Assessing microbial stability and predicting biogas production in full-scale thermophilic dry methane fermentation of municipal solid waste.
Bioresour Technol
; 402: 130766, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38692378
ABSTRACT
Compared to typical anaerobic digestion processes, little is known about both sludge microbial compositions and biogas production models for full-scale dry methane fermentation treating municipal solid waste (MSW). The anaerobic sludge composed of one major hydrogenotrophic methanogen (Methanoculleus) and syntrophic acetate oxidizing bacteria (e.g., Caldicoprobacter), besides enrichment of MSW degraders such as Clostridia. The core population remained phylogenetically unchanged during the fermentation process, regardless of amounts of MSW supplied (â¼35 ton/d) or biogas produced (â¼12000 Nm3/d). Based on the correlations observed between feed amounts of MSW from 6 days in advance to the current day and biogas output (the strongest correlation r = 0.77), the best multiple linear regression (MLR) model incorporating the temperature factor was developed with a good prediction for validation data (R2 = 0.975). The proposed simple MLR method with only data on the feedstock amounts will help decision-making processes to prevent low-efficient biogas production.
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Base de dados:
MEDLINE
Assunto principal:
Esgotos
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Resíduos Sólidos
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Biocombustíveis
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Fermentação
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Metano
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article