Journal
BIORESOURCE TECHNOLOGY
Volume 335, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125296
Keywords
Organic loading rate; Acidogenic fermentation; Fungal community; Immersed membrane bioreactor; Volatile fatty acids
Funding
- Shaanxi introduced talent research funding [A279021901]
- China and The Introduction of Talent Research Start-up fund [00700-Z101022001]
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, China
- European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant [754412]
- Mobility for Regional Excellence-2020 [RUN 2017-00771]
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The study found that different OLRs and HRT significantly influenced the fungal community diversity.
In this study, the influence of distinct hydraulic retention times (HRT) and organic loading rates (OLRs) on fungal dynamics during food waste anaerobic digestion in immersed membrane-based bio-reactors (iMBR) were investigated. The organic loading rate 4-8 g VS/L/d (R1) and 6-10 g VS/L/d (R2) were set in two iMBR. T1 (1d), T2 (15d) and T3 (34d) samples collected from each bioreactor were analyzed fungal community by using 18s rDNA. In R2, T2 had the most abundant Ascomycota, Basidiomycota, Chytridiomycota and Mucoromycota. As for R1, T3 also had the richest Cryptomycota except above four kinds of fungi. Subsequently, the Principal Component Analysis (PCA) and Non-Metric Multi-Dimensional Scaling (NMDS) indicated that fungal diversity was varied among the all three phases (T1, T2, and T3) and each treatment (R1 and R2). Finally, the results showed that different OLRs and HRT have significantly influenced the fungal community.
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