Determination of transfer rate constants and partition coefficients for air phase biofilters
- Reynolds Group, Tustin, CA (United States)
- Univ. of Southern California, Los Angeles, CA (United States). Dept. of Civil Engineering
The determination of transfer rate constants (k) and concentration partition coefficients (k{sub h}) is required for biofilter mathematical models. A bench-scale technique was developed and used to evaluate k and k{sub h} 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 k{sub h} values that were similar to both batch and spike test results, indicating the accuracy of the procedure. Calculated k{sub h} values for carbon dioxide were two orders of magnitude less than those for ethanol. The water content of the packing material strongly affects k{sub h} values. High water content increased k{sub h} values for ethanol and decreased k{sub h} values for carbon dioxide.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 509258
- Journal Information:
- Journal of Environmental Engineering, Journal Name: Journal of Environmental Engineering Journal Issue: 6 Vol. 123; ISSN 0733-9372; ISSN JOEEDU
- Country of Publication:
- United States
- Language:
- English
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