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용매-물-피리딘계에 대한 삼성분계의 액-액 평형에서 염효과
Salt Effect in Liquid-Liquid Equilibrium for Ternary Systems with Solvent-water-Pyridine
HWAHAK KONGHAK, October 1992, 30(5), 622-630(9), NONE
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Abstract
25℃에서 NaCl염 수용액을 5%, 10%, 15%의 수용액으로 제조하여 solvent(aniline, ethyl acetate, n-butyl ace- tate)-NaCl salt solution-pyridine계에 대하여 용해도곡선과 대응선을 측정하였다. 대응선 계산치를 예측하기 위하여 대응선 실험치를 NRTL 모델식에 상호연관시켜 모델 내의 파라미터와 대응선 계산치를 구하였다. 또한 대응선 실험데이타의 건전성과 염농도 증가에 따른 액-액 평형에 대한 염첨가 효과를 고찰하였다.
The experimental binodal curves and tie lines were determined for solvent-NaCl salt solution-pyridine systems at 25℃, and those tie line data were used to test thermodynamic consistency. The NaCl salt solutions were prepared with aqueous solution of 5%, 10% and 15% NaCl salts respectively. The experi-mental tie line data were correlated with the NRTL model, and the parameters and the calculated values of tie line were predicted. The effect of salt addition on liquid-liquid equilibria was also studied along with the increment of salt concentration.
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Seo JG, Lee JW, Park DW, HWAHAK KONGHAK, 30(1), 89 (1992)
Renon H, Prausnitz JM, AIChE J., 14, 135 (1968)
Othmer DF, White RE, Trueger E, Ind. Eng. Chem., 33, 1240 (1941)
Park DW, Ph.D. Dissertation, Hanyang-Univ., Seoul, Korea (1987)
Choi JS, Rhim JN, HWAHAK KONGHAK, 24(3), 185 (1986)
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Ramasubramanian J, Srinivasan D, Chem. Eng. Commun., 19, 335 (1983)
Varhegyi G, Eon CH, Ind. Eng. Chem. Fundam., 16, 182 (1977)
