dc.contributor
Universitat Politècnica de Catalunya. Doctorat en Recursos Naturals i Medi Ambient
dc.contributor
Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC
dc.contributor
Universitat Politècnica de Catalunya. RIIS - Grup de Recerca en Recursos i Indústries Intel·ligents i Sostenibles
dc.contributor.author
Castro Carrasco, Rebeca Ignacia
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Gabriel Buguña, Gemma
dc.contributor.author
Gabriel Buguña, David
dc.contributor.author
Gamisans Noguera, Javier
dc.contributor.author
Guimerà Villalba, Xavier
dc.identifier
Castro, R. [et al.]. Development of a flow-cell bioreactor for immobilized sulfidogenic sludge characterization using electrochemical H2S microsensors. "Chemosphere", Juny 2024, vol. 358, núm. article 141959.
dc.identifier
https://hdl.handle.net/2117/415557
dc.identifier
10.1016/j.chemosphere.2024.141959
dc.description.abstract
The sulfate-reduction process plays a crucial role in the biological valorization of SOx gases. However, a complete understanding of the sulfidogenic process in bioreactors is limited by the lack of technologies for characterizing the sulfate-reducing activity of immobilized biomass. In this work, we propose a flow-cell bioreactor (FCB) for characterizing sulfate-reducing biomass using H2S microsensors to monitor H2S production in real-time within a biofilm. To replace natural immobilization through extracellular polymeric substance production, sulfidogenic sludge was artificially immobilized using polymers. Physical and sulfate-reducing activity studies were performed to select a polymer-biomass matrix that maintained sulfate-reducing activity of biomass while providing strong microbial retention and mechanical strength. Several operational conditions of the sulfidogenic reactor allowed to obtain a H2S profiles under different inlet sulfate loads and, additionally, 3D mapping was assessed in order to perform a hydraulic characterization. Besides, the effects of artificial immobilization on biodiversity were investigated through the characterization of microbial communities. This study demonstrated the appropriateness of immobilized-biomass for characterization of sulfidogenic biomass in FCB using H2S electrochemical microsensors, and beneficial microbiological communities shifts as well as enrichment of sulfate-reducing bacteria have been confirmed.
dc.description.abstract
Grant PID2021-126253OB-C22 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”.
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Peer Reviewed
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Postprint (published version)
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application/pdf
dc.relation
https://www.sciencedirect.com/science/article/pii/S004565352400852X?dgcid=rss_sd_all
dc.relation
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126253OB-C22/ES/CARACTERIZACION DE BIOPELICULAS Y HERRAMIENTAS AVANZADAS DE MODELIZACION PARA EL DESARROLLO DE BIOREACTORES MEDIADOS CON HIDROGENO PARA LA VALORIZACION DE GASES RESIDUALES/
dc.rights
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights
Attribution-NonCommercial-NoDerivatives 4.0 International
dc.subject
Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient
dc.subject
Sulfate-reducing bacteria
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Biomass immobilization
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Electrochemical microsensor
dc.title
Development of a flow-cell bioreactor for immobilized sulfidogenic sludge characterization using electrochemical H2S microsensors
