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

Journal Article · Sun Feb 15 04:00:00 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, Journal Name: Environmental Science and Technology Journal Issue: 4 Vol. 43; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

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