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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/78264

    Título
    A biorefinery approach to recover nutrients, proteins, and methane from raw swine manure
    Autor
    Calvo de Diego, Paula
    García González, María CruzAutoridad UVA
    Riaño, Berta
    Vanotti, Matias B.
    Sánchez Báscones, MercedesAutoridad UVA
    Molinuevo Salces, BeatrizAutoridad UVA Orcid
    Año del Documento
    2025
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Journal of Environmental Management, 2025, vol. 389, p. 126254
    Resumen
    The livestock industry is expanding rapidly, generating large amounts of manure rich in nutrients and energy. This study develops a novel integrated biorefinery approach that combines multiple technologies to enable the simultaneous recovery of nutrients, proteins and energy from pig manure, maximizing resource valorization and economic returns. The technologies included gas-permeable membrane (GPM) to separate the ammonia, solid- liquid separation to separate organic particles, acid-base solubilization to separate phosphorus and proteins (SPP) from the particles, anaerobic digestion (AD) to produce biogas and combinations thereof. Using the GPM method, nitrogen (N) concentrations were reduced by up to 90 %, with total ammonia nitrogen (TAN) recovery rates ranging from 25 to 27 g N m 2 d 1. Solid-liquid separation did not significantly increase pH or N recovery. The SPP method provided a phosphorus extraction efficiency of 114 % and a protein extraction efficiency of 86 % from the solid fraction of pig manure. The methane yield was 1.9 times higher when nitrogen was recovered before AD, while phosphorus and protein removal resulted in methane yields comparable to swine manure (215.5 mL CH4 g 1 VS). A techno-economical study was carried out for the AD treatments proposed in the biorefinery approach. High internal rates of return (IRR) were obtained, 21–37 %, and a return on the investment in 3–5 years was obtained for all the treatments. This integrated strategy demonstrated a comprehensive and economically viable solution for sustainable pig manure management and resource recovery.
    Materias Unesco
    3101 Agroquímica
    Palabras Clave
    Biorefinery
    Swine manure
    Anaerobic digestion
    Gas-permeable membranes
    Nutrient recovery
    Techno-economic study
    ISSN
    0301-4797
    Revisión por pares
    SI
    DOI
    10.1016/j.jenvman.2025.126254
    Patrocinador
    This work has been funded by the European Union under the Project Life GREEN AMMONIA (LIFE20-ENV/ES/000858)
    Agencia Estatal de Investigación (grant RYC-2020-029030-I/AEI/10.13039/501100011033)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S0301479725022303
    Propietario de los Derechos
    © 2025 The Author(s)
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/78264
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Aparece en las colecciones
    • DEP08 - Artículos de revista [85]
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    Attribution-NonCommercial-NoDerivatives 4.0 InternacionalLa licencia del ítem se describe como Attribution-NonCommercial-NoDerivatives 4.0 Internacional

    Universidad de Valladolid

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