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61,005 resultsShowing papers similar to Effects of Micro(nano)plastics on Anaerobic Digestion and Their Influencing Mechanisms
ClearA 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.
The Effect of Microplastics Exposure on Anaerobic Digestion of Food Waste: A Review
This review examines how microplastics present in food waste affect the anaerobic digestion process used to convert organic waste into methane. Researchers found that the physical and chemical properties of microplastics, including type, size, and concentration, can impair methane production, disrupt microbial communities, and destabilize the digestion system. The study highlights mechanisms such as chemical leaching, enzyme interference, and oxidative stress through which microplastics hinder the waste-to-energy conversion process.
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.
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.
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 on mechanistic understanding of microplastic pollution on the performance of anaerobic digestion
This review examines how microplastic contamination affects anaerobic digestion, a process used to convert organic waste into biogas. Researchers found that microplastics can harm the microbial communities essential to this process through direct contact, leaching of toxic chemicals, and generating harmful reactive oxygen species. The findings raise concerns that microplastic pollution could reduce the efficiency of waste treatment systems and contribute to the spread of antibiotic resistance genes.
Overcoming micro/nanoplastics-induced inhibition in anaerobic digestion: Advances in remediation techniques
This review examines how micro- and nanoplastics inhibit anaerobic digestion performance — reducing biogas yield and organic removal — and surveys remediation strategies including physical, chemical, and biological approaches to overcome their disruptive effects in waste treatment systems.
Systematic 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.
Impact of micro-nanoplastics on biochemical phases of anaerobic digestion in sewage sludge treatment: mechanistic insights and future prospects
Micro- and nanoplastics were found to disrupt the biochemical phases of anaerobic digestion, affecting the efficiency of the biological process used to treat organic waste. Understanding these impacts is important because anaerobic digestion is a common wastewater and sludge treatment method that may both receive and process microplastic-contaminated materials.
Differential effects of petroleum-based and bio-based microplastics on anaerobic digestion: A review
This review compared the effects of petroleum-based and bio-based microplastics on anaerobic digestion processes, finding that both types can inhibit microbial activity and alter digestion performance, with the relative impacts depending on plastic polymer type and concentration.
Microplastics in anaerobic digestion: occurrence, impact, and mitigation strategies
This review examines the presence and impact of microplastics within anaerobic digestion systems used to process sewage sludge and organic waste. Researchers found that microplastics enter these systems through diverse waste inputs and may affect biogas production, microbial community composition, and overall process performance. The study highlights the need for further research into how microplastics interact with anaerobic digestion and what mitigation strategies could minimize their interference.
Occurrence, effect, and fate of residual microplastics in anaerobic digestion of waste activated sludge: A state-of-the-art review
This review assessed the occurrence, behavior, and fate of microplastics in anaerobic digestion of waste activated sludge, finding that MPs survive digestion largely intact but can affect methane production and microbial community composition, and that digestate land application remains a major pathway for releasing sludge-retained MPs to soil.
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.
Polystyrene nanoplastics shape microbiome and functional metabolism in anaerobic digestion
Researchers studied how polystyrene nanoplastics and microplastics affect the microbial communities and biochemical processes in anaerobic digestion systems used for waste treatment. They found that nanoplastics had a more disruptive effect than microplastics, significantly altering the composition and metabolic functions of the microbial community. The study suggests that plastic contamination in waste streams could reduce the efficiency of anaerobic digestion, a widely used waste processing technology.
Microplastic Behavior in Sludge Pretreatment and Anaerobic Digestion: Impacts, Mechanistic Insights, and Mitigation Strategies
This review examines how microplastics behave during sludge pretreatment and anaerobic digestion, finding that microplastics frequently persist through these processes and can affect methane production and microbial communities when present at elevated concentrations, calling for mitigation strategies in wastewater treatment.
Effects of Different Microplastics on Methane Production and Microbial Community Structure in Anaerobic Digestion of Cattle Manure
Researchers tested how four types of microplastics affect methane production during anaerobic digestion of cattle manure. They found that polyethylene microplastics increased cumulative methane production by nearly 12% by enriching methane-producing microorganisms, while polyhydroxyalkanoate microplastics inhibited methane production by suppressing key methanogenic communities.
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.
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.
Unmasking microplastics in anaerobic digestion: Hidden threats, synergistic pollutants, and biodegradation Frontiers — A comprehensive hotspot review
Researchers reviewed how microplastics disrupt anaerobic digestion — the process used to convert organic waste into biogas — finding that microplastics suppress methane production, harm microbial communities, and carry along other pollutants like antibiotics and heavy metals into the system.
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.
Deciphering the role of polystyrene microplastics in waste activated sludge anaerobic digestion: Changes of organics transformation, microbial community and metabolic pathway
Researchers found that polystyrene microplastics in sewage sludge affected the anaerobic digestion process used to treat waste, with low concentrations slightly boosting methane production but high concentrations reducing it by up to 11%. The microplastics disrupted key bacterial communities and enzyme activities needed for proper waste breakdown. This matters because wastewater treatment plants handle enormous volumes of microplastic-laden sludge, and impaired digestion could reduce treatment effectiveness and release more pollutants into the environment.
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.
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.
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.