« Previous AbstractA questionnaire survey for the assessment of wild-domestic pig interactions in a context oedema disease outbreaks among wild boars (Sus scrofa) in South-Eastern France    Next AbstractSesquiterpene-rich volatile constituents of Ipomoea obscura (L.) Ker-Gawl »

Environ Technol

Title:		Treatment of VOCs in biofilters inoculated with fungi and microbial consortium
Author(s):		Jorio H; Jina Y; Elmrini H; Nikiemaa J; Brzezinski R; Heitz M;
Address:		"Department of Chemical Engineering, Faculty of Engineering, Universite de Sherbrooke, Quebec, Canada"
Journal Title:		Environ Technol
Year:		2009
Volume:		30
Issue:		5
Page Number:		477 - 485
DOI:		10.1080/09593330902778849
ISSN/ISBN:		0959-3330 (Print) 0959-3330 (Linking)
Abstract:		"An experimental study on the removal of xylene vapours from an air stream was conducted on three identical upflow laboratory-scale wood-chips-based bed biofilters. Three different inoculums were used: fungi (Phanerochaete chrysosporium and Cladosporium sphaerospermum), a bacterial consortium (EVB110), and a mixed culture of fungi and EVB 110. The empty bed gas residence time was 59 s, and various inlet concentrations of the contaminant were tested. The results obtained revealed a strong correlation between the average temperature of the biofilter and the intensity of the microbial activity in the filter bed. In addition, the mass of carbon dioxide produced per mass of xylene removed was equal to 3.03, indicating elimination of the pollutant by aerobic biodegradation. The removal rates of xylene in both fungal and bacterial systems were similar up to an inlet load of 100 g m(-3) h(-1). However, a better performance was achieved in the fungal system at higher inlet loads of the pollutant. The maximum elimination capacity achieved in the fungal and bacterial systems was 77 and 58 g m(-3) h(-1), respectively; and an early set-off of the inhibition effects was observed in the latter. The bioreactor inoculated with the mixed culture was the least effective, with a maximum elimination capacity of only 38 g m(-3) h(-1). Problems with microbial population survival and competition among different types of microorganisms could be responsible of this lower performance. The fungal system was also tested for the removal of toluene vapour and achieved a maximum elimination capacity of 110 g m(-3) h(-1)"
Keywords:		Bacteria/*metabolism Bioreactors Filtration/*methods Fungi/*metabolism Volatile Organic Compounds/*isolation & purification;
Notes:		"MedlineJorio, Hasnaa Jina, Yaomin Elmrini, Hicham Nikiemaa, Josiane Brzezinski, Ryszard Heitz, Michele eng Research Support, Non-U.S. Gov't England 2009/06/11 Environ Technol. 2009 Apr 14; 30(5):477-85. doi: 10.1080/09593330902778849"