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Water Sci Technol

Title:		Volatile organic silicon compounds: the most undesirable contaminants in biogases
Author(s):		Ohannessian A; Desjardin V; Chatain V; Germain P;
Address:		"Laboratory of Civil & Environmental Engineering, Institut National des Sciences Appliquees de Lyon, 9 rue de la Physique, 20 av. A. Einstein, 69621 Villeurbanne Cedex, France. aurelie.ohannessian@insa-lyon.fr"
Journal Title:		Water Sci Technol
Year:		2008
Volume:		58
Issue:		9
Page Number:		1775 - 1781
DOI:		10.2166/wst.2008.498
ISSN/ISBN:		0273-1223 (Print) 0273-1223 (Linking)
Abstract:		"Recently a lot of attention has been focused on volatile organic silicon compounds (VOSiC) present in biogases. They induce costly problems due to silicate formation during biogas combustion in valorisation engine. The cost of converting landfill gas and digester gas into electricity is adversely affected by this undesirable presence. VOSiC in biogases spark off formation of silicate deposits in combustion chambers. They engender abrasion of the inner surfaces leading to serious damage, which causes frequent service interruptions, thus reducing the economic benefit of biogases. It is already known that these VOSiC originate from polydimethylsiloxanes (PDMS) hydrolysis. PDMS (silicones) are used in a wide range of consumer and industrial applications. PDMS are released into the environment through landfills and wastewater treatment plants. There is a lack of knowledge concerning PDMS biodegradation during waste storage. Consequently, understanding PDMS behaviour in landfill cells and in sludge digester is particularly important. In this article, we focused on microbial degradation of PDMS through laboratory experiments. Preliminary test concerning anaerobic biodegradation of various PDMS have been investigated. Results demonstrate that the biotic step has an obvious influence on PDMS biodegradation"
Keywords:		Air Pollutants/*analysis/metabolism Anaerobiosis Bacteria/isolation & purification/metabolism Base Sequence DNA Primers Gases/*chemistry Silicon Compounds/*analysis/metabolism Volatile Organic Compounds/*analysis/metabolism;
Notes:		"MedlineOhannessian, Aurelie Desjardin, Valerie Chatain, Vincent Germain, Patrick eng England 2008/11/26 Water Sci Technol. 2008; 58(9):1775-81. doi: 10.2166/wst.2008.498"