Final-biogas report2 2008
UPEI Department of Engineering
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Biogas-Report-Final
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- UPEI Department of Engineering 550 University Avenue Charlottetown PEI C1A 4P3
- AgSTAR handbook and software
UPEI Department of Engineering
550 University Avenue Charlottetown PEI C1A 4P3 Page 30 of 55 IV. Conclusion Conventional wisdom in the agricultural industry is that biogas production from dairy farms smaller than 60 milking cows, or equivalent numbers of beef cattle in a barn are not practical. Meanwhile, tiny biogas production systems operate in many countries of the world on waste from a subsistence farm including a single cow plus a household of 4 or more people. There is clearly a huge disconnect between our industrialized agricultural wisdom and experience in other countries. Commercial manufacturers have been installing systems in Canada and the United States for on- farm biogas that handle manure, but augment it with a substantial amount of non-manure additional materials. Doing so allows a large digestion system, permitting economies of scale. Such systems can continuously fuel electrical generators larger than several hundred kW. This report has looked at issues around the implementation of biogas on a typical livestock farm on PEI, whether for dairy or beef cattle. There is no technical limitation, nor regulatory one for the establishment of a small on-farm digester which could generate sufficient electricity to more than supply the farm’s average electrical needs. The technical challenge in building a small biogas plant will be in finding suitable small-size and price components for such system that can be accommodated in a reasonable capital budget. II. UPEI Department of Engineering 550 University Avenue Charlottetown PEI C1A 4P3 Page 31 of 55 V. References [1] PEI Dept of Agriculture: Agriculture on Prince Edward Island. www.gov.pe.ca , 2009(3/30/2009), [2] AgSTAR handbook and software. [[Online]]. 2008(6/2/2008), Available: http://www.epa.gov/agstar/resources/handbook.html [3] S. E. Koonin. (2006, 01/27). Getting serious about biofuels. Science 311(576), pp. 435-435. [4] S. Carr. (2007, 02/10). Biofuel bonanza set to save the nation. Crops pp. 32-32. [5] R. Smith. (2007, 03/08). New partner in agriculture energy coalition. (cover story). Southwest Farm Press 34pp. 1-7. [6] US study questions biofuel benefit. IEE Rev 51pp. 16-16. [7] DOE plans third biofuels R&D center. Chemical & Engineering News 85pp. 58-58. [8] R. Samson, S. Mani, R. Boddey, S. Sokhansanj, D. Quesada, S. Urquiaga, V. Reis and C. Ho Lem. (2005, The potential of C 4 perennial grasses for developing a global BIOHEAT industry. Crit. Rev. Plant Sci. 24(5), pp. 461-495. [9] G. Stephanopoulos. (2007, 02/09). Challenges in engineering microbes for biofuels production. Science 315(581), pp. 801-804. [10] Biomass facility uses energy crops, wood and ag by-products. Biocycle 47pp. 51-51. [11] Anaerobic digesters continue growth in U.S. livestock market. AgSTAR, Available: http://www.epa.gov/agstar/pdf/2007_digester_update.pdf [12] Haubenschild dairy farm digester. 2008(June), Available: http://www.mnproject.org/e- haubenschildfarm.html [13] A. Trivett. Directions for renewable energy in canada's smallest province. Presented at Renewables 2004: International Conference on New and Renewable Energy Technologies for Sustainable Development. [electronic]. |
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