Key words: wastewater, phenol, acetone, supercritical fluid extraction, carbon dioxide, propane-butane mixture, phase behavior, «CO2-acetone» system
An analysis of the phase behavior of binary systems that include organic components (phenol and acetone) and potential extractants (carbon dioxide and propane-butane mixture), which are supposed to be used in the supercritical state to treat the industrialwastewater runoff of «Êazanorgsintez» PJSC, is presented. The study of the phase behavior of the thermodynamic system «CO2-acetone» in the near-critical region of the state (313 K) was carried out using a high-pressure optical cell. Various phase states are fixed, including areas of critical opalescence and boundless miscibility for this binary system. The results of using the supercritical fluid extraction method for purification of a model aqueous solution of phenol and acetone with concentrations corresponding to industrial waste are presented.
doi: 10.34984/SCFTP.2022.17.4.001