Producing animal feed from process leftovers can result in a negative carbon footprint
Is it true that producing animal feed from process leftovers can result in a negative carbon footprint?
Yes. Multiple life-cycle assessment and circular bioeconomy studies indicate that utilizing process leftovers and agricultural by-products for animal and livestock feed reduces greenhouse gas emissions, with certain pathways like biochar integration offering potential negative emissions.
Verdict: SUPPORTED · 3 sources for, 0 against · Last checked
The retrieved papers include studies showing that incorporating process leftovers and by-products into animal feed reduces the carbon footprint (one study), that insect bioconversion of waste creates sustainable feed components (one study), and that biochar derived from residues can be used as a feed additive to achieve carbon sequestration and negative emissions (one study). None of the provided papers refute the claim.
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Azzi, E., Karltun, E., & Sundberg, C. (2019). Prospective Life Cycle Assessment of Large-Scale Biochar Production and Use for Negative Emissions in Stockholm.. doi.org. https://doi.org/10.1021/acs.est.9b01615
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Sabia, E., Braghieri, A., Vignozzi, L., Paolino, R., Cosentino, C., Trana, A. D., & Pacelli, C. (2025). Carbon Footprint of By-Product Concentrate Feed: A Case Study. doi.org. https://doi.org/10.3390/environments12020042
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MR, T., S, L., F, W., H, W., Q, M., Z, Z., C, Z., Y, L., Y, L., K, U. R., M, H., J, Q., & C, L. (2025). Black Soldier Fly: A Keystone Species for the Future of Sustainable Waste Management and Nutritional Resource Development: A Review.. doi.org. https://doi.org/10.3390/insects16080750
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