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Received September 29, 2008
Accepted December 30, 2008
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Solubility and growth rate of reactive blue49 and black8 dyes in salting-out system
Department of Chemical Engineering, Soonchunhyang University, Asan-si 336-745, Korea
chemhan@sch.ac.kr
Korean Journal of Chemical Engineering, January 2009, 26(1), 246-249(4), 10.1007/s11814-009-0041-x
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Abstract
Reactive dyeing is one of most widely used methods for the coloration of cellulosic fibers. Reactive dyes have a low utilization degree compared to other types of dyestuff, since the functional group also bonds to water, creating hydrolysis. Salting out crystallization process was used to obtain dye crystals from solution. Physical properties and growth rate were measured for the design of the crystallization process. Density of RB8 crystal was 1.92 g/cm^(3) and that of RB49 was 1.26 g/cm^(3). Density of dye solution was linearly decreased with rise in temperature. Saturation solubility to the water was constant over room temperature. Solubility of dye solution was decreased by higher temperature and higher KCl concentration. The growth rate of RB8 was 0.964×10^(-06)ΔC^(1.041) and that of RB49 was 2.922×10^(-06) ΔC^(2.236) respectively.
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Wiseman P, An introduction to industrial organic chemistry, 2ed, Wiley, New York (1976)
Nyvlt J, Design of crystallizers, CRC Press (1992)
Ouiazzane S, Messnaoui B, Abderafi S, Wouters J, Bounahmidi T, Journal of Crystal Growth, 310, 798 (2008)
Akkaya G, Uzan I, Guzel F, Dyes and Pigments, 73, 168 (2007)
Yang XY, Al-Duri B, Chem. Eng. J., 83(1), 15 (2001)
O'Mahony T, Guibal E, Tobin JM, Enzyme Microb. Technol., 31(4), 456 (2002)
Mohan R, Myerson AS, Chem. Eng. Sci., 57(20), 4277 (2002)
Nti-Gyabaah J, Chmielowski R, Chan V, Chiew YC, International Journal of Pharmaceutics, 359, 111 (2008)
Han HK, Lee SI, Lee CS, HWAHAK KONGHAK, 28(1), 58 (1990)
Han HK, Lee SI, Lee CS, Korean J. Chem. Eng., 10(2), 100 (1993)
Han HK, Lee SI, Lee CS, A discretized population balance for batch precipitation system, 4th Japan-Korea Symposium on Separation Technology, 961-964 (1996)
Han HK, Lee JH, Korean Chem. Eng. Res., 42(4), 465 (2004)
Han HK, Jeong OH, Lim MH, Kim JA, Korean Chem. Eng. Res., 44(3), 289 (2006)
Lee SI, Han HK, Lee CS, J. Institute of Ind. Tech., Korea Univ., 27, 33 (1991)
Lee SI, Han HK, Lee CS, Optimal control of crystal size of NaCl in a semibatch crystallizer, 3rd Korea-Japan Symposium on Separation Technology, 719-803 (1993)
Lee SI, Lee CS, HWAHAK KONGHAK, 32(4), 600 (1994)
Lee SI, Han HK, Lee CS, A transformation kinetics and discretization population balance for calcium carbonate, 4th Japan-Korea Symposium on Separation Technology, 861-865 (1996)
