NRTL and UNIQUAC models at that temperatures
Index Terms— α-Pinene, α-terpineol, liquid-liquid
equilibrium
Herti Utami is with the Lampung University, Bandar Lampung, Indonesia.
She is now Ph.D student at the Chemical Engineering Department, Gadjah
Mada University, Indonesia (corresponding author to provide phone :
+62-0274-9232121; e-mail: hertie19@ hotmail.com and
hertie19@yahoo.com).
Sutijan, Roto, and Wahyudi Budi Sediawan are with the Gadjah Mada
University, Yogyakarta, 55281, Indonesia He is now with the Department of
Chemical Engineering, Gadjah Mada University, Yogyakarta, Indonesia
(e-mail: sutijan@chemeng.ugm.ac.id, roto05@ugm.ac.id,
wbsrsby@indosat.net.id)).
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Cite: Herti Utami, Sutijan, Roto, and Wahyudi Budi Sediawan, " Liquid-Liquid Equilibrium for System Composed of
α-Pinene, α-Terpineol and Water, " International Journal of Chemical Engineering and Applications vol. 4, no. 1, pp. 21-25, 2013.
