Improving mesophilic anaerobic digestion of food waste by side-stream thermophilic reactor: Activation of methanogenic, key enzymes and metabolism

Water Research, Год журнала: 2023, Номер 241, С. 120167 - 120167

Опубликована: Июнь 2, 2023

Язык: Английский

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Volatile fatty acids production and sulfur metabolism pathways altered in a two-phase anaerobic sulfate-reducing system due to high organic and sulfate loading rates

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106948 - 106948

Опубликована: Янв. 9, 2025

Язык: Английский

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Electronic regulation to achieve efficient anaerobic digestion of organic fraction of municipal solid waste (OFMSW): strategies, challenges and potential solutions

Frontiers of Environmental Science & Engineering, Год журнала: 2024, Номер 18(4)

Опубликована: Янв. 1, 2024

Abstract Anaerobic digestion (AD) of organic fraction municipal solid waste (OFMSW) is prone to system breakdown under high loading rates (OLRs) condition, which subsequently reduces the efficiency process and results in substantial economic losses. In this perspective paper, substances metabolisms, electrons flow, as well microbial interaction mechanisms within AD are comprehensively discussed, underlying bottleneck that causes inefficient methane production identified, “electrons surplus”. Systems encountering severe electron surplus at risk failure, making it crucial proactively prevent phenomenon through appropriate approaches. On basis, present proposes three potential electronic regulation strategies surplus, namely, shunt, accelerating transfer regulating methanogenic metabolism pathway, presents specific methodologies for each strategy. Furthermore, solutions challenges may occur during also presented paper. This aims provide innovative approaches achieve efficient stable operation OFMSW anaerobic digestion, especially OLRs condition.

Язык: Английский

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Micro-aeration based anaerobic digestion for food waste treatment: A review

Journal of Water Process Engineering, Год журнала: 2024, Номер 58, С. 104814 - 104814

Опубликована: Янв. 21, 2024

Язык: Английский

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

Environmental Science and Ecotechnology, Год журнала: 2024, Номер 21, С. 100440 - 100440

Опубликована: Июнь 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.

Язык: Английский

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Insights into the mitigative effects of microbial electrolysis cell on anaerobic digestion under high ammonia condition

Chemical Engineering Journal, Год журнала: 2023, Номер 474, С. 145760 - 145760

Опубликована: Авг. 30, 2023

Язык: Английский

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Microaerobic condition as pretreatment for improving anaerobic digestion: A review

Bioresource Technology, Год журнала: 2023, Номер 384, С. 129249 - 129249

Опубликована: Июнь 1, 2023

Язык: Английский

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Preparation and mechanism of carbon felt supported iron trioxide and zero-valent iron for enhancing anaerobic digestion performance

Chemical Engineering Journal, Год журнала: 2023, Номер 468, С. 143565 - 143565

Опубликована: Май 18, 2023

Язык: Английский

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Micro-aeration and leachate recirculation for the acceleration of landfill stabilization: Enhanced hydrolytic acidification by facultative bacteria

Bioresource Technology, Год журнала: 2023, Номер 387, С. 129615 - 129615

Опубликована: Авг. 6, 2023

Язык: Английский

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Synergistic approach for enhanced wastewater treatment: Harnessing the potential of bioelectrochemical systems in integration with anaerobic membrane bioreactors

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(4), С. 113162 - 113162

Опубликована: Май 28, 2024

Anaerobic membrane bioreactor (AnMBR) technology emerges as a groundbreaking solution for domestic wastewater treatment, offering high effluent quality and substantial potential neutral or positive energy balances. This is achieved through the production of renewable methane biogas, concurrently reducing aeration sludge handling costs. Despite these strides, fouling mitigation persists pivotal challenge, constituting significant portion membrane-based bioreactors requirements. In response, AnMBR has evolved seamless integration with bioelectrochemical systems (BES), specifically microbial fuel electrolysis cells. aims to address challenges while enhancing resource recovery from wastewater. this context, paper centers on key performance parameters, including removal efficiency, strategies, biogas generation, shedding light latest advancements in integrated technologies. By scrutinizing recent progress, it identifies research gaps needs, emphasizing optimizations such integrating granular catalytic electrodes micropollutant degradation. Overall, review contributes deeper understanding advocates broader application AnMBR-BES approach, playing role advancing sustainable treatment.

Язык: Английский

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