We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
20 resultsShowing papers similar to Microplastics in granular sequencing batch reactors: Effects on pollutant removal dynamics and the microbial community
ClearImpact of Polyethylene Terephthalate Microplastics on Aerobic Granular Sludge Structure and EPS Composition in Wastewater Treatment
Researchers investigated how PET microplastics affect the structure and function of aerobic granular sludge used in wastewater treatment. Higher microplastic concentrations led to changes in granule size, altered the composition of extracellular polymeric substances, and shifted microbial community structure. The findings suggest that microplastic contamination in wastewater could compromise the stability and efficiency of biological treatment processes.
[Change in Granulation Potential and Microbial Enrichment Characteristics of Sludge Induced by Microplastics].
This study found that polyethylene terephthalate (PET) microplastics accelerate the formation of granular sludge in wastewater treatment plants by increasing sticky protein secretions, but continuous exposure ultimately degrades treatment performance and disrupts the microbial communities responsible for removing nitrogen. This matters because it suggests microplastics entering sewage systems could compromise the efficiency of the very facilities designed to filter them out.
Insights into the microbial response of anaerobic granular sludge during long-term exposure to polyethylene terephthalate microplastics
Researchers investigated how polyethylene terephthalate microplastics affect anaerobic granular sludge used in wastewater treatment over 84 days. The study found that at relatively low concentrations, PET microplastics had minimal impact, but at higher concentrations they disrupted the microbial community structure and reduced the efficiency of the anaerobic treatment process.
Impact of the concentration and type of microplastics on the treatment efficiency and biomass structure in aerobic granular sludge reactors
Researchers investigated how polyethylene terephthalate and polyethylene microplastics at varying concentrations affect treatment efficiency, granule morphology, extracellular polymer production, microbial species composition, and metabolic activity in aerobic granular sludge reactors used for wastewater treatment. The study tested four hypotheses regarding MP effects on both the biological performance and structural integrity of aerobic granular sludge as a promising technology for MP-contaminated wastewater.
Response of aerobic granular sludge under polyethylene microplastics stress: Physicochemical properties, decontamination performance, and microbial community
Researchers investigated the impact of polyethylene microplastics on aerobic granular sludge used in wastewater treatment. The study found that microplastics significantly disrupted sludge structure, settling properties, and enzyme activities related to denitrification and phosphorus removal, with increased reactive oxygen species and cell membrane damage at higher concentrations.
Performance and bacterial community profiles of sequencing batch reactors during long-term exposure to polyethylene terephthalate and polyethylene microplastics
Researchers examined how PET and polyethylene microplastics affect wastewater treatment in sequencing batch reactors, finding that microplastics alone did not significantly impair treatment performance but did alter bacterial community composition over long-term exposure.
Effects of polyethylene terephthalate microplastics on performance of sequencing-batch membrane bioreactor for simulated municipal wastewater treatment
Researchers assessed the impact of PET microplastics on a sequencing-batch membrane bioreactor treating simulated municipal wastewater and found that PET MPs altered microbial community composition, reduced treatment efficiency at higher concentrations, and increased membrane fouling. The study highlights risks to wastewater infrastructure from microplastic contamination.
Impact of polyethylene microplastics on the nitrogen removal and bacterial community in sequencing batch reactor at different hydraulic retention times
Researchers examined how polyethylene microplastics affect nitrogen removal performance in biological wastewater treatment at different hydraulic retention times. The study found that the presence of microplastics amplified the negative effects of shortened treatment times on nitrogen removal efficiency and altered bacterial communities and enzyme levels involved in nitrification and denitrification, offering new insights into how microplastics interfere with wastewater treatment processes.
Insight into effect of polyethylene microplastic on nitrogen removal in moving bed biofilm reactor: Focusing on microbial community and species interactions
Researchers studied how polyethylene microplastics affect nitrogen removal in wastewater treatment bioreactors and found that low concentrations slightly improved the process, while higher concentrations disrupted it. The microplastics changed the microbial communities responsible for breaking down nitrogen in wastewater. This matters because less effective wastewater treatment means more nitrogen pollution in waterways, and microplastics entering treatment plants could reduce their ability to clean water effectively.
