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61,005 resultsShowing papers similar to Insights into combined stress mechanisms of microplastics and antibiotics on anammox: A critical review
ClearMechanisms of inhibition and recovery under multi-antibiotic stress in anammox: A critical review
This review examines how antibiotics, alongside other emerging pollutants like microplastics and nanomaterials, inhibit the anammox process used in wastewater treatment for nitrogen removal. The researchers detail multiple mechanisms by which antibiotics disrupt these specialized bacteria, including damage to cell membranes, enzyme inhibition, and interference with key metabolic pathways. Understanding these mechanisms is important for developing strategies to maintain effective wastewater treatment in the face of increasing antibiotic contamination.
Inhibition of anammox activity by municipal and industrial wastewater pollutants: A review
This review compiles research on how various wastewater pollutants, including microplastics and emerging contaminants, inhibit anammox bacteria used for nitrogen removal in water treatment. Researchers found that pollutant type, concentration, and exposure duration all influence the degree of inhibition, potentially reducing treatment efficiency. The study highlights the importance of understanding pollutant interactions with biological treatment processes as new contaminants continue to appear in wastewater.
How anammox responds to the emerging contaminants: Status and mechanisms
This review synthesizes research on how emerging contaminants including antibiotics, nanomaterials, heavy metals, and microplastics affect anammox bacteria used in wastewater nitrogen removal, identifying inhibition thresholds and possible recovery mechanisms.
A review of microplastics on anammox: Influences and mechanisms
This review summarizes how microplastics affect anammox, a key biological process used in wastewater treatment to remove nitrogen. Microplastics disrupt the microbial communities that perform this process, reducing treatment efficiency depending on plastic concentration, size, and type. Since wastewater treatment is a critical barrier preventing pollutants from reaching drinking water sources, any reduction in treatment performance could increase human exposure to contaminants.
Impacts of Microplastics on Anammox Systems: A Comprehensive Review of Mechanisms and Influences
This review examines how microplastics affect anammox wastewater treatment systems, which are used for biological nitrogen removal. The study found that low concentrations of microplastics can actually enhance system performance by acting as biofilm carriers, while high concentrations inhibit the process through physical clogging, toxic effects, and oxidative stress.
Dissecting the effects of co-exposure to microplastics and sulfamethoxazole on anaerobic digestion
Researchers examined how microplastics combined with the antibiotic sulfamethoxazole affect the anaerobic digestion process used in wastewater treatment. They found that the combination reduced methane production and altered microbial communities, while also promoting widespread antibiotic resistance among the microorganisms. The study highlights concerns about how co-occurring microplastics and antibiotics in sewage could undermine wastewater treatment efficiency.
Deciphering anammox response characteristics and potential mechanisms to polyethylene terephthalate microplastic exposure
This study tested how PET microplastics affect the bacteria used in wastewater treatment for removing nitrogen pollutants. Long-term exposure to high concentrations of PET microplastics reduced the nitrogen removal efficiency by nearly 29%, though the system partially recovered over three months. The findings matter because compromised wastewater treatment means more pollutants could end up in waterways that supply drinking water.
Complex behavior between microplastic and antibiotic and their effect on phosphorus-removing Shewanella strain during wastewater treatment
Researchers examined how microplastics and antibiotics interact in wastewater treatment, finding that their combined stress disrupted phosphorus removal by Shewanella bacteria through altered adsorption behavior and metabolic interference.
Polystyrene nanoparticles regulate microbial stress response and cold adaptation in mainstream anammox process at low temperature
Researchers found that polystyrene nanoplastics at concentrations above 0.5 mg/L significantly impair nitrogen removal by anammox bacteria (microbes that convert ammonia to nitrogen gas) in wastewater treatment, with nanoplastics inducing oxidative stress, damaging cell membranes, and binding to cold-shock proteins that are critical for low-temperature bacterial performance.
The co-presence of polystyrene nanoplastics and ofloxacin demonstrates combined effects on the structure, assembly, and metabolic activities of marine microbial community
Researchers examined the combined effects of polystyrene nanoplastics and the antibiotic ofloxacin on marine microbial communities. They found that the two pollutants together had a greater impact on bacterial community structure and metabolic activity than either one alone. The study suggests that nanoplastics and antibiotics co-occurring in the ocean may work together to disrupt the microorganisms that support marine ecosystem health.
Effects of Microplastics on Nitrogen Removal Performance of Enriched Anammox Cultures
Researchers tested whether polyethylene and polypropylene microplastics affect anammox, a key biological nitrogen removal process used in wastewater treatment. They found that the physical particles themselves did not significantly inhibit the process, but chemical compounds leaching from the plastics, particularly the plasticizer dibutyl phthalate, caused temporary inhibition. Systems using granular or attached biomass structures showed better resilience to these chemical effects than suspended growth systems.
The contamination of microplastics and antibiotics in aquaculture wastewater: Their remediation technologies and interaction effects on their removal
This review paper found that tiny plastic particles (microplastics) and antibiotics in fish farm wastewater interact with each other in ways that make both pollutants harder to remove from water. The plastic bits can soak up antibiotics and change how they break down, while antibiotics can interfere with removing the plastics. This matters because both microplastics and antibiotic pollution can harm human health, so we need better cleanup methods that tackle both problems together.
