Cyclic siloxanes in the biological waste water treatment process ? Determination, quantification and possibilities of elimination

Huppmann, René; Lohoff, Horst Werner; Schröder, Horst Friedrich

doi:10.1007/s002169600011

Cited by 60 publications

(1 citation statement)

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“…Liang et al (2001) used a polymorphous porous graphic adsorption system to remove siloxanes from biogas from an anaerobic digester, but did not report any quantitative removal efficiency. Huppmann et al (1996) suggested, based on bench-scale testing, that adsorption using resins may be a cost-effective approach in removing siloxanes as both removal and regeneration efficiencies were relatively high.…”

Section: Siloxane Removal Optionsmentioning

confidence: 99%

Siloxanes in biogases from landfills and wastewater digesters

McBean

2008

Can. J. Civ. Eng.

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Volatile methylsiloxanes and linear polydimethylsiloxanes (siloxanes), generated as components of biogases from digesters at wastewater treatment plants and solid waste landfills, have been identified as potentially causing significant operational problems. The problems are demonstrated as being an issue of ''sand in the transmission'' and are the reason for the changing of engine warrantees. Examples of monitored concentrations of siloxanes at a series of facilities are described, demonstrating degrees of variability both spatially and temporally, for different biogas sources. Wastewater digesters are shown to be generally producing biogases with higher siloxane concentrations than landfills. With a trend toward some landfills being operated as bioreactors, where the temperatures in the refuse are elevated to levels comparable to those within wastewater treatment digesters, there is potential that landfill-derived biogases may result in increased concentrations of siloxanes and hence more operating problems.Résumé : Les méthylsiloxanes volatils et les polydiméthylsiloxanes linéaires (siloxanes), des composantes de biogaz provenant de digesteurs d'usines de traitement des eaux et de sites d'enfouissement de déchets solides, ont été identifiés comme source potentielle de problèmes opérationnels. Les problèmes sont démontrés comme étant une question de « sable dans l'engrenage » et sont la raison des garanties de changement de moteurs. Les exemples de concentrations surveillées de siloxanes dans un ensemble d'installations sont décrits, démontrant divers niveaux de variabilité dans l'espace et dans le temps pour différentes sources de biogaz. Il est démontré que les digesteurs d'eaux usées produisent des biogaz à concentration plus élevée de siloxanes que les sites d'enfouissement. Avec la tendance actuelle d'exploiter certains sites d'enfouissement comme des bioréacteurs où les températures des déchets sont élevées à des niveaux similaires à ceux des digesteurs de traitement des eaux usées, il est possible que les biogaz des sites d'enfouissement augmentent les concentrations de siloxanes, générant ainsi plus de problèmes opérationnels.

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Section: Siloxane Removal Optionsmentioning

confidence: 99%

Siloxanes in biogases from landfills and wastewater digesters

McBean

2008

Can. J. Civ. Eng.

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Biodeterioration of Mineral Materials

Gaylarde

Morton

2003

Encyclopedia of Environmental Microbiology

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Biofilms and Mineral Materials Deterioration Processes Nonbiological Weathering Processes Biological Weathering—Biodeterioration and Biodegradation Silicon and Silicates Limestone, Shale, and Sandstone Cement and Concrete

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A review of biogas purification processes

Abatzoglou

Boivin

2008

Biofuels Bioprod Bioref

604

368

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Biogas is a valuable renewable energy carrier. It can be exploited directly as a fuel or as a raw material for the production of synthesis gas and/or hydrogen. Methane (CH 4 ) and carbon dioxide (CO 2 ) are the main constituents, but biogases also contain signifi cant quantities of undesirable compounds (contaminants), such as hydrogen sulfi de (H 2 S), ammonia (NH 3 ) and siloxanes. The existence and quantities of these contaminants depend on the biogas source (i.e., landfi lls, anaerobic fermentation of manure). Their presence constitutes a major problem because (i) they can be detrimental to any biogas thermal or thermocatalytic conversion device (e.g., corrosion, erosion, fouling); and (ii) they generate harmful environmental emissions. It is therefore important to include biogas purifi cation steps upstream of its fi nal use processes. This review is aimed at presenting the scientifi c and technical state-of-theart in biogas purifi cation processes. Both mature, already-applied and promising, under-development technologies are reported and described here.

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Cyclic siloxanes in the biological waste water treatment process ? Determination, quantification and possibilities of elimination

Cited by 60 publications

References 1 publication

Siloxanes in biogases from landfills and wastewater digesters

Siloxanes in biogases from landfills and wastewater digesters

Biodeterioration of Mineral Materials

A review of biogas purification processes

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