6533b832fe1ef96bd129aeca

RESEARCH PRODUCT

Acclimatised rumen culture for raw microalgae conversion into biogas: Linking microbial community structure and operational parameters in anaerobic membrane bioreactors (AnMBR)

N. Zamorano-lópezD. AguadoL. BorrásJuan Bautista GiménezAurora Seco

subject

0106 biological sciencesRumenEnvironmental EngineeringMicroorganismBioengineering010501 environmental sciencesWaste Disposal Fluid01 natural sciencesMethanosaetaBioreactorsBiogasMicrobial ecologyBioenergyRNA Ribosomal 16S010608 biotechnologyMicroalgaeBioreactorAnimalsAnaerobiosisWaste Management and DisposalTECNOLOGIA DEL MEDIO AMBIENTE0105 earth and related environmental sciencesbiologyAnaerobic membrane bioreactor (AnMBR)Renewable Energy Sustainability and the EnvironmentChemistryMicrobiotaGeneral MedicineBiogasMicroalgaeBiodegradationbiology.organism_classificationPulp and paper industryMicrobial population biologyBiofuels16S rRNA geneMethane

description

[EN] Ruminal fluid was inoculated in an Anaerobic Membrane Reactor (AnMBR) to produce biogas from raw Scenedesmus. This work explores the microbial ecology of the system during stable operation at different solids retention times (SRT). The 16S rRNA amplicon analysis revealed that the acclimatised community was mainly composed of Anaerolineaceae, Spirochaetaceae, Lentimicrobiaceae and Cloacimonetes fermentative and hydrolytic members. During the highest biodegradability achieved in the AnMBR (62%) the dominant microorganisms were Fervidobacterium and Methanosaeta. Different microbial community clusters were observed at different SRT conditions. Interestingly, syntrophic bacteria Gelria and Smithella were enhanced after increasing 2-fold the organic loading rate, suggesting their importance in continuous systems producing biogas from raw microalgae.

yearjournalcountryeditionlanguage
2019-10-01Bioresource Technology
https://doi.org/10.1016/j.biortech.2019.121787