Document Detail


Performance of a styrene-degrading biofilter containing the yeast Exophiala jeanselmei.
MedLine Citation:
PMID:  18633979     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A general mathematical model developed for a description of pollutant degradation in a biofilm was used to evaluate the performance of a biofilter for the purification of styrene-containing gas. The biofilter contained perlite as an inert support on which a biofilm was present composed of a mixed microbial population containing the fungus Exophiala jeanselmei as a major styrene-degrading microorganism. Although styrene is a moderately hydrophobic compound, the biofilter was reaction limited at a styrene gas phase concentration of 0.1-2.4 g/m(3). Limitation of biofilter performance by the mass transfer of styrene was only observed at styrene concentrations lower than 0.06 g/m(3). A maximal styrene degradation rate of 62 g/(m(3). h) was maintained for over 1 year. At a high styrene concentration, the maximal styrene degradation rate could be increased to 91 g/(m(3). h) by increasing the oxygen concentration in the gas from 20 to 40%. After 300 days of operation, the dry-weight biomass concentration of the filter bed was 41% (w/w), and an average biofilm thickness of 240-280 microm, but maximal up to 600 microm, was observed. Experimental results and model calculations indicated an effective biofilm thickness of about 80 microm. It is postulated that the thickness of the effective biofilm is determined by the oxygen availability in the biofilm.
Authors:
H H Cox; R E Moerman; S van Baalen; W N van Heiningen; H J Doddema; W Harder
Related Documents :
17390839 - Induction of phytoalexins biosynthesis in orange fruit by the biocontrol yeast rhodotor...
7900379 - Existence of a silent gene for pseudocholinesterase in a trinidad population.
24075439 - Maternal mortality profile in great abc region from 1997 to 2005.
8682109 - Molecular biological and quantitative abnormalities of adp/atp carrier protein in cardi...
3479599 - Effect of timing of progesterone administration on pregnancy rate after embryo transfer...
24015369 - An increase in neural tube defect notifications, south australia, 2009-2010.
23093259 - An overview of central fetal monitoring systems in labour.
7878749 - Variables affecting birthweight and graft survival in 197 pregnancies in cyclosporine-t...
23929909 - Increased prevalence of congenital heart defects in monozygotic and dizygotic twins.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biotechnology and bioengineering     Volume:  53     ISSN:  0006-3592     ISO Abbreviation:  Biotechnol. Bioeng.     Publication Date:  1997 Feb 
Date Detail:
Created Date:  2008-07-17     Completed Date:  2009-12-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7502021     Medline TA:  Biotechnol Bioeng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  259-66     Citation Subset:  -    
Affiliation:
Department of Environmental Biotechnology, TNO Institute of Environmental Sciences, Energy Research and Process Innovation, PO Box 6011, 2600 JA Delft, The Netherlands.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Identification of linearity in the biofilm process and its operational utility.
Next Document:  Development of a new reversed micelle liquid emulsion membrane for protein extraction.