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Livestock waste-to-bioenergy generation opportunities
- The use of biological and thermochemical conversion (TCC) technologies in livestock waste-to-bioenergy treatments can provide livestock operators with multiple value-added, renewable energy products. These products can meet heating and power needs or serve as transportation fuels. The primary objective of this work is to present established and emerging energy conversion opportunities that can transform the treatment of livestock waste from a liability to a profit center. While biological production of methanol and hydrogen are in early research stages, anaerobic digestion is an established method of generating between 0.1 to 1.3m³ m⁻³ d⁻¹ of methane-rich biogas. The TCC processes of pyrolysis, direct liquefaction, and gasification can convert waste into gaseous fuels, combustible oils, and charcoal. Integration of biological and thermal-based conversion technologies in a farm-scale hybrid design by combining an algal CO₂-fixation treatment requiring less than 27,000m² of treatment area with the energy recovery component of wet gasification can drastically reduce CO₂ emissions and efficiently recycle nutrients. These designs have the potential to make future large scale confined animal feeding operations sustainable and environmentally benign while generating on-farm renewable energy.
Cantrell, Keri B. , Ducey, Thomas , Ro, Kyoung S. , Hunt, Patrick G.
renewable energy sources , livestock , agricultural wastes , biomass , animal manures , bioenergy , literature reviews
- Includes references
- Bioresource technology 2008 Nov., v. 99, no. 17
- [New York, NY]: Elsevier Ltd.
Journal Articles, USDA Authors, Peer-Reviewed
- Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.