Anaerobic co-digestion of Chinese cabbage waste and cow manure at mesophilic and thermophilic temperatures: Digestion performance, microbial community, and biogas slurry fertility

Liu, Yi; Wang, Tianfeng; Xing, Zhijie; Ma, Yaopeng; Nan, Fuxiong; Pan, Lei; Chen, Jixiang

doi:10.1016/j.biortech.2022.127976

Cited by 36 publications

(17 citation statements)

References 35 publications

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“…Figure 4A-C). This is in line with several other studies, where thermophilic communities wer ways less diverse compared with mesophilic ones [52,53]. The range between mesop and thermophilic temperatures represents a transition phase and is characterized thermo-flexible mesophilic and thermophilic organisms, and by taxa specifically thri at this temperature [20].…”

Section: Microbial Community Analysis 321 Microbial Diversitysupporting

confidence: 91%

“…Even though Pielou's evenness steadily decreased with t perature, the drop from 47 °C (J' = 0.54) to 53 °C (J' = 0.39) was remarkable and indic that only a small number of highly abundant taxa dominated at thermophilic conditi while the abundance of minor taxa decreased significantly. This is particularly interes since microbial diversity and evenness can be seen as an indicator for process stabi although specific methane yield, methane content, VFA and FOS/TAC analysis show This is in line with several other studies, where thermophilic communities were always less diverse compared with mesophilic ones [52,53]. The range between mesophilic and thermophilic temperatures represents a transition phase and is characterized by thermoflexible mesophilic and thermophilic organisms, and by taxa specifically thriving at this temperature [20].…”

Section: Microbial Community Analysis 321 Microbial Diversitysupporting

confidence: 88%

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Exploring Anaerobic Digestion from Mesophilic to Thermophilic Temperatures—Operational and Microbial Aspects

Steiniger,

Hupfauf,

Insam

et al. 2023

Fermentation

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Digesters at water resource recovery facilities (WRRFs) operating at different temperatures within the mesophilic and thermophilic temperature range is a flexibilization concept to contribute to heat management. Four 25 L digesters were fed with sewage sludge from a municipal WRRF and were operated at 37, 43, 47 and 53 °C, respectively, to describe changes in the overall process performance and the microbiota. Specific methane yield and COD degradation rates were the highest at 47 °C, only being up to 7% higher compared with at 37 °C. The increase in pH and concentrations of NH4-N and PO4-P above 43 °C were statistically significant. The effect on the microbial community was strong, indicating both a constant specialization towards thermophilic organisms as well as a change from acetoclastic to hydrogenotrophic/methylotrophic methanogenesis. The influence of temperature on process-engineering and physicochemical aspects was rather small compared with the changes in the microbiota.

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Section: Microbial Community Analysis 321 Microbial Diversitysupporting

confidence: 91%

Section: Microbial Community Analysis 321 Microbial Diversitysupporting

confidence: 88%

Exploring Anaerobic Digestion from Mesophilic to Thermophilic Temperatures—Operational and Microbial Aspects

Steiniger,

Hupfauf,

Insam

et al. 2023

Fermentation

View full text Add to dashboard Cite

show abstract

“…Additionally, some of the most significant constraints in the pretreatment of any lignocellulosic material are its energy requirements and the inhibitors produced during pretreatment. Thermophilic conditions require a high energy intake and a longer start‐up time, creating an imbalance in microbial consortia 107,108 . Inhibitory compounds produced during pretreatment may include furans, organic acids, and phenolic and aliphatic compounds.…”

Section: Considerations For Implementing Pretreatment Of Dcmmentioning

confidence: 99%

“…Thermophilic conditions require a high energy intake and a longer start-up time, creating an imbalance in microbial consortia. 107,108 Inhibitory compounds produced during pretreatment may include furans, organic acids, and phenolic and aliphatic compounds. The generation depends on the material type, pretreatment technique, and operating parameters; this becomes a hurdle for the downstream hydrolysis process.…”

Section: Technical Challengesmentioning

confidence: 99%

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Nadan

Baroutian

2023

J of Chemical Tech & Biotech

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The continuing increase in dairy cattle farming poses a significant threat to the environment due to the release of greenhouse gases (GHG) from uncontrolled manure generation. Waste valorisation of dairy cow manure (DCM) through anaerobic digestion (AD) provides an avenue for simultaneously managing DCM and mitigating climate change through renewable energy. This review provides an overview of DCM production and the potential use of the AD processes for waste management and renewable energy generation in Fiji. Fiji dairy farms are geographically unevenly distributed and have considerably small herd sizes. With pretreatment techniques, biogas production from DCM at these farms has the potential to be optimised, economically feasible, and viable. Biogas production from DCM can be enhanced by approximately 125% with pretreatment techniques. Hence, this study reviews various pretreatment methods, their economic and environmental benefits, and AD's general challenges and limitations. This research reveals a need for further investigation into the optimisation of biogas and bio-methane potential of DCM, specifically with the economic viability and the environmental considerations of implementing these techniques at Fijian dairy farms.

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“…In contrast, operation at thermophilic conditions (50-55 • C) is less common (13%) [70]. The reason is that a lower cost is needed for heating, the microbial community structure is more abundant, and the fermentation performance is more stable in the mesophilic digester [35,71]. Another reason is that high temperature increases the free ammonia nitrogen (FAN, NH 3 ) ratio, resulting in FAN levels above the tolerance threshold of microorganisms, especially for high ammonia level digesters.…”

Section: Common Anaerobic Bioreactors and Operating Parameters For An...mentioning

confidence: 99%

Microbiological and Technological Insights on Anaerobic Digestion of Animal Manure: A Review

et al. 2023

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Anaerobic digestion of animal manure results in the production of renewable energy (biogas) and nutrient-rich biofertilizer. A further benefit of the technology is decreased greenhouse gas emissions that otherwise occur during manure storage. Since animal manure makes anaerobic digestion cost-efficient and further advance the technology for higher methane yields, it is of utmost importance to find strategies to improve bottlenecks such as the degradation of lignocellulose, e.g., in cattle manure, or to circumvent microbial inhibition by ammonia caused by the degradation of nitrogen compounds in, e.g., chicken, duck, or swine manure. This review summarizes the characteristics of different animal manures and provides insight into the underlying microbial mechanisms causing challenging problems with the anaerobic digestion process. A particular focus is put upon the retention time and organic loading rate in high-ammonia processes, which should be designed and optimized to support the microorganisms that tolerate high ammonia conditions, such as the syntrophic acetate oxidizing bacteria and the hydrogenotrophic methanogens. Furthermore, operating managements used to stabilize and increase the methane yield of animal manure, including supporting materials, the addition of trace elements, or the incorporation of ammonia removal technologies, are summarized. The review is finalized with a discussion of the research needed to outline conceivable operational methods for the anaerobic digestion process of animal manure to circumvent process instability and improve the process performance.

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Anaerobic co-digestion of Chinese cabbage waste and cow manure at mesophilic and thermophilic temperatures: Digestion performance, microbial community, and biogas slurry fertility

Cited by 36 publications

References 35 publications

Exploring Anaerobic Digestion from Mesophilic to Thermophilic Temperatures—Operational and Microbial Aspects

Exploring Anaerobic Digestion from Mesophilic to Thermophilic Temperatures—Operational and Microbial Aspects

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Microbiological and Technological Insights on Anaerobic Digestion of Animal Manure: A Review

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