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61,005 resultsShowing papers similar to Effects of Different Microplastics on Methane Production and Microbial Community Structure in Anaerobic Digestion of Cattle Manure
ClearSystematic study of microplastics on methane production in anaerobic digestion: Performance and microbial response
Microplastics are increasingly found in wastewater treatment systems, and this study systematically examined how different types, concentrations, and sizes of microplastics affect the anaerobic digestion process used to break down sewage sludge and generate biogas. Polyethylene microplastics were found to inhibit methane production, with finer particles and higher concentrations causing greater disruption to the microbial communities driving digestion. The findings matter because microplastics in sewage sludge can impair the treatment process and also end up spread on agricultural land when sludge is used as fertilizer.
Unraveling synergistic cascade inhibition of methane production in anaerobic digestion system by polyethylene microplastics and domestic sewage: Physical adsorption, metabolic disruption, and microbial community decoupling
Researchers systematically explored how the co-presence of polyethylene microplastics and domestic sewage inhibits methane production in anaerobic digestion systems, finding that physical adsorption of microplastics, propionic acid accumulation, and microbial community decoupling identified via multi-omics analysis collectively suppressed cumulative CH4 production by 41.8% compared to controls.
Effects of Micro(nano)plastics on Anaerobic Digestion and Their Influencing Mechanisms
This review examines how micro- and nanoplastics from organic waste streams affect anaerobic digestion (AD) performance, covering impacts on methane production, microbial community structure, and enzyme activity. It identifies plastic polymer type and concentration as key variables determining whether MPs stimulate or inhibit digestion processes.
Evaluation the impact of polystyrene micro and nanoplastics on the methane generation by anaerobic digestion
Researchers tested the effect of polystyrene microplastics and their leached chemical additives on anaerobic digestion systems, finding that microplastic presence reduced methane generation efficiency and disrupted microbial community function.
An in-depth analysis of microbial response to exposure to high concentrations of microplastics in anaerobic wastewater fermentation
This study investigated how high concentrations of three common microplastic types affect the microbes used in anaerobic wastewater treatment, finding that microplastics reduced methane production by up to 56%. PVC had the most damaging effect on the microbial communities that break down waste, while polyethylene was somewhat less disruptive. The findings matter because impaired wastewater treatment means more pollutants, including microplastics themselves, could escape into waterways that feed human water supplies.
Revealing the Mechanisms of Polyethylene Microplastics Affecting Anaerobic Digestion of Waste Activated Sludge
Researchers studied how polyethylene microplastics affect the anaerobic digestion of sewage sludge, a common wastewater treatment process. They found that higher concentrations of microplastics significantly reduced methane production by disrupting microbial communities and enzyme activities essential for digestion. The study reveals that microplastic contamination in wastewater systems can undermine the efficiency of sludge treatment and biogas generation.
Insights into the impact of polyethylene microplastics on methane recovery from wastewater via bioelectrochemical anaerobic digestion
Researchers found that polyethylene microplastics inhibited methane recovery in bioelectrochemical anaerobic digestion systems by disrupting microbial communities and electrochemical performance, though low concentrations had less severe effects.
Effects of microplastics on humification and fungal community during cow manure composting
Researchers studied how polyethylene, PVC, and biodegradable PHA microplastics affect the composting process of cow manure. They found that all types of microplastics reduced humification quality, decreased fungal community diversity during peak composting temperatures, and some types increased the relative abundance of plant-pathogenic fungi.
Fate and Impacts of Microplastics in Sludge Anaerobic Digestion: Effects on Methanogenic and Acidogenic Pathways
This review examined how microplastics in sewage sludge influence anaerobic digestion performance, covering effects on methane production, volatile fatty acid accumulation, and microbial community function. MPs inhibited methanogenesis at higher concentrations by altering microbial community structure and disrupting electron transfer pathways in the anaerobic digestion process.
Effect of microplastic on anaerobic digestion of wasted activated sludge
This study investigated how varying doses of microplastics affect methane production during anaerobic digestion of waste activated sludge, testing concentrations from 0 to 100,000 particles per gram. Higher microplastic doses progressively inhibited methane production, suggesting that high microplastic loads in wastewater treatment sludge can impair biogas recovery.
Comprehensive meta-analysis reveals the impact of non-biodegradable plastic pollution on methane production in anaerobic digestion
This meta-analysis found that microplastics and nanoplastics interfere with anaerobic digestion, a process used to treat organic waste and produce methane. Smaller nanoplastics had a greater impact, suggesting that plastic contamination in waste could reduce the efficiency of this important waste treatment and energy recovery method.
A review of mechanisms underlying the impacts of (nano)microplastics on anaerobic digestion
This review summarized mechanisms by which nano- and microplastics affect anaerobic digestion in wastewater treatment, covering inhibition and enhancement pathways, impacts on biogas production and methane yield, and effects on microbial community structure.
