Separation of volatile organic compounds by pervaporation for a binary compound combination: Trichloroethylene and 1,1,1-trichloroethane

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie00038a035· OSTI ID:183124

Visvanathan, C; Basu, B ^[1]; Mora, J C ^[2]

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1. Asian Inst. of Tech., Bangkok (Thailand). Environmental Engineering Program
2. Inst. National Polytechnique de Toulouse (France)

This study evaluates the behavior of sweeping air pervaporation when used to separate trichloroethylene (TCE) and 1,1,1-trichloroethane (TCEthane) from wastewater. Selectivity and membrane preference are studied. Models for binary compounds are studied to evaluate the extent of cross influence on TCE flux due to the presence of another volatile organic compound, TCEthane. Using the models, the integral dry diffusion coefficient for TCEthane is evaluated. Results indicate that the membrane exhibits a preference for TCE over TCEthane. However, the values of the diffusion rates are found to be comparable. Selectivity values are found to be independent of the air flow rate but dependent on the relative concentration of the compounds in the feed solution. It is found that, due to the presence of TCEthane, the flux of TCE decreased. Further, it is found that the ratio of the integral dry diffusion coefficients of the compounds is inversely proportional to the ratio of their molecular weights.

• Sponsoring Organization: USDOE
• OSTI ID: 183124
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 11 Vol. 34; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CHLORINATED ALIPHATIC HYDROCARBONS
CONCENTRATION RATIO
MEMBRANE TRANSPORT
MEMBRANES
PERFORMANCE
VOLATILE MATTER
WASTE WATER
WATER TREATMENT