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Received December 8, 2008
Accepted February 8, 2009
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Modelling mass transfer coefficient for liquid-liquid extraction with the interface adsorption of hydroxyl ions
Department of Applied Chemistry, University of Bu-Ali Sina, Hamedan 65174, Iran
saien@basu.ac.ir
Korean Journal of Chemical Engineering, July 2009, 26(4), 963-968(6), 10.1007/s11814-009-0160-4
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Abstract
A combined model was used for prediction of overall mass transfer coefficient of drops in the liquid-liquid extraction process, prone to the deleterious effect of adsorbed hydroxyl ions onto the interface. The importance is due to the use of different pH waters as aqueous phase. The work is based on single drop experiments with a chemical system of toluene-acetone-water where the pH of the continuous aqueous phase was within the range 5.5-8, appropriate to most industrial waters, and can lead to rigid behavior of circulating drops. The combined model in conjunction with the correlation developed here for the ratio of interfacial velocity to drop terminal velocity that links the film mass transfer coefficients of both sides can be used satisfactorily for design purposes. This model gives a maximum relative deviation of less than ±10% for the mass transfer directions of dispersed to continuous phase and vice versa.
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Beitel A, Heideger WJ, Chem. Eng. Sci., 26, 711 (1971)
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Pfennig A, Schwerin A, Gaube J, J. Chromatogr. B, 711, 45 (1998)
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Marinova KG, Alargova RG, Denkov ND, Velev OD, Petsev DN, Ivanov IB, Borwankar RP, Langmuir, 12(8), 2045 (1996)
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Taylor AJ, Wood FW, Trans. Faraday Soc., 53, 523 (1957)
Gabler A, Wegener M, Paschedag AR, Kraume M, Chem. Eng. Sci., 61(9), 3018 (2006)
Saien J, Akbari S, Chem. Eng. Data, 51, 1832 (2006)
Saien J, Daliri S, Ind. Eng. Chem. Res., 47(1), 171 (2008)
Ghalehchian JS, Slater MJ, Chem. Eng. J., 75(2), 131 (1999)
Ghalehchian JS, J. Chem. Eng. Jpn., 35(7), 604 (2002)
Slater MJ, Can. J. Chem. Eng., 73(4), 462 (1995)
Brodkorb MJ, Bosse D, von Reden C, Gorak A, Slater MJ, Chem. Eng. Process., 42(11), 825 (2003)
Saien J, Barani M, Can. J. Chem. Eng., 83(2), 224 (2005)
Saien J, Darayi A, J. Chem. Eng. Jpn., 38(9), 692 (2005)
Saien J, Riazikhah M, Ashrafizadeh SN, Ind. Eng. Chem. Res., 45(4), 1434 (2006)
Ashrafizadeh SN, Saien J, Reza B, Nasiri M, Ind. Eng. Chem. Res., 47, 7242 (2008)
Sanpui D, Khanna A, Korean J. Chem. Eng., 20(4), 609 (2003)
Lochiel AC, Calderbank PH, Chem. Eng. Sci., 19, 471 (1964)
Lochiel AC, Can. J. Chem. Eng., 43, 40 (1965)
Young CH, Korchinsky WJ, Chem. Eng. Sci., 44, 2355 (1989)
Handlos ASE, Baron T, AIChE J., 3, 127 (1957)
Steiner L, Chem. Eng. Sci., 41, 1979 (1986)
Baldauf W, Knapp H, Phys. Chem., 87, 304 (1983)
Sanpui D, Singh MK, Khanna A, Korean J. Chem. Eng., 21(2), 511 (2004)
Grace JR, Wairegi T, Nguyen TH, Trans. Inst. Chem. Eng., 54, 167 (1976)
Skelland AHP, Interphase Mass Transfer, in: Science and practice of liquid-liquid extraction, J. D. Thornton, pp. 93-94 Clarendon Press: Oxford, U.K (1992)
Beitel A, Heideger WJ, Chem. Eng. Sci., 26, 711 (1971)
