RT info:eu-repo/semantics/article
T1 A biorefinery approach to recover nutrients, proteins, and methane from raw swine manure
A1 Calvo de Diego, Paula
A1 García González, María Cruz
A1 Riaño, Berta
A1 Vanotti, Matias B.
A1 Sánchez Báscones, Mercedes
A1 Molinuevo Salces, Beatriz
K1 Biorefinery
K1 Swine manure
K1 Anaerobic digestion
K1 Gas-permeable membranes
K1 Nutrient recovery
K1 Techno-economic study
K1 3101 Agroquímica
AB 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 thesimultaneous recovery of nutrients, proteins and energy from pig manure, maximizing resource valorization andeconomic 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 GPMmethod, nitrogen (N) concentrations were reduced by up to 90 %, with total ammonia nitrogen (TAN) recoveryrates 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 recoveredbefore 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 thebiorefinery approach. High internal rates of return (IRR) were obtained, 21–37 %, and a return on the investmentin 3–5 years was obtained for all the treatments. This integrated strategy demonstrated a comprehensive andeconomically viable solution for sustainable pig manure management and resource recovery.
PB Elsevier
SN 0301-4797
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/78264
UL https://uvadoc.uva.es/handle/10324/78264
LA eng
NO Journal of Environmental Management, 2025, vol. 389, p. 126254
NO Producción Científica
DS UVaDOC
RD 26-oct-2025