Switchgrass
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Bioenergy > Feedstocks > Cellulosic feedstocks > Switchgrass
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Switchgrass is the perennial herbaceous prairiegrass Panicum virgatum native to the Great Plains of North America. It is considered a prime candidate for a cellulosic ethanol or other bioenergy feedstock in North America, as it has a very high biomass yield per acre with low-inputs and fertilizers.
News
- DOE and USDA Award $24 Million in Biomass Grants, 18 November 2009 by EERE News: "DOE and the U.S. Department of Agriculture (USDA) announced on November 12 more than $24 million in grants for the research and development (R&D) of biofuels, bioenergy, and high-value biobased products. The grants will support a dozen projects aimed at increasing the availability of biofuels and other products produced from biomass."
- In Search of Wildlife-friendly Biofuels: Could Native Prairie Plants Be the Answer, 29 September 2009 by NewsWise/Michigan Technological University: "The unintended consequence of crop-based biofuels may be the loss of wildlife habitat, particularly that of the birds who call this country’s grasslands home, say researchers from Michigan Technological University and The Nature Conservancy."
- "What’s the solution? There are at least two ways to produce bioenergy without destroying wildlife [and habitat], the researchers say. One is to use biomass sources that don’t require additional land, such as agricultural residues and other wastes from municipal, animal, food and forestry industries."
- "Another is to grow native perennials such as switchgrass and big bluestem. The natural diversity of prairie plants offers many benefits, including increased carbon storage in the soil, erosion control and the maintenance of insect diversity, which does double duty by providing food for birds and helping to pollinate nearby crops."[2]
- Bioelectricity Beats Biofuel, 16 June 2009 by LiveScience: "Biofuels such as ethanol were once thought of as planet-savers....[but] a new study calculates that bioelectricity used for battery-powered vehicles would deliver an average of 80 percent more miles of transportation per acre of crops."
- "...a small SUV powered by bioelectricity could travel nearly 14,000 highway miles on the net energy produced from an acre of switchgrass, while a comparable internal combustion vehicle could only travel about 9,000 miles on the highway."
- "'The internal combustion engine just isn't very efficient, especially when compared to electric vehicles...Even the best ethanol-producing technologies with hybrid vehicles aren't enough to overcome this.'" [3]
- Worldwatch & Sierra Club Outline Smart Choices for Biofuels, 19 February 2009 by RenewableEnergyWorld.com: "The Sierra Club and Worldwatch Institute have released a new report, "Smart Choices for Biofuels" (PDF file), that highlights the need for policy reforms to increase the use of biofuels in the U.S."
- "The steps proposed in the report to increase production include an accelerated transition to cellulosic feedstocks such as switchgrass and the use of more effective agricultural practices to decrease erosion and soil nutrient depletion."[4]
- Grass biofuels 'cut CO2 by 94%', 8 January 2008, by BBC News: A new report by US researchers has found that fast-growing "switchgrass-derived ethanol produced 540% more energy than was required to manufacture the fuel" and "delivers vast savings of carbon dioxide emissions compared with petrol." The paper, "Net energy of cellulosic ethanol from switchgrass (PDF file)" in the Proceedings of the National Academy of Sciences, analyzed all of the energy input factors, including "nitrogen fertiliser, herbicides, diesel and seed production."
- Family sees hot promise in pellets, 30 April 2007 from the Times Leader. A family company will produce a portable machine to create biomass pellets from switchgrass. The pellets can be used as a substitute for heating oil.
Publications
See books, reports, scientific papers, position papers and websites for additional useful resources.
- Adoption Subsidies and Environmental Impacts of Alternative Energy Crops by Bruce A. Babcock, Philip W. Gassman, Manoj Jha, Catherine L. Kling; Center for Agricultural and Renewable Development, Iowa State University, March 2007. Provides "estimates of the costs associated with inducing substantial conversion of land from production of traditional crops to switchgrass" and examines "potential environmental consequences of conversion".
- Costs of Producing Switchgrass for Biomass in Southern Iowa (pdf) by Michael D. Duffy and Virginie Y. Nanhou; Reprinted from: Trends in new crops and new uses. 2002. J. Janick and A. Whipkey (eds.). ASHS Press, Alexandria, VA.
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