(586b) Liquid Densities and Derived Thermodynamic Properties of Cresol Isomers at Temperatures between 313 to 363 K and Pressures up to 25 Mpa

The pollutants, particularly organic compounds, released from industry to the environment are toxic to humans and other living organisms. The organic pollution is principally due to the occurrence of phenolic compounds, polynuclear aromatic hydrocarbons, halogenated hydrocarbons, pesticides, etc [1]. Phenolic compounds are among the most prevalent forms of chemical pollutants in industrial wastewater. Phenolic compounds contained in wastewater mainly come from oil refineries, coal conversion plants, petrochemicals, polymeric resins, coal tar distillation, pharmaceuticals, etc [1]. Our goal is obtaining physical properties such as density conveying the development of supercritical fluids processes for the remediation of wastewater. Density of fluids is an important property in model development and engineering applications. In this work, densities of pure cresols were determined at temperatures from (313 to 363) K and pressures up 25 MPa. The obtained densities of each compound were correlated using a 6-Parameter explicit volume equation. Only densities of m-cresol at high pressure are reported in the literature [2,3]. These were compared with our results. The isothermal compressibility, isobaric thermal coefficient and the internal pressure were derived from the densities.

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