Effects of shearing on biogas production and microbial community structure during anaerobic digestion with recuperative thickening

Yang, Shufan; Phan, Hop V.; Bustamante, Heriberto; Guo, Wenshan; Ngo, Huu‐Hao; Nghiem, Long D.

doi:10.1016/j.biortech.2017.03.051

Cited by 37 publications

(12 citation statements)

References 39 publications

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“…significant role in hydrolysing a broad array of polysaccharides and producing fatty acids in AD [35]. Eubacterium can degrade complex aromatic acids to produce mixed volatile fatty acids [36], while Anaerophaga is also a strictly anaerobic fermentative bacterium [37], both of which are commonly found in AD reactors [38,39]. Syntrophic bacteria had a much lower abundance in our reactors compared with the VFA-producing bacteria (Fig.…”

Section: How Can a Core Microbiota Contribute To Ad Performance?mentioning

confidence: 88%

Biogas productivity of anaerobic digestion process is governed by a core bacterial microbiota

Erşahin

Ghasimi

et al. 2020

Chemical Engineering Journal

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Section: How Can a Core Microbiota Contribute To Ad Performance?mentioning

confidence: 88%

Biogas productivity of anaerobic digestion process is governed by a core bacterial microbiota

Erşahin

Ghasimi

et al. 2020

Chemical Engineering Journal

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“…The peristaltic hose pump was continuously operated to circulate the digestate at 60 L/h for mixing. Further details of these anaerobic digesters are available elsewhere (Yang et al, 2017).…”

Section: Experimental Systemsmentioning

confidence: 99%

Anaerobic digestion of soft drink beverage waste and sewage sludge

Wickham

Xie

Galway

et al. 2018

Bioresource Technology

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Soft drink beverage waste (BW) was evaluated as a potential substrate for anaerobic co-digestion with sewage sludge to increase biogas production. Results from this study show that the increase in biogas production is proportional to the increase in organic loading rate (OLR) rate due to BW addition. The OLR increase of 86 and 171% corresponding to 10 and 20% BW by volume in the feed resulted in 89 and 191% increase in biogas production, respectively. Under a stable condition, anaerobic co-digestion with BW did not lead to any significant impact on digestate quality (in terms of COD removal and biosolids odour) and biogas composition. The results suggest that existing nutrients in sewage sludge can support an increase in OLR by about 2 kg COD/m/d from a carbon rich substrate such as soft drink BW without inhibition or excessive impact on subsequent handling of the digestate.

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“…Additional sulfate reducers belonging to the families Desulfobacteraceae (8 of 8), Desulfobulbaceae (8 of 8), and Desulfovirbrionaceae (7 of 8) were found in a majority of all lagoon samples [30]. Additionally, while primers 341F and 806R were designed as bacterial-specific, they have been known to pick up archaeal sequences [31]. This led to the identification of the Methanobacteriaceae, an archaeal family of hydrogenotrophic (H 2 /CO 2 ) methane (CH 4 ) producers, and the Methanosaetaceae, a family of archaeal acetoclastic methanogens, both of which were found in all 16 samples.…”

Section: Microbial Community Compositionmentioning

confidence: 99%

Differences in Microbial Communities and Pathogen Survival Between a Covered and Uncovered Anaerobic Lagoon

2019

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Anaerobic lagoons are a critical component of confined swine feeding operations. These structures can be modified, using a synthetic cover, to enhance their ability to capture the emission of ammonia and other malodorous compounds. Very little has been done to assess the potential of these covers to alter lagoon biological properties. Alterations in the physicochemical makeup can impact the biological properties, most notably, the pathogenic populations. To this aim, we performed a seasonal study of two commercial swine operations, one with a conventional open lagoon, the other which employed a permeable, synthetic cover. Results indicated that lagoon fecal coliforms, and Escherichia coli were significantly influenced by sampling location (lagoon vs house) and lagoon type (open vs. covered), while Enterococcus sp. were influenced by sampling location only. Comparisons against environmental variables revealed that fecal coliforms (r2 = 0.40), E. coli (r2 = 0.58), and Enterococcus sp. (r2 = 0.25) significantly responded to changes in pH. Deep 16S sequencing of lagoon and house bacterial and archaeal communities demonstrated grouping by both sampling location and lagoon type, with several environmental variables correlating to microbial community differences. Overall, these results demonstrate that permeable synthetic covers play a role in changing the lagoon microclimate, impacting lagoon physicochemical and biological properties.

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Effects of shearing on biogas production and microbial community structure during anaerobic digestion with recuperative thickening

Cited by 37 publications

References 39 publications

Biogas productivity of anaerobic digestion process is governed by a core bacterial microbiota

Biogas productivity of anaerobic digestion process is governed by a core bacterial microbiota

Anaerobic digestion of soft drink beverage waste and sewage sludge

Differences in Microbial Communities and Pathogen Survival Between a Covered and Uncovered Anaerobic Lagoon

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