Modeling the heat and mass transfers in temperature-swing adsorption of volatile organic compounds onto activated carbons

Journal Article · Sun Feb 15 00:00:00 EST 2009 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es801494a· OSTI ID:21150583

Giraudet, Sylvain; Pre, Pascaline; Cloirec, Pierre Le ^[1]

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1. Ecole des Mines de Nantes, Nantes (France)

A theoretical model was built to simulate the adsorption of volatile organic compounds (VOCs) onto activated carbons in a fixed bed. This model was validated on a set of experimental data obtained for the adsorption of acetone, ethyl formate, and dichloromethane onto five commercial activated carbons. The influence of operating conditions was modeled with various VOC contents at the inlet of the adsorber and superficial velocities of the gas-phase from 0.14 to 0.28 m.s{sup -1}. Breakthrough times and maximum temperature rises were computed with a coefficient of determination of 0.988 and 0.901, respectively. The simulation was then extended to the adsorption of mixtures of VOCs. From the comparison of simulation and experimental results, the advantage of accounting for dispersions of heat and mass is shown and the importance in taking into account the temperature effect on the equilibrium data is demonstrated. 29 refs., 6 figs., 1 tab.

• OSTI ID: 21150583
• Journal Information: Environmental Science and Technology, Vol. 43, Issue 4; Other Information: [e-mail]; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
54 ENVIRONMENTAL SCIENCES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
VOLATILE MATTER
ORGANIC COMPOUNDS
ACTIVATED CARBON
ADSORPTION
ACETONE
TEMPERATURE DEPENDENCE
HEAT TRANSFER
MASS TRANSFER
MATHEMATICAL MODELS
DISPERSIONS
BINARY MIXTURES
ADSORPTION ISOTHERMS
METHYLENE CHLORIDE
SOLVENTS
MASS BALANCE
ENERGY BALANCE
SORPTIVE PROPERTIES
OXIDATION
COCONUTS
WOOD
OLIVES
COAL
ORGANIC WASTES
PACKED BED