Microplastics and anammox: Unravelling the hidden threats to nitrogen cycling and microbial resilience
This review examined how microplastics disrupt nitrogen cycling in soil by interfering with specialized bacteria that remove nitrogen from the environment. Researchers found that microplastics alter microbial habitats, destabilize bacterial communities, and attract heavy metals that further inhibit these essential soil processes, with effects varying based on soil acidity and organic matter content.
Co-occurrence of microplastics and triclosan inhibited nitrification function and enriched antibiotic resistance genes in nitrifying sludge
Researchers found that co-exposure to four types of microplastics (PE, PS, PVC, and PA) and the antimicrobial agent triclosan inhibited nitrification function and enriched antibiotic resistance genes in nitrifying sludge from wastewater treatment. The combined presence of microplastics and triclosan posed greater risk to biological wastewater treatment performance than either contaminant alone.
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.
Less toxic combined microplastics exposure towards attached Chlorella sorokiniana in the presence of sulfamethoxazole while massive microalgal nitrous oxide emission under multiple stresses
Researchers studied how microplastics from different plastic types (polyethylene, PVC, and polyamide) interact with an antibiotic in a microalgae-based wastewater treatment system. They found that combining different types of microplastics together was more harmful to the algae than mixing microplastics with the antibiotic. The study also showed that stressed algae released more nitrous oxide, a potent greenhouse gas, meaning microplastic pollution in wastewater could worsen climate change.
Combined toxic effects of nanoplastics and norfloxacin on mussel: Leveraging biochemical parameters and gut microbiota
Researchers exposed mussels to nanoplastics and the antibiotic norfloxacin, both alone and together, and found that the combination caused greater biochemical stress than either pollutant alone. Nanoplastics appeared to carry the antibiotic into mussel tissues, increasing its bioavailability and impact on gut microbiota. The findings suggest that nanoplastics can amplify the toxicity of other contaminants in marine organisms.
Nanophotocatalytic synergistic degradation of antibiotics and microplastics: Mechanisms, material design, and environmental applications
This review examines how microplastics and antibiotics interact in water during photocatalytic treatment, finding that microplastics can both help (by shuttling electrons) and hinder (by shielding light or hosting biofilms) the degradation process, depending on conditions. Aged microplastics — which have more surface oxygen groups — adsorb more antibiotics, making them tougher composite targets for treatment systems. Understanding these interactions is essential for designing water purification systems that can handle the combined pollution reality of modern waterways.
Combined Toxicity of Microplastics and Antimicrobials on Animals: A Review
This review summarizes research on the combined toxic effects of microplastics and antimicrobial agents (like antibiotics) on animals in both water and land environments. When microplastics carry antimicrobials, the combined exposure is often worse than either pollutant alone, causing greater damage to immune systems, reproduction, and gut bacteria. This is concerning for human health because microplastics in the environment can concentrate antibiotics and spread antibiotic resistance.
Impaired denitrification of aerobic granules in response to micro/nanoplastic stress: Insights from interspecies interactions and electron transfer processes
This study found that micro- and nanoplastics in wastewater disrupt the ability of beneficial bacteria to remove nitrogen through a process called denitrification. After 90 days of plastic exposure, the communication system bacteria use to coordinate their activity broke down, leading to an imbalance where some bacteria stopped contributing while still consuming shared resources. This reduced the overall efficiency of biological wastewater treatment, a system many communities rely on to clean their water.
Microplastics and tetracycline affecting apoptosis, enzyme activities and metabolism processes in the Aurelia aurita polyps: insights into combined pollutant effects
Researchers studied how microplastics and the antibiotic tetracycline together affect moon jellyfish polyps, examining cell death, enzyme activity, and metabolism. They found that combined exposure triggered more severe oxidative stress and metabolic disruption than either pollutant alone. The findings suggest that the co-presence of microplastics and antibiotics in marine environments may pose compounding threats to bottom-dwelling organisms.
Higher toxicity induced by co-exposure of polystyrene microplastics and chloramphenicol to Microcystis aeruginosa: Experimental study and molecular dynamics simulation
Researchers studied what happens when the antibiotic chloramphenicol and polystyrene microplastics are present together in water containing blue-green algae. The study found that the combined exposure was more toxic to the algae than either pollutant alone, disrupting photosynthesis and gene expression. The findings suggest that microplastics and antibiotics may interact in ways that amplify their harmful effects on aquatic ecosystems.
Insight into combined pollution of antibiotics and microplastics in aquatic and soil environment: Environmental behavior, interaction mechanism and associated impact of resistant genes
This review examines the combined pollution created when microplastics absorb antibiotics in water and soil environments. Researchers found that microplastics can concentrate antibiotics on their surfaces, and this combination promotes the spread of antibiotic-resistant genes in microbial communities. The study highlights that the interaction between these two emerging pollutants may pose greater environmental and health risks than either one alone.
Co-effects of silver nanoparticles and microplastics on nitrifying microorganisms from wastewater treatment plants and their activities
This study investigated how silver nanoparticles and microplastics — two emerging contaminants — together affect the bacteria responsible for removing ammonia in wastewater treatment. High concentrations of silver nanoparticles inhibited ammonia oxidation, and the combination with microplastics altered bacterial community composition, raising concerns about wastewater treatment performance.