Separation of a toluene/ethanol mixture by pervaporation using active carbon-filled polymeric membranes

Journal Article · Tue Feb 01 00:00:00 EST 1994 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399408002488· OSTI ID:7044776

Duval, J M ^[1]; Folkers, B; Mulder, M H.V.; Smolders, C A ^[2]; Desgrandchamps, G ^[3]

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1. Manufacture Francaise des Pneumatiques Michelin, Clermont Ferrand (France)
2. Univ. of Twente, Enschede (Netherlands)
3. Elf Aquitaine, Artix (France)

In order to improve the separation properties of dense polymeric membranes toward a toluene/ethanol mixture, various active carbons and two types of zeolites were introduced into a thin polymeric film in order to form a heterogeneous membrane composed of solid particles surrounded by a polymer phase. Active carbons show a high adsorption selectivity for an aromatic compound over ethanol in the low concentration range of the aromatic component. Sorption and pervaporation experiments were carried out with a toluene/ethanol mixture, and they showed no improvement in selectivity and a decrease in flux for membranes filled with active carbons. For zeolite-filled membranes, both selectivity and flux decreased. A permeability model derived for heterogeneous systems was used. It confirmed that the carbon particles have a closed porous structure, allowing no transport from one side to the other, and that the zeolites have an ethanol selective permeation behavior. 21 refs., 7 figs., 6 tabs.

• OSTI ID: 7044776
• Journal Information: Separation Science and Technology; (United States), Vol. 29:3; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACTIVATED CARBON
POROSITY
ETHANOL
ADSORPTION
MEMBRANES
PERMEABILITY
SURFACE PROPERTIES
MIXTURES
SEPARATION PROCESSES
RUBBERS
TOLUENE
ZEOLITES
COMPILED DATA
COPOLYMERS
MATHEMATICAL MODELS
ORGANIC POLYMERS
THIN FILMS
ADSORBENTS
ALCOHOLS
ALKYLATED AROMATICS
AROMATICS
CARBON
DATA
DISPERSIONS
ELASTOMERS
ELEMENTS
FILMS
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
POLYMERS
SILICATE MINERALS
SORPTION
400105* - Separation Procedures
400201 - Chemical & Physicochemical Properties