Microaeration promotes volatile siloxanes conversion to methane and simpler monomeric products

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dc.contributor.authorOrtiz-Ardila, A. E.
dc.contributor.authorCelis, C.
dc.contributor.authorUsack, J. G.
dc.contributor.authorAngenent, L. T.
dc.contributor.authorLabatut, R. A.
dc.date.accessioned2025-01-20T16:18:09Z
dc.date.available2025-01-20T16:18:09Z
dc.date.issued2024
dc.description.abstractThe ubiquitous use of volatile siloxanes in a myriad of product formulations has led to a widespread distribution of these persistent contaminants in both natural ecosystems and wastewater treatment plants. Microbial degradation under microaerobic conditions is a promising approach to mitigate D4 and D5 siloxanes while recovering energy in wastewater treatment plants. This study examined D4/D5 siloxanes biodegradation under both anaerobic and microaerobic conditions ( P O 2 = 0, 1, 3 %) using wastewater sludge. Results show that the use of microaeration in an otherwise strictly anaerobic environment significantly enhances siloxane conversion to methane. 16S rRNA gene sequencing identified potential degraders, including Clostridium lituseburense , Clostridium bifermentans and Synergistales species. Furthermore, chemical analysis suggested a stepwise siloxane conversion preceding methanogenesis under microaerobic conditions. This study demonstrates the feasibility of microaerobic siloxane biodegradation, laying groundwork for scalable removal technologies in wastewater treatment plants, ultimately highlighting the importance of using bio-based approaches in tackling persistent pollutants.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.biortech.2024.130673
dc.identifier.eissn1873-2976
dc.identifier.issn0960-8524
dc.identifier.urihttps://doi.org/10.1016/j.biortech.2024.130673
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90633
dc.identifier.wosidWOS:001226704900001
dc.language.isoen
dc.revistaBioresource technology
dc.rightsacceso restringido
dc.subjectAnaerobic digestion
dc.subjectBiogas
dc.subjectSiloxane biodegradation
dc.subjectMicrobiome adaptation
dc.subjectEmergent contaminants
dc.titleMicroaeration promotes volatile siloxanes conversion to methane and simpler monomeric products
dc.typeartículo
dc.volumen400
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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