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Environmental impact of meat meal fertilizer vs. chemical fertilizer

Author

Listed:
  • Spångberg, J.
  • Hansson, P.-A.
  • Tidåker, P.
  • Jönsson, H.

Abstract

Animal by-products (ABP) are rich in nutrients and energy. This LCA study assessed and compared the environmental impact of using meat meal as fertilizer with that of using chemical fertilizer. In one system the nutrient content of ABP Category 2 was recovered and used as a meat meal fertilizer on arable land, replacing chemical fertilizers. In the other system a chemical fertilizer was used and the energy content of the ABP material recovered. The functional unit consisted of one kg of harvested spring wheat and treatment of 0.59kg of ABP Category 2. The system for nutrient recovery and chemical fertilizer replacement had lower emissions of greenhouse gases and acidification than the energy recovery system, but had higher total use of energy and eutrophying emissions. Overall, the results of the study greatly depended on the fuels replaced.

Suggested Citation

  • Spångberg, J. & Hansson, P.-A. & Tidåker, P. & Jönsson, H., 2011. "Environmental impact of meat meal fertilizer vs. chemical fertilizer," Resources, Conservation & Recycling, Elsevier, vol. 55(11), pages 1078-1086.
    • Handle: RePEc:eee:recore:v:55:y:2011:i:11:p:1078-1086
    DOI: 10.1016/j.resconrec.2011.06.002
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