Acetic acid수용액을 포함한 4성분계의 액-액평형

Liquid-Liquid Equilibria for Quaternary Systems Containing Acetic acid and Water

  25℃에서 Acetic acid-water-binary solvent를 포함한 4성분 액-액추출계의 상평형에 대하여 연구하였다. methyl iso-butyl ketone(MIBK)-ethyl acetate을 혼합용매로 사용하였으며, 수용액으로부터 Acetic acid을 추출함에 있어서 혼합용매 사용의 효과를 고찰하기 위하여 각 4성분계에 대한 용해도곡선, tie-line, 분배도와 선택도를 측정하였다. 또한 실험에 의한 상평형 데이터를 UNIFAC 모델식으로 부터 계산된 값들과 비교하였으며, 4성분계 액-액평형에 대한 UNIFAC 모델의 적용 가능성을 확인하였다.

&nbsp;&nbsp;We studied on the phase equilibria of quaternary liquid-liquid extraction system containing Acetic acid-water-binary solvent at 25℃. MIBK- ethyl acetate 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 Acetic acid from aqueous solution.<BR>&nbsp;&nbsp;And these experimental equilibrium data were also compared with the values predicted by UNIFAC model. UNIFAC model was successfully used to predict quaternary liquid-liquid equilibria.