Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1165073
Title: Livestock waste management for energy recovery in Brazil: a life cycle assessment approach.
Authors: HOLLAS, C. H.
AMARAL, K. G. C. do
LANGE, M. V.
HIGARASHI, M. M.
STEINMETZ, R. L. R.
MARIANI, L. F.
NAKANO, V.
PEREIRA, A. S.
JANNUZZI, G. de M.
KUNZ, A.
Affiliation: CAMILA ESTER HOLLAS, UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ
KARINA GUEDES CUBAS DO AMARAL, INSTITUTO 17
MARCELA VALLES LANGE, INSTITUTO 17
MARTHA MAYUMI HIGARASHI, CNPSA
RICARDO LUIS RADIS STEINMETZ, CNPSA
LEIDIANE FERRONATO MARIANI, INSTITUTO 17
VANICE NAKANO, INSTITUTO 17
ALESSANDRO SANCHES‑PEREIRA, CURTIN UNIVERSITY SUSTAINABILITY POLICY INSTITUTE
GILBERTO DE MARTINO JANNUZZI, UNIVERSIDADE ESTADUAL DE CAMPINAS
AIRTON KUNZ, CNPSA.
Date Issued: 2024
Citation: Environmental Science and Pollution Research, v. 31, p. 4705-4720, 2024.
Description: Abstract: Livestock farming has exerted intense environmental pressure on our planet. The high emissions to the environment and the high demands of resources for the production process have encouraged the search for decarbonization and circularity in the livestock sector. In this context, the objective of this study was to evaluate and compare the environmental performance of two different uses for biogas generated in the anaerobic digestion of animal waste, either for electricity generation or biomethane. For this purpose, a life cycle assessment approach was applied to evaluate the potential of anaerobic digestion as a management technology for three different livestock wastes, related to beef cattle, dairy, and sheep in the Brazilian animal production context. The results suggest that the treatment scenarios focusing on biomethane generation were able to mitigate the highest percentage of damages (77 to 108%) in the global warming category when compared to the scenarios without the use of anaerobic digestion (3.00·102 to 3.71·103 kgCO2 eq) or in the perspective of electricity generation (mitigation of 74 to 96%). In terms of freshwater eutrophication, the generation of electricity (− 2.17·10−2 to 2.31·10−3 kg P eq) is more favorable than the purification of biogas to biomethane (− 1.73·10−2 to 2.44·10−3 kg P eq), due to the loss of methane in the upgrading process. In terms of terrestrial ecotoxicity, all scenarios are very similar, with negative values (− 1.19·101 to − 7.17·102 kg 1,4-DCB) due to the benefit of nutrient recovery, especially nitrogen, associated with the use of digestate as fertilizer, which was one of the critical points in all scenarios. Based on these results, it is evident that proper management of all stages of the treatment life cycle is the key to decarbonization and circularity in livestock waste management. The biogas use does not present different effects on the environmental performance of the scenarios studied, demonstrating that the purpose should be chosen according to the needs of each plant or management system.
Thesagro: Biogás
Digestão Anaeróbia
Eliminação de Resíduo
NAL Thesaurus: Anaerobic digestion
Animal manures
Keywords: Economia circular
Estrume
Transformação de resíduos em energia
Biometano
Circular economy
Waste to energy
Biomethane
DOI: https://doi.org/10.1007/s11356-023-31452-1
Type of Material: Artigo de periódico
Access: openAccess
Appears in Collections:Artigo em periódico indexado (CNPSA)

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