Prediction of Phase Equilibria for Systems Containing Phenols, Water, and CO₂ Using PRASOG

抄録

Supercritical CO₂ can be used to remove phenol from waste water. For evaluation of various processing conditions, a model for the distribution coefficients of phenol is necessary, for example, when the aqueous phenol solutions are contacted with supercritical CO₂. The range of distribution coefficients of phenol is 0.034 to 1.66, at 9.65 to 17.23 MPa, and 323 K. The objective of this paper is to extend the applicability of PRASOG to CO₂ + water + phenol solution. The average deviations between the predicted and experimental distribution coefficients is 37.4%. For the four binary systems, i.e., phenol + water, phenol + CO₂, m-cresol + CO₂, and H₂O + CO₂, the average deviation of the pressure is 7.9%.