Document Detail


Kinetic evaluation of contaminants removal in a three-stage biological air filter.
MedLine Citation:
PMID:  22775059     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Biofiltration is a cost-effective technology for removing air contaminants from animal facilities. Kinetic analysis can aid in understanding and designing the process, but has not been performed on full-scale filters treating complex mixtures. In this study, kinetics was investigated in a full-scale biological filter treating air pollutants from a pig facility. Due to the high air flow rates used in the filter, both a plug flow model and a model based on complete mixing were tested with respect to kinetic order and Michaelis-menten kinetics. Application of these models only gave poor to moderate agreement with air filter removal data. Two alternative kinetic models (Stover-Kincannon model and Grau second-order model) adopted from wastewater biofiltration process analysis were introduced to analyze contaminants removal in the biological air filter. Data analysis demonstrated the applicability of these two models with a high degree of precision on contaminants removal in the biological air filter. Whereas the Stover-Kincannon model demonstrated that pollutant removal rates were related to the mass loading rates, the Grau second-order kinetic model indicated that the removal efficiencies were dependent on air loading rates. The kinetic data can therefore be used for comparing biofilter performance and for design purposes.
Authors:
Dezhao Liu; Michael Jørgen Hansen; Lise Bonne Guldberg; Anders Feilberg
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-9
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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