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Inexpensive biogas Conditioning for small Digesters

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  International Symposium on Air Quality and Manure Management for Agriculture Conference Proceedings, 13-16 September 2010, Dallas, Texas  711P0510cd.(doi:10.13031/2013.32678)
Authors:   Carl S Hansen, Conly L Hansen
Keywords:   Keywords: Biogas Cleaning, Biofuel, Renewable energy, Green Power, Anaerobic Digestion,

There are a growing number of anaerobic digesters being used on animal feeding operations both for pollution control and for energy production. Most anaerobic digester projects use the biogas produced to generate electricity. However, the generation of electricity alone does not produce enough income in order to create an economic rate of return for the construction and operation of the anaerobic digester system (See: Analysis of Energy Production Costs from Anaerobic Digestion NRCS, web site October, 2007). Because of the present high cost of fuels, revenues form anaerobic digestion (AD) could increase two fold if a farmer or other captive fleet operators could use biogas as a fuel for their automobiles, farm equipment, and fleet vehicles. AD could become economically feasible and would encourage the installation of these pollution preventing digester systems. However, impurities in the biogas have been a major obstacle to using biogas as a vehicle fuel. Traditional methods of biogas cleaning have been expensive, messy to maintain or unreliable.

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