Microbiome-functionality in anaerobic digesters: A critical review

Water Research, Journal Year: 2023, Volume and Issue: 249, P. 120891 - 120891

Published: Nov. 18, 2023

Language: Английский

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Biogas production of food waste with in-situ sulfide control under high organic loading in two-stage anaerobic digestion process: Strategy and response of microbial community

Bioresource Technology, Journal Year: 2023, Volume and Issue: 373, P. 128712 - 128712

Published: Feb. 8, 2023

Language: Английский

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Optimizing anaerobic digestion: Benefits of mild temperature transition from thermophilic to mesophilic conditions

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 21, P. 100440 - 100440

Published: June 13, 2024

Anaerobic digestion (AD) plays a significant role in renewable energy recovery. Upgrading AD from thermophilic (50–57 °C) to mesophilic (30–38 conditions enhance process stability and reduce input remains challenging due the high sensitivity of microbiomes temperature fluctuations. Here we compare effects two decreasing-temperature modes 55 35 °C on cell viability, microbial dynamics, interspecies interactions. A sharp transition (ST) is one-step by 20 d−1, while mild (MT) stepwise 1 d−1. We find greater decrease methane production with ST (88.8%) compared MT (38.9%) during period. mode overproduced reactive oxygen species 1.6-fold, increased membrane permeability 2.2-fold, downregulated metabolism 25.1%, leading apoptosis anaerobes 1.9-fold release intracellular substances 2.9-fold, further constraining methanogenesis. The higher (1.6 vs. 1.1 copies per gyrA) metabolic activity acetate-dependent methanogenesis implied more efficient steady mesophilic, MT-mediated system. Metagenomic binning network analyses indicated that induced dysbiosis keystone greatly enhanced functional redundancy, causing loss syntrophic interactions redundant pathways. In contrast, interconnections (average degrees 44.9 22.1) at state suggested could better maintain necessary system functionality through syntrophy or specialized Adopting transform digesters into feasible potentially optimization broader application practical anaerobic engineering.

Language: Английский

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Thermophilic-mesophilic temperature phase anaerobic co-digestion of sewage sludge, wine vinasse and poultry manure: Effect of hydraulic retention time on mesophilic-methanogenic stage

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138478 - 138478

Published: Aug. 4, 2022

The present study investigated the influence of hydraulic retention time (HRT) in temperature-phase anaerobic co-digestion (TPAcD) for methane production. reactors were started-up with a mixing ratio 49.5:49.5:1 sewage sludge, wine vinasse and poultry manure. TPAcD was operated at thermophilic temperatures first stage mesophilic second stage. constant HRT 5 days, while methanogenic optimized under 15, 12, 10, 8, 5, 4, 3 days. best results obtained an 12 days stage, 56.35 % volatile solids (VS) biodegradation achieved, yield 391 mL CH4/gVSadded. Regarding whole process (acidogenic following by methanogenic), vS total fatty acids reached, respectively, 93.13 97.43 removal efficiency. microbial population revealed that Eubacteria higher than Archaea highest yield, activity increased proportionally to organic loading rate, which turn related Due strong pathogen reduction TPAcD, digestate can be classified as class A biosolids all evaluated, being promising alternative its application agricultural fertilizer. Finally, presented environmeltally friendly management vinasse, manure integrated biorefinery recovery bioenergy fertilizer, advocating sustainable approach circular economy transition.

Language: Английский

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Hydrochar prepared from digestate improves anaerobic co-digestion of food waste and sewage sludge: Performance, mechanisms, and implication

Bioresource Technology, Journal Year: 2022, Volume and Issue: 362, P. 127765 - 127765

Published: Aug. 17, 2022

Language: Английский

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Strategies for enhancing the efficacy of anaerobic digestion of food industry wastewater: An insight into bioreactor types, challenges, and future scope

Chemosphere, Journal Year: 2022, Volume and Issue: 310, P. 136856 - 136856

Published: Oct. 12, 2022

Language: Английский

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A large cathode surface area promotes electromethanogenesis at a proper external voltage in a single coaxial microbial electrolysis cell

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 868, P. 161721 - 161721

Published: Jan. 20, 2023

Language: Английский

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Stoichiometry and energy assessment comparison between thermophilic and mesophilic high-solid anaerobic co-digestion of lipids and food waste

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 459, P. 141551 - 141551

Published: Jan. 25, 2023

Language: Английский

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Biogas slurry reflux enhances the organic loading rate of high-solid anaerobic digestion of kitchen waste by alleviating fatty acids accumulation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 149072 - 149072

Published: Jan. 26, 2024

Language: Английский

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Biogas production performance and system stability monitoring in thermophilic anaerobic co-digestion of lipids and food waste

Bioresource Technology, Journal Year: 2022, Volume and Issue: 358, P. 127432 - 127432

Published: June 4, 2022

Language: Английский

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