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HWAHAK KONGHAK,
Vol.35, No.5, 698-704, 1997
Vol.35, No.5, 698-704, 1997
2-Propanol 수용액을 포함한 4성분계의 액-액 평형
Liquid-Liquid Equilibria for Quaternary Systems Containing 2-Propanol Aqueous Solution
25℃에서 2-propanol-water-binary solvent로 이루어진 4성분 액-액 추출계의 상평형에 대하여 연구하였다. MIBK-butylacetate와 ethyl acetate-toluene을 혼합용매로 사용하였으며, 수용액으로부터 2-propanol을 추출함에 있어서 혼합용매 사용의 효과를 고찰하기 위하여 각 4성분계에 대한 용해도 곡선, tie-line, 분배도와 선택도를 측정하였다. 또한 실험에 의한 tie-lline 데이터를 UNIFAC 모델식에 의해 예측된 값들과 비교하였으며, UNIFAC 모델식이 본 실험에 설정된 4성분계에 대하여 3.16 mole %의 평균 RMSD 범위내에서 tie-line의 예측이 가능함을 알 수 있었다.
We studied on the phase equilibria of quaternary liquid-liquid extraction system composed 2-propanol-water-binary solvent at 25℃. MIBK-butyl acetate and ethyl acetate-toluene were used as binary solvents. Binodal curve, tie-line, distribution and selectivity for each quaternary system have been determined in order to investigate the effect of using binary solvent in extracting 2-propanol from aqueous solution. And these experimental tie-line data were also compared with the values predicted by UNIFAC model. It was shown that UNIFAC model is capable of predicting the tie-line in these quaternary systems within an average RMSD of 3.16 mole %.
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