Siloxane removal from landfill and digester gas – A technology overview

This paper reviews technologies for the removal of volatile methyl siloxanes (VMS) from biogas. More than 20 years after identifying silicon dioxide in gas engines running on landfill and sewage gas, three technologies are commercially available to remove siloxanes today: adsorption, absorption and...

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Bibliographic Details
Published in:Bioresource technology 2010-05, Vol.101 (9), p.2913-2923
Main Authors: Ajhar, M., Travesset, M., Yüce, S., Melin, T.
Format: Article
Language:English
Subjects:
Applied sciences
Biodegradation, Environmental
Biofuel production
Biogas
Biological and medical sciences
Biotechnology
Catalysis
Catalysts
Cooling
Energy
Exact sciences and technology
Filtration
Fundamental and applied biological sciences. Psychology
Gases - chemistry
Industrial applications and implications. Economical aspects
Landfill gas
Landfills
Pollution
Purification
Removal
Sewage
Siloxanes
Siloxanes - chemistry
Siloxanes - isolation & purification
Sludge
Sorption
Volatile methyl siloxane
Waste Disposal, Fluid - methods
Wastes
Water Pollutants, Chemical - isolation & purification
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Summary:This paper reviews technologies for the removal of volatile methyl siloxanes (VMS) from biogas. More than 20 years after identifying silicon dioxide in gas engines running on landfill and sewage gas, three technologies are commercially available to remove siloxanes today: adsorption, absorption and deep chilling. Newer concepts based on technologies other than sorption or condensation have not yet gained access to commercial biogas purification. These emerging siloxane removal concepts include biotrickling filters, catalysts, membranes, and in the case of sewage gas, sludge stripping, peroxidation and filtration at point inlet source. This work introduces the main principles of commercial siloxane removal systems and reviews scientific progress in the field over the last decade.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2009.12.018