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HWAHAK KONGHAK,
Vol.30, No.5, 622-630, 1992
Vol.30, No.5, 622-630, 1992
용매-물-피리딘계에 대한 삼성분계의 액-액 평형에서 염효과
Salt Effect in Liquid-Liquid Equilibrium for Ternary Systems with Solvent-water-Pyridine
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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