Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
Abstract
In this work the volume expansion for the binary systems of ethanol and toluene, asindustrial organic solvents, in the presence of nearcritical and supercritical carbondioxide, CO2, at a temperature range of 293 to 333 K has been meticulously measured.The effect of the temperature and pressure of binary systems on volume expansion fororganic solvents have also been investigated. It can be observed that by increasing thepressure of the system at a constant temperature, the volume of the liquid phaseincreases smoothly, while at higher pressures a sudden volume expansion can occur.The range of pressure that can lead to a sudden increase in the volume expansion of theliquid phase in each specified temperature can be reported as a proper condition inproducing micro and nanoparticles. The experimental data for the volume expansion oforganic solvents were modeled using the conventional cubic Peng Robinson equation ofstate. The Average Absolute Relative Deviation percent (AARD%) for the binarysystems of ethanol + CO2 and toluene + CO2 were reported as 14.9% and 15.1%. Asinferred, it is vital to develop a thermodynamic model with greater accuracy in order tocorrelate the volume expansion of the systems studied in this work at variousconditions.
Hajimohammadi,A. , Taghikhani,V. , Ghotbi,C. and Nemati Lay,E. (2006). On the Selection of Proper Thermodynamic Conditions for the Gas Antisolvent Process (GAS) at Nearcritical and Supercritical Conditions. Iranian Journal of Chemical Engineering (IJChE), 3(4), 17-22.
MLA
Hajimohammadi,A. , , Taghikhani,V. , , Ghotbi,C. , and Nemati Lay,E. . "On the Selection of Proper Thermodynamic Conditions for the Gas Antisolvent Process (GAS) at Nearcritical and Supercritical Conditions", Iranian Journal of Chemical Engineering (IJChE), 3, 4, 2006, 17-22.
HARVARD
Hajimohammadi A., Taghikhani V., Ghotbi C., Nemati Lay E. (2006). 'On the Selection of Proper Thermodynamic Conditions for the Gas Antisolvent Process (GAS) at Nearcritical and Supercritical Conditions', Iranian Journal of Chemical Engineering (IJChE), 3(4), pp. 17-22.
CHICAGO
A. Hajimohammadi, V. Taghikhani, C. Ghotbi and E. Nemati Lay, "On the Selection of Proper Thermodynamic Conditions for the Gas Antisolvent Process (GAS) at Nearcritical and Supercritical Conditions," Iranian Journal of Chemical Engineering (IJChE), 3 4 (2006): 17-22,
VANCOUVER
Hajimohammadi A., Taghikhani V., Ghotbi C., Nemati Lay E. On the Selection of Proper Thermodynamic Conditions for the Gas Antisolvent Process (GAS) at Nearcritical and Supercritical Conditions. IJChE, 2006; 3(4): 17-22.
