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Sustainable recovery from pig slurry using ionic liquid microbial fuel cells and microalgae consortia

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dc.contributor.authorIniesta López, Eduardo
dc.contributor.authorMicol Blaya, Alfredo José
dc.contributor.authorHernández Fernández, Adrián
dc.contributor.authorSánchez Zurano, Ana
dc.contributor.authorGarrido, Yolanda
dc.contributor.authorPérez de Los Ríos, Antonia
dc.contributor.authorHernández Fernández, Francisco José
dc.contributor.departmentIngeniería Química
dc.contributor.otherFacultades de la UMU::Facultad de Química
dc.date.accessioned2026-03-10T13:03:01Z
dc.date.available2026-03-10T13:03:01Z
dc.date.copyright© The Author(s) 2026
dc.date.issued2026-01-10
dc.description.abstractPig slurry management has emerged as a pressing environmental challenge in the context of rapid population growth and intensified livestock production, highlighting the need for sustainable recovery technologies. While microalgae–bacteria (MB) systems offer promising opportunities for nutrient recycling, the high turbidity of raw pig slurry (PS) typically limits their direct application. This study proposes an innovative two-step treatment that combines microbial fuel cells (MFCs) with MB consortia to enhance both pollutant removal and resource recovery from raw PS with COD levels exceeding 18,000 mg·L⁻1. Unlike conventional designs relying on perfluorinated membranes, the MFCs employed an ionic liquid [N8-10,8–10,8–10,1+][Cl−] as a proton exchange medium, achieving 50% of COD removal and generating 57.27 ± 10.99 mW·m⁻2. The effluent was subsequently treated with MB consortia, yielding biomass productivities of 0.1 to 0.2 g·L⁻1·day⁻1, comparable to chemical fertilizer-based controls. Cell density with pre-treated and untreated pig slurry also matched control levels. In pollutant recovery, the combined microbial fuel cell and microalgae-bacteria treatment achieved up to 67% recovery of COD, over 99% of N-NH4+, and between 65 and 85% of P-PO43−. These findings highlight the potential of integrating MFCs with MB consortia as a strategy for raw pig slurry management, t-ransforming waste into renewable energy and bioresources
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dc.format.extent17
dc.identifier.citationAppl Microbiol Biotechnol 110, 9 (2026)
dc.identifier.doihttps://doi.org/10.1007/s00253-025-13686-w
dc.identifier.eissn1432-0614
dc.identifier.issn0175-7598
dc.identifier.urihttp://hdl.handle.net/10201/219581
dc.languageeng
dc.publisherSpringer
dc.relationOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The authors would like to acknowledge the financial support from the Ministry of Science, Innovation, and Universities through grants Ref. PID2021-124173OB-I00 (MCIN/AEI/https://doi.org/10.13039/501100011033 and ERDF—A way of making Europe) and Ref. TED2021-129220B-I00 (MCIN/AEI/https://doi.org/10.13039/501100011033 and Next Generation EU/PRTR), as well as the Seneca Foundation Science and Technology Agency of the Region of Murcia (grant Ref. 22017/PI/22). This study forms part of the Agroalnext programme and was supported by MCIU with funding from European Union NextGenerationEU (PRTR-C17.I1) and by Comunidad Autónoma de la Región de Murcia—Fundación Séneca. Eduardo Iniesta López is funded by grant 22345/FPI/23 from the Seneca Foundation, while Adrián Hernández Fernández receives support through grant 21817/FPI/22, also provided by the Seneca Foundation.
dc.relation.publisherversionhttps://link.springer.com/article/10.1007/s00253-025-13686-w
dc.rightsAttribution 4.0 International*
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectNutrient recovery
dc.subjectEnergy
dc.subjectBiomass
dc.subjectAlgae
dc.subjectBioelectrochemical cells
dc.subject.odsNo relacionado con ningún objetivo de desarrollo sostenible
dc.titleSustainable recovery from pig slurry using ionic liquid microbial fuel cells and microalgae consortia
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
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