Responses of anaerobic hydrogen-producing granules to acute microplastics exposure during biological hydrogen production from wastewater
Researchers examined how anaerobic hydrogen-producing granules respond to microplastic exposure during biological hydrogen production from wastewater, finding that multiple coexisting microplastic types reduced hydrogen yields and altered microbial community composition.
Size-dependent effects of polystyrene microplastics on anaerobic digestion performance of food waste: Focusing on oxidative stress, microbial community, key metabolic functions
Researchers investigated how polystyrene microplastics of different sizes affect anaerobic digestion of food waste and found that smaller particles caused greater inhibition of methane production, with reductions up to 33%. The study suggests that small microplastics induce more oxidative stress in microbial communities and suppress key enzymes involved in methane-producing metabolic pathways.
Beyond simple inhibition: Unveiling the non-monotonic impact and multi-level mechanisms of aged microplastics on sludge anaerobic digestion
Researchers used plasma treatment to precisely control polypropylene microplastic aging and tested its effects on anaerobic sludge digestion, finding that while unaged microplastics strongly inhibited methane production, optimally aged microplastics at a carbonyl index of 0.219 recovered methane yield to 83%.
Succession of bacterial community during electroactive methanogenic biofilm development under microplastic manipulation
Researchers studied how PET microplastics affect the formation and function of methane-producing biofilms used in waste-to-energy systems. The study found that microplastic exposure reduced the proportion of living cells in the biofilm and shifted the microbial community composition, ultimately decreasing methane production efficiency.
Concentration-dependent effects of polystyrene microplastics on methanogenic activity and microbial community shifts in sewer sediment
This study tested how polystyrene microplastics affect methane-producing microbes in sewer sediments and found that low concentrations boosted methane production by over 200%, while higher concentrations had a smaller stimulating effect. The findings matter for wastewater management because microplastics entering sewer systems could alter greenhouse gas emissions and disrupt the microbial processes that treatment plants rely on.
A Study of the Effects of Microplastics on Microbial Communities in Marine Sediments
This study investigated how the presence of microplastics in marine sediments affects microbial communities and, specifically, the methane cycle, finding that microplastics significantly altered microbial community structure and function. Since marine sediment microbes play a critical role in regulating greenhouse gas emissions, microplastic contamination could have broader climate-relevant effects beyond direct toxicity.
Fate and effect of Polyamide-6 microplastics in mesophilic and thermophilic anaerobic digestion
This study examined the fate and impact of polyamide-6 microplastics during mesophilic and thermophilic anaerobic digestion, finding that digestion temperature affects polymer degradation rates and that microplastics influence methane production and microbial communities.
Unraveling the effects and mechanisms of microplastics on anaerobic fermentation: Exploring microbial communities and metabolic pathways
Researchers investigated how five types of microplastics affect the anaerobic fermentation process used to treat sewage sludge. They found that polyethylene microplastics caused the greatest reduction in volatile fatty acid production, while polyvinyl chloride had the least impact, and all types disrupted microbial communities in distinct ways. The study suggests that microplastic contamination in wastewater could meaningfully interfere with sludge treatment efficiency.
[Effects of Typical Microplastics on Methanogenesis and Antibiotic Resistance Genes in Anaerobic Digestion of Sludge].
Researchers explored the impacts of polyamide, polyethylene, and polypropylene microplastics on methanogenesis and antibiotic resistance gene dynamics during anaerobic digestion of waste sludge, examining how microplastic contamination affects both biogas production and resistance gene enrichment.
Thermally aged PET microplastics disrupt methanogenic syntrophy via toxic leachates: Microbial assembly dynamics unravel biotoxicity in anaerobic digestion
Researchers found that thermally aged PET microplastics disrupted methane production during anaerobic digestion more severely than pristine microplastics. The aging process increased reactive oxygen species levels and released toxic chemical compounds that interfered with the microbial communities responsible for biogas production, with longer aging periods causing greater inhibition of methane upgrading.
Resilience and functional redundancy of methanogenic digestion microbiome safeguard recovery of methanogenesis activity under the stress induced by microplastics
Researchers studied how microplastics and nanoplastics affect the microbiome responsible for methane production during anaerobic digestion of wastewater sludge. The study found that while plastic particles initially disrupted methanogenesis, the microbial community showed resilience and functional redundancy that allowed methane production to recover over time.
Impact of alkaline thermal hydrolysis on anaerobic digestion of mixed sludge contaminated with microplastics
Researchers tested alkaline thermal hydrolysis pretreatment on sludge containing polyethylene and PVC microplastics before anaerobic digestion, finding that the pretreatment altered how microplastics affected subsequent methane production, with effects varying by polymer type and concentration.