Determination of Transfer Rate Constants and Partition Coefficients for Air Phase Biofilters
Publication: Journal of Environmental Engineering
Volume 123, Issue 6
Abstract
The determination of transfer rate constants (k) and concentration partition coefficients (kh) is required for biofilter mathematical models. A bench-scale technique was developed and used to evaluate k and kh values for four different packing materials: (1) compost; (2) a mixture of compost and diatomaceous earth (DE); (3) Calgon granular activated carbon (GAC); and (4) Westates GAC. Two vapor phase contaminants were used: ethanol and carbon dioxide. Experimental results showed that this technique produced estimated kh values that were similar to both “batch” and “spike test” results, indicating the accuracy of the procedure. Calculated kh values for carbon dioxide were two orders of magnitude less than those for ethanol. The water content of the packing material strongly affects kh values. High water content increased kh values for ethanol and decreased kh values for carbon dioxide.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 123 • Issue 6 • June 1997
Pages: 577 - 585
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jun 1, 1997
Published in print: Jun 1997
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