We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to How anammox responds to the emerging contaminants: Status and mechanisms
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.
Insights into combined stress mechanisms of microplastics and antibiotics on anammox: A critical review
This review examines how microplastics and antibiotics together affect anammox bacteria, which are important for removing nitrogen from wastewater. Researchers found that combined exposure disrupts the bacteria through oxidative stress, cell membrane damage, and interference with key enzymes, often more severely than either pollutant alone. The study highlights that microplastic and antibiotic contamination in wastewater could undermine biological treatment processes.
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.
Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment
This review summarizes advances in the microbial communities involved in nitrogen removal from wastewater, covering nitrification, denitrification, and newer processes such as anammox. Understanding these microbiota is essential for improving biological treatment strategies to address excess nitrogenous pollutants in aquatic ecosystems.
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.
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.
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.
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.
Insight Into the Factors Inhibiting the Anammox Process in Wastewater
This review examines the factors that inhibit the anaerobic ammonium oxidation (anammox) process used for biological nitrogen removal in wastewater treatment. The authors assess how substrates, organic matter, salts, heavy metals, phosphate, and sulfide suppress anammox activity and summarize strategies to mitigate these inhibitory effects in practical applications.
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.
Advances in responses of microalgal-bacterial symbiosis to emerging pollutants in wastewater
Researchers reviewed how microalgal-bacterial symbiotic systems respond to antibiotics, heavy metals, nanoparticles, and microplastics in wastewater, finding that antibiotics exhibit hormesis effects (stimulatory at low doses, inhibitory at high doses) and that the consortium tolerates heavy metals below 1 mg/L but loses treatment efficacy at 10 mg/L.
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.
Function of nanomaterials in the treatment of emerging pollutants in wastewater
Researchers reviewed the application of nanomaterials for treating emerging pollutants in wastewater, including microplastics, antibiotics, and endocrine disruptors. The study suggests that nanotechnology-based approaches offer promising advantages over conventional treatment methods in terms of efficiency and sustainability for addressing new types of water contaminants.
Distinct influence of preservatives on microbial community and resistance gene in bio-carriers biofilm and microplastics biofilm as revealed in sulfur autotrophic denitrification coupled with anammox system
Researchers examined how preservatives commonly found in wastewater affect microbial communities on microplastic biofilms versus bio-carrier biofilms in a denitrification system. The study found that co-exposure to methylparaben and benzethonium chloride reduced nitrogen removal efficiency and enhanced the prevalence of antibiotic resistance genes, particularly on microplastic surfaces.
Anammox-MBR Technology: Breakthroughs and Challenges in Sustainable Nitrogen Removal from Wastewater
This review covers recent advances in combining anaerobic ammonium oxidation (anammox) with membrane bioreactor (MBR) technology for sustainable nitrogen removal from wastewater, emphasizing energy efficiency and potential for reducing nitrous oxide greenhouse gas emissions.
Unveiling the plastisphere in anammox process: Physicochemical evolution of microplastics and microbial succession dynamics
Researchers tracked how polyethylene terephthalate microplastics change physically and chemically over 30 days in an anaerobic wastewater treatment system. They found that while the microplastics had minimal impact on nitrogen removal efficiency, they developed distinct microbial communities on their surfaces that evolved over time. The study provides new insights into how microplastics interact with beneficial microbes in wastewater treatment processes.
Understanding emerging contaminants in water and wastewater: A comprehensive review on detection, impacts, and solutions
This review covers emerging contaminants in water including pharmaceuticals, PFAS, microplastics, and nanomaterials that escape conventional water treatment and persist in the environment. It evaluates advanced detection techniques and newer treatment methods such as membrane filtration, advanced oxidation, and bioremediation to address these pollutants that pose ongoing risks to public health.
The impact of nanomaterials in enhancing wastewater treatment processes: A review
This review examines how nanomaterials can improve wastewater treatment, including the removal of emerging contaminants like microplastics that traditional methods struggle to capture. Nanoparticles, nanocomposites, and nanocatalysts can enhance pollutant removal through better filtering, chemical breakdown, and adsorption. While promising, the review also notes that nanomaterials themselves could pose environmental risks if not managed carefully during and after the treatment process.
Insights into soil autotrophic ammonium oxidization under microplastics stress: Crossroads of nitrification, comammox, anammox and Feammox
This study found that microplastics in soil disrupted key nitrogen cycling processes carried out by bacteria, including nitrification and other pathways essential for soil fertility. Different types of microplastics had varying effects on the microbial communities responsible for converting nitrogen into forms plants can use. Since nitrogen availability directly affects crop growth, microplastic contamination in agricultural soil could subtly undermine food production.
Impact and microbial mechanism of continuous nanoplastics exposure on the urban wastewater treatment process
Researchers investigated the effects of continuous nanoplastic exposure on wastewater treatment over 200 days, finding that while total nitrogen removal was not significantly inhibited, nanoplastics altered microbial community composition and affected nitrification and denitrification processes.
Microplastic interference influences Pseudomonas fluorescens in denitrification efficiency of wastewater treatment
Researchers investigated how microplastics interfere with Pseudomonas fluorescens activity in denitrification processes at wastewater treatment plants, finding that microplastic contamination disrupted microbial performance and could compromise nitrogen removal from wastewater.
Effects of unmodified and amine-functionalized polystyrene nanoplastics on nitrogen removal by Pseudomonas stutzeri: strain characteristics, extracellular polymers, and transcriptomics
Researchers investigated how two types of polystyrene nanoplastics — plain and amine-modified — affect the ability of bacteria to remove nitrogen from water, a process important for wastewater treatment. The amine-coated nanoplastics were found to be more disruptive than unmodified ones, altering the bacteria's cell surface, extracellular proteins, and gene expression. This matters because nanoplastics entering wastewater systems could undermine the biological processes that keep treated water safe to release into the environment.