Document Detail

Comparative studies on toluene removal and pressure drop in biofilters using different packing materials.
MedLine Citation:
PMID:  21047004     Owner:  NLM     Status:  MEDLINE    
To select the best available packing material for malodorous organic gases such as toluene and benzene, biofilter performance was compared in biofilters employed different packing materials including porous ceramic (celite), Jeju scoria (lava), a mixture of granular activated carbon (GAC) and celite (GAC/celite), and cubic polyurethane foam (PU). A toluene-degrading bacterium, Stenotrophomonas maltophilia T3-c, was used as the inoculum. The maximum elimination capacities in the celite, lava, and GAC/celite biofilters were 100, 130, and 110 gm(-3) hr(-1), respectively. The elimination capacity for the PU biofilter was approximately 350 g m(-3) hr(-1) at an inlet loading of approximately 430 g m(-3) hr(-1), which was 2 to 3.5 times higher than for the other biofilters. The pressure drop gradually increased in the GAC/ celite, celite and lava biofilters after 23 day due to bacterial over-growth, and the toluene removal efficiency remarkably decreased with increasing pressure drop. Backwashing method was not effective for the control of biomass in these biofilters. In the PU biofilter however, backwashing allowed maintenance of a pressure drop of 1 to 3 mm H2O m(-1) and a removal efficiency of > 80%, indicating that the PU was the best packing material for toluene removal among the packing materials tested.
Hee Wook Ryu; So Jung Kim; Kyung Suk Cho
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental biology / Academy of Environmental Biology, India     Volume:  31     ISSN:  0254-8704     ISO Abbreviation:  J Environ Biol     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-11-04     Completed Date:  2010-11-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8300544     Medline TA:  J Environ Biol     Country:  India    
Other Details:
Languages:  eng     Pagination:  315-8     Citation Subset:  IM    
Department of Chemical and Environmental Engineering, Soongsil University, Seoul 156- 743, Korea.
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MeSH Terms
Air Pollution / prevention & control*
Biodegradation, Environmental
Diatomaceous Earth
Toluene / metabolism*
Volatile Organic Compounds / analysis
Reg. No./Substance:
0/Ceramics; 0/Volatile Organic Compounds; 108-88-3/Toluene; 16291-96-6/Charcoal; 61790-53-2/Diatomaceous Earth

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