Elucidating Key Microbial Drivers for Methane Production during Cold Adaptation and Psychrophilic Anaerobic Digestion of Cattle Manure and Food Waste Article Swipe
Haripriya Rama
,
Busiswa Ndaba
,
M.S. Dhlamini
,
Nicolene Cochrane
,
M. Mâaza
,
Ashira Roopnarain
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3390/fermentation10070370
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3390/fermentation10070370
At psychrophilic temperatures (<20 °C), anaerobic digestion produces less methane (CH4). For psychrophilic anaerobic digestion (PAD) to be successful, investigation of cold-adapted microbial consortia involved in methane production is critical. This study aimed to investigate the microbial community driving enhanced methane production from the cold-adaptation process and bioaugmentation of PAD with cold-adapted inoculum (BI). Microbial consortia in cattle manure (CM) and food waste (FW) were adapted and applied during batch PAD of CM and FW to bioaugment methane production at 15 °C. Cold adaptation and PAD with BI resulted in cumulative specific methane yields of 0.874 ± 0.231 and 0.552 ± 0.089 L CH4 g−1 volatile solids, respectively, after 14 weeks, while the absence of BI (control) led to acidification and no methane production during PAD. Following 16S rRNA V4–V5 amplicon sequencing and metagenomic analyses, Methanosarcina was revealed as a key driver of methanogenesis during cold adaptation and PAD bioaugmentation. Furthermore, based on the predictive functional and metabolic analysis of the communities, possible synergies were proposed in terms of substrate production and utilization by the dominant microbial groups. For instance, during methane production, Bacteroides and Methanobrevibacter were possibly involved in a syntrophic relationship, which promoted methanogenesis by Methanosarcina. These findings provide insight into the prospective microbial synergies that can be harnessed and/or regulated in cold-adapted inoculum for the improvement of methane production during PAD.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/fermentation10070370
- OA Status
- gold
- Cited By
- 7
- References
- 77
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4400806549
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4400806549Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/fermentation10070370Digital Object Identifier
- Title
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Elucidating Key Microbial Drivers for Methane Production during Cold Adaptation and Psychrophilic Anaerobic Digestion of Cattle Manure and Food WasteWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-07-19Full publication date if available
- Authors
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Haripriya Rama, Busiswa Ndaba, M.S. Dhlamini, Nicolene Cochrane, M. Mâaza, Ashira RoopnarainList of authors in order
- Landing page
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https://doi.org/10.3390/fermentation10070370Publisher landing page
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
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https://doi.org/10.3390/fermentation10070370Direct OA link when available
- Concepts
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Psychrophile, Anaerobic digestion, Manure, Food waste, Biogas, Methane, Production (economics), Chicken manure, Environmental science, Anaerobic exercise, Extremophile, Waste management, Agronomy, Biotechnology, Biology, Ecology, Microorganism, Bacteria, Engineering, Physiology, Macroeconomics, Genetics, EconomicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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7Total citation count in OpenAlex
- Citations by year (recent)
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2025: 6, 2024: 1Per-year citation counts (last 5 years)
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77Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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