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Received August 7, 2012
Accepted April 6, 2013
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Phase equilibrium data for aqueous solutions of formic acid with 2-ethyl-1-hexanol at T=(298.2, 308.2, 318.2, and 328.2) K
Department of Chemical Engineering, University of Guilan Rasht, 41335, Iran 1Department of Chemistry, Faculty of Science, University of Urmia, Urmia, Iran
hggilani@guilan.ac.ir
Korean Journal of Chemical Engineering, June 2013, 30(6), 1289-1294(6), 10.1007/s11814-013-0050-7
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Abstract
Liquid-liquid equilibrium (LLE) data for the system of (water+formic acid+2-ethyl-1-hexanol) were experimentally determined at T=(298.2, 308.2, 318.2, and 328.2) K and atmospheric pressure. A type-2 LLE was obtained for this ternary system. The influence of temperature on the equilibrium characteristics was found to be smallat the temperatures studied. Distribution coefficients and separation factors were calculated over the immiscibility regions. The experimental tie-line data were correlated using the UNIQUAC model. The values of the interaction parameters between each pair of the components were obtained for this thermodynamic model. The root mean square deviation (RMSD) between the observed and calculated mass fractions was 0.61%.
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References
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Senol A, Fluid Phase Equilib., 243(1-2), 51 (2006)
Uslu H, Kirbaslar SI, Fluid Phase Equilib., 287(2), 134 (2010)
Sahin S, Kirbaslar SI, Bilgin M, J. Chem. Thermodyn., 41(1), 97 (2009)
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Kertes AS, King CJ, Biotechnol. Bioeng., 28, 269 (1986)
Cai W, Zhu S, Piao X, J. Chem. Eng. Data., 46, 1472 (2001)
Yang ST, White SA, Hsu ST, Ind. Eng. Chem. Res., 30, 1335 (1991)
Senol A, J. Chem. Eng. Jpn., 32(6), 717 (1999)
Senol A, Sep. Purif. Technol., 21(1-2), 165 (2000)
Uslu H, Bayat C, Goekmen S, Yorulmaz Y, J. Chem. Eng. Data, 54(1), 48 (2009)
Leung RWK, Badakhshan A, Ind. Eng. Chem. Res., 26, 1593 (1987)
BaslIoglu B, Cehreli, Fluid Phase Equilib., 312, 85 (2011)
Senol A, Fluid Phase Equilib., 227(1), 87 (2005)
Bilgin M, Birman I, Fluid Phase Equilib., 302(1-2), 249 (2011)
Ince E, Kirbaslar SI, Sahin S, J. Chem. Eng. Data, 52(5), 1889 (2007)
Ozmen D, Fluid Phase Equilib., 269(1-2), 12 (2008)
Abrams DS, Prausnitz JM, AIChE J., 21, 116 (1975)
Treybal RE, Liquid extraction, McGraw-Hill: New York (1963)
Othmer DF, Tobias PE, Ind. Eng. Chem., 34, 690 (1942)
Bachman I, Ind. Eng. Chem. Anal. Ed., 12, 38 (1940)
Sorensen JM, Ph.D. Thesis, Technical University of Denmark, Lyngby, Denmark (1980)
Arce A, Blanco A, Martinezageitos J, Vidal I, Fluid Phase Equilib., 93, 285 (1994)
Gilani HG, Golpour M, Ashraf SS, Fluid Phase Equilib., 310(1-2), 192 (2011)
