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Received September 5, 2005
Accepted February 11, 2006
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Performance study on ultrafiltration of Kraft black liquor and membrane characterization using Spiegler-Kedem model
Projjwal Sarkar
Siddhartha Datta
Chiranjib Bhattacharjee†
Prashant Kumar Bhattacharya1
Bharat Bhushan Gupta2
Department of Chemical Engineering, Jadavpur University, Calcutta - 700 032, India 1Department of Chemical Engineering, Indian Institute of Technology (I.I.T.), Kanpur - 208 016, India 2IUT de Belfort-Montb´eliard, Universit´e de Franche-Comt´e, 90016 Belfort, France
Korean Journal of Chemical Engineering, July 2006, 23(4), 617-624(8), 10.1007/BF02706804
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Abstract
Ultrafiltration of Kraft black liquor was carried out by using an asymmetric membrane in a stirred batch cell, modified to work on a continuous mode. Spiegler-Kedem (SK) model from irreversible thermodynamics was used for the estimation of different membrane-solute parameters, like solute permeability (Pm) and reflection coefficient (σ). The Pm and σ so calculated from the above model were used to study the variation of these parameters with other process variables, like bulk concentration, pressure difference and stirrer speed. Finally, a simulation model was developed with the objective to predict permeate flux and rejection, which coupled the film theory, osmotic pressure model and SK model. The simulation results obtained from this study were validated with the experimental data using cellulose acetate membrane of 5,000 Da MWCO. Reasonably good agreements between the predicted and experimental values were observed and the average absolute deviation (AAD) for the prediction of flux and rejection using SK model was found to be 6.3%.
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References
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Glimenius R, Desalination, 35, 259 (1980)
Iritani E, Mukai Y, Korean J. Chem. Eng., 14(5), 347 (1997)
Jung CW, Kang LS, Korean J. Chem. Eng., 20(5), 855 (2003)
Kim JP, Kim JJ, Korean J. Chem. Eng., 20(1), 99 (2003)
Nguyen QT, Aptel P, Neel J, J. Membr. Sci., 7, 141 (1980)
Olsen O, Desalination, 35, 291 (1980)
Press WH, Teukolsky SA, Vetterling WT, Flannery BP, Numerical recipes in C, Cambridge University Press, UK (1992)
Soltanieh M, Gill W, Chem. Eng. Commun., 12, 279 (1981)
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Tsapiuk EA, Bryk MT, Medvedev MI, Kochkodan VM, J. Membr. Sci., 47, 107 (1989)
