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Microbial community assembly and dynamics in Granular, Fixed-Biofilm and planktonic microbiomes valorizing Long-Chain fatty acids at 20 °C
- Publication Year :
- 2021
-
Abstract
- Distinct microbial assemblages evolve in anaerobic digestion (AD) reactors to drive sequential conversions of organics to methane. The spatio-temporal development of three such assemblages (granules, biofilms, planktonic) derived from the same inoculum was studied in replicated bioreactors treating long-chain fatty acids (LCFA)-rich wastewater at 20 °C at hydraulic retention times (HRTs) of 12–72 h. We found granular, biofilm and planktonic assemblages differentiated by diversity, structure, and assembly mechanisms; demonstrating a spatial compartmentalisation of the microbiomes from the initial community reservoir. Our analysis linked abundant Methanosaeta and Syntrophaceae-affiliated taxa (Syntrophus and uncultured) to their putative, active roles in syntrophic LCFA bioconversion. LCFA loading rates (stearate, palmitate), and HRT, were significant drivers shaping microbial community dynamics and assembly. This study of the archaea and syntrophic bacteria actively valorising LCFAs at short HRTs and 20 °C will help uncover the microbiology underpinning anaerobic bioconversions of fats, oil and grease. publishedVersion
- Subjects :
- Environmental Engineering
food.ingredient
Bioconversion
Methanogenesis
Bioengineering
Methanosaeta
food
Bioreactors
Syntrophus
Food science
Anaerobiosis
Waste Management and Disposal
219 Environmental biotechnology
biology
Sewage
Renewable Energy, Sustainability and the Environment
Chemistry
Microbiota
Fatty Acids
Biofilm
General Medicine
biology.organism_classification
Plankton
Anaerobic digestion
Microbial population biology
Biofilms
Methane
Archaea
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....25701d9d01377f42498ce8172f8ebdbf