Supercritical extraction of phenol from soil

✍ Scribed by Richard K. Hess; C. Erkey; A. Akgerman

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 504 KB
• Volume: 4
• Category: Article
• ISSN: 0896-8446
• DOI: 10.1016/0896-8446(91)90030-a

✦ Synopsis

The distribution coefficients for phenol between soil and both sub-and supercritical carbon dioxide were measured by static experiments in the temperature range 297-349 K and the pressure range 9-30 MPa. The effects of soil organic content, soil moisture, temperature, and pressure on the distribution coefficients were investigated. Simple thermodynamic models were developed for temperature and pressure dependency of the distribution coefficients which successfully represent the data. In addition, methanol was tested as an entrainer and experiments were conducted with benzene to investigate the effects of copollutants. The results show that the presence of chemicals in the system other than phenol affect the distribution coefficients.