Effects of Different Microplastics on Methane Production and Microbial Community Structure in Anaerobic Digestion of Cattle Manure

Agronomy, Journal Year: 2025, Volume and Issue: 15(1), P. 107 - 107

Published: Jan. 3, 2025

Microplastics (MPs) are widely distributed in the environment, and they inevitably enter animal bodies during livestock poultry farming, leading to their presence manure. However, there is limited research on effects of different types MPs anaerobic digestion (AD) performance Herein, we investigated impact four (polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), polyhydroxyalkanoate (PHA)) AD using cattle manure as a substrate. Results demonstrated that cumulative methane production PE group reached 5568.05 mL, exhibiting an 11.97% increase compared control group. Conversely, was decreased by 5.52%, 9.69%, 14.48% PP, PVC, PHA groups, respectively. Physicochemical analyses showed promoted organic matter hydrolysis day 4 AD, accumulation volatile fatty acids (VFAs) initial stage. Specifically, acetic acid content 44.48–92.07 mL/L higher than first 8 days. also enriched microorganisms associated with production. The abundance Firmicutes enhanced 2.89–17.57%, Methanosaeta 8.42–12.48%, Methanospirillum 10.91–16.89% comparison control; whereas 8.14–31.40%. Moreover, inhibited suppressing acetate kinase activity while promoting lactate dehydrogenase release from involved process. Based changes observed key enzyme functional gene abundances, reduced acetyl-CoA carboxylase abundance, negatively affecting acetone cleavage methanogenesis pathway. Meanwhile, significantly increased acetate-CoA ligase thereby results provide novel insights into influence exerted when applied

Language: Английский

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Investigation of Interactions Among Major Biomass Components During Anaerobic Digestion Under pH-Adjustment Conditions

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115667 - 115667

Published: Jan. 1, 2025

Language: Английский

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An Effective Energetic Application of Orange Waste in Multi-Component Co-Digestion with Municipal Sewage Sludge

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(3), P. 1537 - 1537

Published: Feb. 3, 2025

A strategy allowing for the application of orange waste (OW) in anaerobic co-digestion with municipal sewage sludge (MSS) has been proposed. For this purpose, introduction an additional component represented by ice-cream processing (IPW) chosen. The experiment was conducted batch mode at a temperature 37 °C. Four series were conducted: S1—the mono-digestion MSS; S2—two-component MSS and 1.5 g OW; S3—two-component 1.0 IPW; S4—three-component MSS, IPW, OW. obtained results indicate that highest methane production achieved presence IPW two- three-component mixtures (S3 S4). It also accompanied improved kinetics, enhanced organic removal, stable process performance. related yields 407.6 401.6 mL/g VS S3 S4, respectively. In turn, S1 S2, parameter established level 351.3 344.3 VS. Additionally, as compared to (S1), energy profit 54 62% possibility effective management OW recovery digestion (AD).

Language: Английский

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Anaerobic Digestion of Cattle Manure Contaminated with an Antibiotic Mixture: A Nature-Based Solution for Environmental Management

Land, Journal Year: 2025, Volume and Issue: 14(2), P. 353 - 353

Published: Feb. 8, 2025

Anaerobic digestion (AD) is a waste-to-energy strategy that leverages natural microbiological processes. It increasingly used in farms to treat manure, resulting biogas for energy production and digestate as fertiliser. However, animal manure often contains antibiotic (AB) residues, raising concerns about their impact on AD efficiency potential spread through use. This multidisciplinary study evaluated the effects of an AB mixture (enrofloxacin, ciprofloxacin sulfamethoxazole) CH4 production, microbial community (Fungi, Bacteria Archaea) dynamics resistance gene (ARG) presence. The experiment cattle manure/digestate ratio 1:35, typical real digesters, with concentrations set at low (2.5 mg kg−1 each) high (7.5 levels. ABs affected cumulative (ranging from 5939 6464 mL) only highest concentration. After 51 days, sulfamethoxazole reached residual levels, while enrofloxacin were partially degraded (<50%), but ARGs significantly reduced. community, particularly prokaryotes, exhibited resilience, maintaining efficient production. Overall findings strongly suggest effective treatment producing good fertiliser, also reducing ARG content well mitigating emissions into atmosphere.

Language: Английский

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Circularity Between Aquaponics and Anaerobic Digestion for Energy Generation

AgriEngineering, Journal Year: 2025, Volume and Issue: 7(5), P. 129 - 129

Published: April 23, 2025

Aquaponics integrates aquaculture and hydroponics, promoting circularity through the recirculation of water nutrients. However, waste management remains a challenge. This study aimed to evaluate anaerobic digestion (AD) aquaponic effluent (AE) combined with cattle manure (CM) for biogas production. An Indian model biodigester was fed AE, CM 1:1, 1:3, 3:1 W (Water):CM, under mono-digestion (MoAD) AE:CM co-digestion (CoAD) conditions. The chemical characteristics substrates digestates were assessed, as well potential production over 19 weeks. Overall, CoAD provided better results regarding characterization at Notably, 1:3 ratio resulted in most promising outcomes among tested demonstrated higher efficiency, initiating by third week reaching highest accumulated volume. It is probable that AE increased dissolved organic load, optimizing conversion matter eliminating need additional process. Thus, emerged alternative valorization aquaponics, contributing renewable energy generation, agricultural sustainability, promotion circular economy.

Language: Английский

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Suspended Particles in Water and Energetically Sustainable Solutions of Their Removal—A Review

Processes, Journal Year: 2024, Volume and Issue: 12(12), P. 2627 - 2627

Published: Nov. 22, 2024

Solid particles (SP) suspended in water represent a common contamination that degrades the quality, not only drinking sources. Particles differ size, nature, and related features like surface charge. Thus, various methods can be utilized for their removal—physical approaches including settling or filtration, chemical coagulation/flocculation, biological microbial degradation, others. This paper aims to summarize currently available SP removal with special attention devoted alternative, cost-effective, sustainable, eco-friendly low energetic demands where power of renewable energy sources utilized. Besides properties, selection proper method (or sequence methods) separation also depends on purpose treatment. Drinking production technologies immediate effect high throughputs, conventional filtration coagulation/flocculation (electro- alternative coagulant/flocculant agents) some hybrid ensure quick cost-effective decontamination. Such usually imply heavy machinery electricity consumption, but current progress allows construction smaller facilities powered by solar wind plant systems. On other hand, decontamination rivers ponds include slower processes based phytoremediation, being long-term sustainable minimal cost investments.

Language: Английский

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