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J Biotechnol

Title:		Fungal biocatalysts in the biofiltration of VOC-polluted air
Author(s):		Kennes C; Veiga MC;
Address:		"Chemical Engineering Laboratory, Faculty of Sciences, Campus da Zapateira, University of La Coruna, E-15071, Spain. Kennes@udc.es"
Journal Title:		J Biotechnol
Year:		2004
Volume:		113
Issue:		1-Mar
Page Number:		305 - 319
DOI:		10.1016/j.jbiotec.2004.04.037
ISSN/ISBN:		0168-1656 (Print) 0168-1656 (Linking)
Abstract:		"Gas-phase biofilters used for the treatment of waste gases were originally packed with compost or other natural filter beds containing indigenous microorganisms. Over the past decade much effort has been made to develop new carrier materials, more performant biocatalysts and new types of bioreactors. Elimination capacities reached nowadays are 5 to 10 times higher than those originally reported with conventional compost biofilters. With the recently developed inert filter beds, inoculation is a prerequisite for successful start-up and operation. Either non-defined mixed cultures or pure bacterial cultures have originally been used. The search for efficient fungal biocatalysts started only a few years ago, mainly for the biofiltration of waste gases containing hydrophobic compounds, such as styrene, alpha-pinene, benzene, or alkylbenzenes. In this review, recently isolated new fungal strains able to degrade alkylbenzenes and other related volatile organic pollutants are described, as well as their major characteristics and their use as biocatalysts in gas-phase biofilters for air pollution control. In biofiltration, the most extensively studied organism belongs to the genus Exophiala, although strains of Scedosporium, Paecilomyces, Cladosporium, Cladophialophora, and white-rot fungi are all potential candidates for use in biofilters. Encouraging results were obtained in most of the cases in which some of those organisms were present in gas-phase biofilters. They allow reaching high elimination capacities and are resistant to low pH values and to reduce moisture content"
Keywords:		"Air Pollution/*prevention & control Biodegradation, Environmental Biotechnology/*methods Exophiala/*metabolism Filtration/*methods Organic Chemicals/*metabolism;"
Notes:		"MedlineKennes, Christian Veiga, Maria C eng Research Support, Non-U.S. Gov't Review Netherlands 2004/09/24 J Biotechnol. 2004 Sep 30; 113(1-3):305-19. doi: 10.1016/j.jbiotec.2004.04.037"