Effects of Carbon–to–Nitrogen Ratio and Temperature on the Survival of Antibiotic-Resistant and Non-Resistant Escherichia coli During Chicken Manure Anaerobic Digestion

Poultry, Journal Year: 2025, Volume and Issue: 4(1), P. 9 - 9

Published: Feb. 11, 2025

Anaerobic digestion (AD) is a suitable process to use manure for biogas production. During this process, antimicrobial resistant (AMR) bacteria are reduced. In study, we investigated the reduction of extended-spectrum beta-lactamase (ESBL)-producing, fluoroquinolone-resistant, and total Escherichia (E.) coli concentrations in chicken during AD. AD was performed at 30 °C 37 (mesophilic temperature range), with without sawdust addition as lignocellulosic biomass. The initial E. were 6.43 log10CFU/g 7.84 log10CFU/g. concentration Fluoroquinolone-resistant approx. 6.05 (6.70%), ESBL-producing 5.48 (0.99%). AD, observed that had main influence on bacterial reduction, abundance below detection limit after day 7 14 °C. At higher amounts free ammonia, which an inhibitor process. carbon-to-nitrogen (C/N) ratio has important impact because C/N decreases amount generated ammonia nitrogen. However, did not observe significant difference AMR between natural (10:1) increased (25:1).

Language: Английский

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A Review of Operational Conditions of the Agroforestry Residues Biomethanization for Bioenergy Production Through Solid-State Anaerobic Digestion (SS-AD)

Energies, Journal Year: 2025, Volume and Issue: 18(6), P. 1397 - 1397

Published: March 12, 2025

Agroforestry residues are a promising source of organic matter and energy. These wastes often poorly managed by incineration or open-air composting, resulting in the emission greenhouse gases. Solid-state anaerobic digestion has recently attracted considerable attention to converting waste with high total solids content, such as agroforestry residues, into renewable However, complex structure these is still defiance this technology. Their degradation requires long period, low heat mass transfer. In addition, process inhibited accumulation toxic compounds. An efficient management remained under development. Comprehending challenges faced when treating necessary create practical applications. This review provides essential information for more effective agricultural forestry using SS-AD process. It covers different parameters experiments that have successfully energy production. Various solutions been identified overcome drawbacks encountered. include co-digestion, which brings together better sustainability, strategies used improve production from at levels, involving pretreatments appropriate operational reactor designs.

Language: Английский

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Assessment of biomass resources for a clean and sustainable energy generation in Iran

Biomass and Bioenergy, Journal Year: 2025, Volume and Issue: 199, P. 107908 - 107908

Published: April 24, 2025

Language: Английский

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Lignocellulosic wastes-based biofilter for the deodorization of nanofertilizer from biogas digestate

Bioresource Technology Reports, Journal Year: 2025, Volume and Issue: unknown, P. 102068 - 102068

Published: Feb. 1, 2025

Language: Английский

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Performance and Kinetics of Anaerobic Digestion of Sewage Sludge Amended with Zero-Valent Iron Nanoparticles, Analyzed Using Sigmoidal Models

Energies, Journal Year: 2025, Volume and Issue: 18(6), P. 1425 - 1425

Published: March 13, 2025

Sewage sludge was treated with nanoscale zero-valent iron (nZVI) to enhance biogas and methane (CH4) production, the influence of key parameters on material’s anaerobic digestion (AD) efficiency analyzed using sigmoidal mathematical models. In this study, three dosages nZVI (0.5%, 1.5% 3%) were added system accelerate decomposition process. The results showed that cumulative yield after 41 days increased by 23.9% in reactor a dosage 1.5%. Correspondingly, highest CH4 production enhancement 21.5% achieved compared control. indicated optimal for AD system, as it governed yields maximum removal total volatile solids. Additionally, predict evaluate kinetic parameters, eight models applied. According modified Gompertz, Richards logistic models, shortened lag phase from 11 5 Schnute model provided best fit experimental data due coefficients determination (R2: 0.9997–0.9999 at 3% dosages), well lowest Akaike’s Information Criterion values errors. This demonstrated its superior performance other

Language: Английский

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Evaluating the Efficacy of Using Cow Manure as an Inoculant on Biogas Production from Vegetable and Fruit Market Waste

Published: April 3, 2025

Greenhouse gas emissions is a progressive issue in today’s world, with factors such as scattered wastes that emits methane one of the leading causes. Cow manure and market fruits vegetables were used substrates inoculum this study to mitigate impact secretion environment. has shown exquisite signs bacterial growth which aids microbial activity, aims on evaluating its effects adding it anaerobic process mixed vegetables. A method applied using (MFV) cow inoculum. Four ratios created varying proportions water test efficacy biogas production The MFV were; 0:2:2, 1:2:1, 2:2:2, 4:2:4. ratio yielded highest content was 2:2:2 ratio, 100% LEL (Lower explosive limit) 2.5% methane, lowest yield came from 0:2:2 0% showing process.

Language: Английский

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Deciphering metabolic regulatory mechanisms in vital anaerobes for enhanced biogas production from protein-rich waste

Systems Microbiology and Biomanufacturing, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Language: Английский

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