Binary adsorption equilibrium of organics and water on activated carbon

article




Linders, M.J.G.

Broeke, L.J.P. van den

Kapteijn, F.

Moulijn, J.A.

Bokhoven, J.J.G.M. van
Adsorption isotherms of hexafluoropropylene (HFP), methanol and ethanol were measured under dry and humid conditions using Norit R1 carbon. The presence of water lowered the HFP capacity over the whole pressure range as compared to the single component isotherm, while increasing the methanol and ethanol capacity. The Dubinin-Radushkevich equation was applicable for methanol, and ethanol, and the Dubinin-Astakhov equation gave a satisfactory description for water. The ideal adsorbed solution (IAS) theory satisfactorily described the binary, miscible systems of methanol and ethanol with water. Because water and HFP are not miscible, the IAS theory cannot be used. This binary system was described well by the independent co-adsorption of the two components, that is, HFP vapor is adsorbed in the micropore volume left free by water.
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AdsorptionEthanolIsothermsMethanol 67-56-1Water 7732-18-5Binary adsorption equilibriumActivated carbon 64365-11-3, 82228-96-4Alcohol 64-17-5Organic compoundPropylene 115-07-1SeparationAdsorption kineticsHumidityMathematical analysisMeasurementMiscibilityPressureThermodynamicsVapor
TNO Identifier
236170
Repository link
https://resolver.tno.nl/uuid:cec2ff3f-7fed-49ae-a3ee-4e941ede4b45
ISSN
0001-1541
Source
AIChE Journal, 47(8), pp. 1885-1892.
Pages
1885-1892
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