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PR - Economic Analysis Of Anerobic Co-digestion Using Dairy Manure And Byproduct Feedstocks

Author

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  • Neibergs, J.S.
  • Harrison, J.
  • Whitefield, E.

Abstract

There is increasing interest in the United States to expand the use of anaerobic digestion (AD) as a means to generate renewable energy and reduce greenhouse gas emissions from dairy operations. Economic feasibility is the primary constraint facing farmers and investors considering an AD capital investment. The purpose of this paper is to develop an economic optimization model of an AD system using co-digestion of dairy manure and byproduct feedstocks. This model uses a daily time step to specifically model the operating parameters and AD technical design and capacity constraints. The end of system digestate is applied to farm land subject to agronomic application rates and timings. The model is applied to an existing AD system producing electricity in Washington State. The paper reports the technical aspects and operating parameters of the modeled AD system. The economic results conclude a positive economic feasibility but a low rate of return for the modeled system. The conclusions suggest evaluate alternative AD design options and AD evaluation methods to increase the economic feasibility of AD systems for dairies.

Suggested Citation

  • Neibergs, J.S. & Harrison, J. & Whitefield, E., 2013. "PR - Economic Analysis Of Anerobic Co-digestion Using Dairy Manure And Byproduct Feedstocks," 19th Congress, Warsaw, Poland, 2013 345686, International Farm Management Association.
    • Handle: RePEc:ags:ifma13:345686
    DOI: 10.22004/ag.econ.345686
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    References listed on IDEAS

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    1. Leuer, Elizabeth R. & Hyde, Jeffrey & Richard, Tom L., 2008. "Investing in Methane Digesters on Pennsylvania Dairy Farms: Implication of Scale Economies and Environmental Programs," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 37(2), pages 1-16.
    2. Leuer, Elizabeth R. & Hyde, Jeffrey & Richard, Tom L., 2008. "Investing in Methane Digesters on Pennsylvania Dairy Farms: Implications of Scale Economies and Environmental Programs," Agricultural and Resource Economics Review, Cambridge University Press, vol. 37(2), pages 188-203, October.
    3. Clark P. Bishop & C. Richard Shumway, 2009. "The Economics of Dairy Anaerobic Digestion with Coproduct Marketing," Review of Agricultural Economics, Agricultural and Applied Economics Association, vol. 31(3), pages 394-410, September.
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