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Received July 24, 2012
Accepted November 5, 2012
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Effect of silica nanoparticles on the phase inversion of liquid-liquid dispersions
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran 1Faculty of Nuclear Engineering and Physics, Amir Kabir University, Tehran, Iran
hoab@ut.ac.ir
Korean Journal of Chemical Engineering, March 2013, 30(3), 733-738(6), 10.1007/s11814-012-0195-9
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Abstract
The effect of silica nanoparticles on phase inversion of liquid-liquid dispersions in a stirred vessel was investigated. The studied systems were toluene dispersed in water and vice versa. In the first set of experiments, phase inversion behavior of systems without Silica nanoparticles was evaluated and subsequent experiments were conducted in the presence of the nanoparticles. For this purpose, Silica nanoparticles of different concentrations (0.01, 0.03, 0.05,_x000D_
0.07 wt%) were dispersed in water. The nanofluid stability was examined using an ultraviolet-visible (UV-vis) spectrophotometer. The results indicated that increase in silica nanoparticle concentrations up to 0.07 wt% led to increase in agitation speed of phase inversion 43-53.5% and 38.5-45% in the case of O/W and W/O dispersions, respectively. Consequently, the tendency of dispersions to inversion diminished as nanoparticle concentrations increased. Finally, 0.05 wt% of silica nanoparticle was selected as the optimum on the range studied.
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Guilinger TR, Grislingas AK, Erga O, Ind. Eng. Chem. Res., 27, 978 (1988)
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Yeo LY, Matar OK, de Ortiz ESP, Hewitt GF, J. Colloid Interface Sci., 248(2), 443 (2002)
Amouei M, Khadiv-Parsi P, Moosavian MM, Hedayat N, Davoodi AA, Iran. J. Chem. Chem. Eng., 5 (2008)
Kumar S, Gandhi KS, Kumar R, Chem. Eng. Sci., 46, 2363 (1991)
Tsouris C, Dong JH, Chem. Eng. Sci., 55(17), 3571 (2000)
Yeo LY, Matar OK, Perez de Ortiz ES, Hewitt GF, Chem. Eng. Sci., 57(17), 3505 (2002)
Lee JM, Soong Y, Ind. Eng. Chem. Process Des. Dev., 24, 118 (1985)
Binks BP, Horozov TS, Colloidal Particles at Liquid Interfaces, Binks BP, Horozov TS Eds., Cambridge University Press, Cambridge (2006)
Binks BP, Rodrigues JA, Langmuir, 19(12), 4905 (2003)
Nonomura Y, Kobayashi N, J. Colloid Interface Sci., 330(2), 463 (2009)
White KA, Schofield AB, Wormald P, Tavacoli JW, Binks BP, Clegg PS, J. Colloid Interface Sci., 359(1), 126 (2011)
Cui ZG, Yang LL, Cui YZ, Binks BP, Langmuir, 26(7), 4717 (2010)
Budai I, Nagy OZ, Kaptay G, Colloids Surf. A- Physicochem.Eng. Asp., 377, 325 (2011)
Binks BP, Philip J, Rodrigues JA, Langmuir, 21(8), 3296 (2005)
Akartuna I, Studart AR, Tervoort E, Gonzenbach UT, Gauckler LJ, Langmuir, 24(14), 7161 (2008)
Yan N, Gray MR, Masliyah JH, J. Colloids Surf., 193, 97 (2001)
Stiller S, Gers-Barlag H, Lergenmueller M, Pflucker F, Schulz J, Wittern KP, Daniels R, J. Colloids Surf., 232, 261 (2004)
Behin J, Norouzi S, Pet. Coal., 53, 115 (2011)
Binks BP, Lumsdon SO, Langmuir, 16(8), 3748 (2000)
Einstein A, Ann. Phys., 19, 289 (1906)
