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Addressing Concerns With Volatile Organic Silicon Compounds (VOSC) Using Reciprocating Engines in Biosolids to Energy Projects

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Wastewater professionals are investigating measures to stabilize costs associated with energy at their facilities. Additionally, the desire to reduce carbon footprint and increase sustainability through optimizing all of their resources has caused a new interest in converting anaerobic digester gas to energy. Beyond the production of electricity and heat, the most significant talking point for interested parties is how to treat the digester gas itself, specifically addressing concerns over the presence of volatile organic silicon compounds (VOSC). Numerous wastewater facilities have reported the presence of siloxanes. Siloxanes are detrimental to gas reciprocating engines reducing engine efficiency, increasing emissions, and physically damaging engine parts and components. This paper provides a background on siloxanes and their prevalence, investigates their effects on engine applications, and presents solutions to removing them from digester gas.
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Keywords: activated carbon; anaerobic digestion; digester gas; reciprocating engines; siloxanes

Document Type: Research Article

Publication date: 01 January 2009

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