Responses of SNEDPR-AGS system under long-term exposure of polyethylene terephthalate microplastics for treating low C/N wastewater: Granular effect and microbial structure
Researchers tested how PET microplastics affect a specialized wastewater treatment system designed for low-carbon wastewater over a 180-day period. They found that while the microplastics initially had little effect, long-term exposure degraded the structure of the treatment granules, reduced nitrogen removal efficiency, and shifted the microbial community. The study suggests that microplastic contamination in wastewater could gradually undermine the performance of advanced treatment systems.
Effects of microplastics on granular sludge: A review
This review examined how microplastics affect granular sludge properties and wastewater treatment efficiency in biological treatment systems, with wastewater plants considered major sinks for microplastics. The review found that harmful effects on granular characteristics are closely associated with microplastic size and concentration, summarizing how MPs disrupt granule formation and settleability.
Insight into response characteristics and inhibition mechanisms of anammox granular sludge to polyethylene terephthalate microplastics exposure
This study tested how PET microplastics affect the anammox process, a key biological method used in wastewater treatment to remove nitrogen. At higher concentrations, PET particles reduced treatment efficiency by about 16% and weakened the structure of the bacterial granules that perform the process. The findings matter because microplastics in sewage could impair the very systems designed to clean our wastewater.
Mechanisms underlying the detrimental impact of micro(nano)plastics on the stability of aerobic granular sludge: Interactions between micro(nano)plastics and extracellular polymeric substances
Researchers found that both micro- and nanoplastics at realistic concentrations harmed the performance of aerobic granular sludge, a technology used for wastewater treatment, by reducing its ability to remove nitrogen. The plastic particles interacted with the sticky substances that hold the sludge granules together, weakening their structural integrity. The study reveals a specific mechanism by which plastic pollution can undermine wastewater treatment systems that communities rely on for clean water.
Exposure to polyamide 66 microplastic leads to effects performance and microbial community structure of aerobic granular sludge
Polyamide 66 microplastics were introduced into aerobic granular sludge bioreactors at varying concentrations, initially reducing contaminant removal efficiency but recovering to near-control levels by the end of the experiment. The study shows that while microplastics transiently disrupt biological wastewater treatment, the microbial community can adapt over time.
The effects of microplastics and nanoplastics on nitrogen removal, extracellular polymeric substances and microbial community in sequencing batch reactor
Researchers found that polystyrene nanoplastics and microplastics impaired nitrogen removal in sequencing batch reactors by reducing denitrification rates, altering extracellular polymeric substances, and shifting microbial community composition in activated sludge.
Adaptation responses of microalgal-bacterial granular sludge to polystyrene microplastic particles in municipal wastewater
Researchers found that polystyrene microplastics of varying sizes did not significantly impair organic, ammonia, or phosphorus removal in microalgal-bacterial granular sludge systems treating municipal wastewater, though the microplastics did alter microbial community composition.
The Effects of Microplastics on Floc Formation, Nutrient Removal and Settleability in Wastewater Treatment
Researchers examined the interactions of microplastics with activated sludge in wastewater treatment plants, investigating effects on floc formation, nutrient removal efficiency, and settleability to understand how microplastic contamination may compromise treatment performance.
The impacts of biodegradable and non-biodegradable microplastic on the performance and microbial community characterization of aerobic granular sludge
Researchers compared the effects of biodegradable polylactic acid microplastics and non-biodegradable polyethylene microplastics on aerobic granular sludge used in wastewater treatment. They found that high concentrations of both types impaired the sludge's ability to remove organic pollutants, but both actually enhanced nitrogen and phosphorus removal at moderate levels. The study reveals that even biodegradable microplastics can disrupt wastewater treatment processes in unexpected ways.
Response of aerobic granular sludge under acute inhibition by polystyrene microplastics: Activity, aggregation performance, and microbial analysis
Researchers investigated how different concentrations of polystyrene microplastics affect the performance of aerobic granular sludge used in wastewater treatment. The study found that increasing microplastic concentrations inhibited nitrogen removal rates and disrupted the microbial community structure within the sludge. Evidence indicates that microplastic contamination in wastewater can compromise the effectiveness of biological treatment processes.
Micro- and nanoplastics in granular sludge systems: mechanisms of disruption, retention, and microbial adaptation in wastewater treatment technologies
This review examines how micro- and nanoplastics disrupt the biological systems used to treat wastewater, focusing on granular sludge technologies. Plastic particles damage the microbial communities that break down waste by causing oxidative stress and breaking apart the protective structures that hold bacteria together. This matters because if wastewater treatment becomes less effective due to plastic contamination, more pollutants including microplastics could pass through into waterways that supply drinking water.