Back to Search
Start Over
Advances towards the understanding of microbial communities in dark fermentation of enzymatic hydrolysates: Diversity, structure and hydrogen production performance
- Source :
- International Journal of Hydrogen Energy. 46:27459-27472
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Microbial communities involved in hydrogen (H2) production from enzymatic hydrolysates of agave bagasse were analyzed through 16S rRNA sequencing. Two types of reactor configurations and four different enzymatic hydrolysates were evaluated. Trickling bed reactors led to highly-diverse microbial communities, but low volumetric H2 production rates (VHPR, maximum: 5.8 L H2/L-d). On the contrary, well-controlled environments of continuous stirred-tank reactors favored the establishment of low diverse microbial communities composed by Clostridium-Sporolactobacillus leading to high-performance H2-production (VHPR maximum: 13 L H2/L-d). Cellulase-Viscozyme and Celluclast-Viscozyme hydrolysates led to the co-dominance of Clostridium and Sporolactobacillus, possibly due to the presence of xylose and hemicellulose-derived carbohydrates. Cellulase hydrolysates were linked to communities dominated by Clostridium, while maintaining low abundance of Sporolactobacillus. Stonezyme hydrolysates favored microbial communities co-dominated by Clostridium-Lachnoclostridium-Leuconostoc. Moreover, contrary to the prevailing theory, it was demonstrated that H2 production performance was inversely related to microbial diversity.
- Subjects :
- biology
Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
02 engineering and technology
Dark fermentation
Cellulase
Xylose
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
biology.organism_classification
Agave
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
Fuel Technology
Clostridium
chemistry
biology.protein
Food science
Sporolactobacillus
0210 nano-technology
Bagasse
Hydrogen production
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........665699f8625c9b36c2b3aaf341f23428