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

Water Research, Journal Year: 2023, Volume and Issue: 241, P. 120167 - 120167

Published: June 2, 2023

Language: Английский

---

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, Journal Year: 2025, Volume and Issue: 70, P. 106948 - 106948

Published: Jan. 9, 2025

Language: Английский

---

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, Journal Year: 2024, Volume and Issue: 18(4)

Published: Jan. 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.

Language: Английский

---

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

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145760 - 145760

Published: Aug. 30, 2023

Language: Английский

---

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

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 58, P. 104814 - 104814

Published: Jan. 21, 2024

Language: Английский

---

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

---

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

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 468, P. 143565 - 143565

Published: May 18, 2023

Language: Английский

---

Microaerobic condition as pretreatment for improving anaerobic digestion: A review

Bioresource Technology, Journal Year: 2023, Volume and Issue: 384, P. 129249 - 129249

Published: June 1, 2023

Language: Английский

---

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

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 113162 - 113162

Published: May 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.

Language: Английский

---

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

Bioresource Technology, Journal Year: 2023, Volume and Issue: 387, P. 129615 - 129615

Published: Aug. 6, 2023

Language: Английский

---