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61,005 resultsShowing papers similar to Advances in Studies on Microbiota Involved in Nitrogen Removal Processes and Their Applications in Wastewater Treatment
ClearA 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.
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.
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.
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.
Advances in Nitrogen-Rich Wastewater Treatment: A Comprehensive Review of Modern Technologies
This review covers biological, physical, and chemical methods for removing nitrogen from wastewater, comparing techniques like simultaneous nitrification-denitrification and membrane filtration. While not directly focused on microplastics, advanced wastewater treatment is relevant because improved systems could also help capture microplastic particles before they reach drinking water sources.
Mechanisms 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.
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.
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.
Review of emerging technologies for nutrient removal in wastewater treatment
This review summarizes emerging technologies for removing excess nitrogen and phosphorus from wastewater, including advanced biological, membrane, and chemical oxidation methods. While focused on nutrient removal, many of these same technologies also show promise for filtering out microplastics from water. Improving wastewater treatment is critical because treatment plants are a major pathway through which microplastics enter rivers, lakes, and eventually drinking water sources.
A Review on Microorganisms in Constructed Wetlands for Typical Pollutant Removal: Species, Function, and Diversity
This review analyzed the community structure, diversity, and function of microorganisms in constructed wetlands for pollutant removal, examining how microbial communities drive degradation of nitrogen, phosphorus, heavy metals, and emerging contaminants.
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.
Nitrogen removal in recirculating aquaculture water with high dissolved oxygen conditions using the simultaneous partial nitrification, anammox and denitrification system
Researchers operated a simultaneous nitrification-anammox-denitrification bioreactor on aquaculture wastewater for 180 days without supplemental carbon, achieving near-complete nitrogen removal under high oxygen conditions by harnessing Pseudoxanthomonas bacteria and coordinated microbial nitrogen-cycling communities in a biofilm.
Feammox Bacterial Biofilms as an Alternative Biological Process for the Removal of Nitrogen from Agricultural Wastewater
Researchers developed hollow fiber membrane bioreactors using Feammox bacteria — microorganisms that anaerobically oxidize ammonium while reducing iron — and demonstrated up to 20.4% ammonium removal from brewery wastewater, offering a sustainable biological approach to reducing excess reactive nitrogen from agricultural effluents.
Recent advances in impacts of microplastics on nitrogen cycling in the environment: A review
This review examined how microplastics affect nitrogen cycling, a critical process in soil, water, and sediment ecosystems driven by microbial communities. Researchers found that the type, size, and concentration of microplastics can alter microbial populations responsible for nitrogen transformation, disrupting processes like nitrification and denitrification. The study highlights that chemical additives released from microplastics may also play a role, though the underlying mechanisms are not yet fully understood.
Microbial Community in a Wastewater System
Researchers characterized microbial community composition in a wastewater treatment system, examining how treatment stage and operational conditions shape bacterial diversity and functional potential relevant to pollutant degradation.
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.
Efficiency of Microalgae Employment in Nutrient Removal (Nitrogen and Phosphorous) from Municipal Wastewater
This review examines how microalgae (tiny aquatic plants) can be used to remove nitrogen and phosphorus pollutants from municipal wastewater. While not directly about microplastics, this research is relevant because effective wastewater treatment is one way to reduce the amount of microplastics that reach waterways and eventually the food chain.
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.
Effect evaluation of microplastics on activated sludge nitrification and denitrification
Researchers found that microplastics entering wastewater treatment plants interfere with the nitrification and denitrification processes carried out by activated sludge microbes, potentially reducing the effectiveness of nutrient removal in sewage treatment. This effect could undermine water quality if microplastic loads in wastewater continue to increase.
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.
The impact of microplastics and nanoplastics on biological nitrogen removal processes: Exacerbating the greenhouse effect
This review examines how microplastics and nanoplastics accumulate in wastewater treatment plants and interfere with the biological processes that remove nitrogen from water. The disruption leads to increased emissions of nitrous oxide, a powerful greenhouse gas, making the problem both an environmental health concern and a climate issue. The findings suggest that microplastic contamination in wastewater is undermining treatment effectiveness while simultaneously contributing to global warming.
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.
Ecological Functions of Microbes in Constructed Wetlands for Natural Water Purification
This review examines the ecological functions of microbial communities in constructed wetlands for wastewater treatment, highlighting how dominant phyla including Proteobacteria, Bacteroidetes, Actinobacteria, and Firmicutes drive nitrogen transformations, phosphorus cycling, and organic matter degradation. The authors identify microplastic accumulation, antibiotic resistance gene spread, and greenhouse gas emissions as key challenges, and recommend engineered substrates, biochar amendments, and hybrid designs to improve future treatment performance.
A review of microplastics stress on nitrogen conversion and nitrous oxide emissions from biological wastewater treatment: Efficiency, mechanism and prospects
This review analyzes how microplastics affect nitrogen conversion processes and nitrous oxide emissions during biological wastewater treatment. Researchers found that microplastics can disrupt key nitrogen-cycling steps including nitrification and denitrification, potentially increasing emissions of the potent greenhouse gas nitrous oxide. The study highlights the dual environmental concern of microplastics interfering with both water treatment efficiency and climate-relevant gas emissions.