Limiting diffusion coefficients of heavy molecular weight organic contaminants in supercritical carbon dioxide

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie950422v· OSTI ID:225469

Akgerman, A; Erkey, C; Orejuela, M ^[1]

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1. Texas A and M Univ., College Station, TX (United States). Chemical Engineering Dept.

A Taylor dispersion apparatus was designed and constructed for measuring diffusion coefficients in supercritical carbon dioxide. The limiting mutual diffusion coefficients of naphthalene, phenanthrene, and hexachlorobenzene were measured in the temperature range of 308--328 K and at pressures between 96.4 and 249 bar. The triple point volume for carbon dioxide extrapolated from the data closely matches its literature value. In addition, a simple correlation based on hard sphere theories was developed for prediction of diffusivities of heavy molecular weight organics in supercritical carbon dioxide.

• OSTI ID: 225469
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 3 Vol. 35; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CARBON DIOXIDE
CHLORINATED AROMATIC HYDROCARBONS
DATA ANALYSIS
DIFFUSION
MEASURING METHODS
NAPHTHALENE
PHENANTHRENE
SOLVENT PROPERTIES
SUPERCRITICAL GAS EXTRACTION