Abstract：
:The kinetics of microbial growth and the biodegradation of methanol and toluene in (a) biofilters (BFs), and (b) biotrickling filters (BTFs), packed with inert materials, has been studied and analyzed. The specific growth rate, mu, for the treatment of methanol was 0.037h(-1) for a wide range of operating conditions. In the BF, mu was found to be a function of the methanol and toluene concentrations in the biofilm. In the BF used for treating methanol, mu was found to be affected by (1) the nitrogen concentration present in the nutrient solution, and (2) the kind of packing material employed. The kinetics of the methanol and toluene biodegradations were also analyzed using "mixed order" models. A Michaelis-Menten model type provided a good fit for the elimination capacity (EC) of the BTF treating methanol, while a Haldane model type provided a good fit to the EC of the BF treating methanol and toluene. The carbon dioxide production rate was related to the packed bed temperature and the content of the volatile solids within the biofilm. For the BF, the ratio of temperature/carbon dioxide production rate (PCO(2)) was 0.024 degrees C per unit of PCO(2), and for the BTF it was 0.15 degrees C per unit of PCO(2).
journal_name
J Biotechnoljournal_title
Journal of biotechnologyauthors
Avalos Ramirez A,Bénard S,Giroir-Fendler A,Jones JP,Heitz Mdoi
10.1016/j.jbiotec.2008.08.001subject
Has Abstractpub_date
2008-11-25 00:00:00pages
88-95issue
3-4eissn
0168-1656issn
1873-4863pii
S0168-1656(08)02320-1journal_volume
138pub_type
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