2026-05-05T21:52:16Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/729432025-01-12T18:15:24Zcom_10324_1173com_10324_931com_10324_894col_10324_1371

Microbial analysis of anaerobic digester reveals prevalence of manure microbiota García Álvaro, Alfonso Ruiz Palomar, César Valenzuela, Edgardo I. Hermosilla Redondo, María Daphne Muñoz Torre, Raúl Godos Crespo, Ignacio de Anaerobic digestion of swine manure reduces farm greenhouse gases emissions and provides a renewable gas in the agricultural sector. The particular composition of manure, with high concentrations of ammoniacal nitrogen and volatile fatty acids, often threatens the stability of the process through inhibition of methanogens. In this work, continuous production of biogas was tested under relative short hydraulic retention time (15 days). Although a strong inhibition period was detected, adaptation of the microbiota and displacement of bacteria and archaea present in the inoculum by microorganisms present in the animal manure resulted in biogas production close to the values found in standardized batch tests in absence of inhibitions. These findings suggest that in anaerobic digestion of manure, it is not necessary to inoculate, as manure itself contains a large number of active fermentative microorganisms that can even resist long-term digestion inhibition. 2024-12-20T10:08:23Z 2024-12-20T10:08:23Z 2024-12-20T10:08:23Z 2024 info:eu-repo/semantics/article Journal of Water Process Engineering, abril 2024, vol. 60, 105162 2214-7144 https://uvadoc.uva.es/handle/10324/72943 10.1016/j.jwpe.2024.105162 105162 Journal of Water Process Engineering 60 eng https://www.sciencedirect.com/science/article/pii/S2214714424003945 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ © 2024 The Authors Atribución-NoComercial 4.0 Internacional Elsevier