High-pressure vapor-liquid equilibrium data for CO2-orange peel oil

Abstract

Recently, there has been a growing interest in fractionating orange peel oil by the use of supercritical carbon dioxide (SCCO2). However, progress in this area has been hindered by the lack of more comprehensive work concerning the phase equilibrium behavior of the SCCO2-orange peel oil system. In this context, the aim of this work is to provide new phase equilibrium data for this system over a wide range of temperatures and pressures, permitting the construction of coexistence PT-xy curves as well as the P-T diagram. The experiments were performed in a high-pressure variable-volume view cell in the temperature range of 50-70ºC from 70 to 135 atm and in the CO2 mass fraction composition range of 0.35-0.98. Based on the experimental phase equilibrium results, appropriate operating conditions can be set for high-pressure fractionation purposes

Chemical characterization and phase behaviour of grape seed oil in compressed carbon dioxide and ethanol as co-solvent

“…The experimental apparatus and procedure have been described in detail in a variety of studies [25][26][27][28][29][30][31][32] and were extensively validated [33][34][35][36]. The experimental apparatus was employed to conduct the experiments up to 20.6 MPa and T = 343.15 K. After preliminary tests, the molar ratio of ethanol to CO 2 was kept constant at 1:3 for all experimental measurements, which provided proper visualization of phase transitions and required an adequate time for solubilization.…”

High-pressure phase equilibrium data for the (carbon dioxide + l -lactide + ethanol) system

“…The experimental apparatus and procedure have been used in a variety of studies [20][21][22][23][24] and was extensively validated [25,26]. Briefly, the experimental setup consists of a variable-volume view cell with two sapphire windows (one for light input and one for visual observation), an absolute pressure transducer (Smar, model LD 301), a portable programmer (Smar, model HT 201) for pressure acquisition, and a syringe pump (ISCO, model 260D).…”

Phase equilibrium data and thermodynamic modelling of the system (propane + DMF + methanol) at high pressures

“…The experimental apparatus and procedure have been used in a variety of studies [18][19][20][21][22][23][24][25] and were extensively validated [26][27][28][29][30].…”