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61,005 resultsShowing papers similar to Ecological Functions of Microbes in Constructed Wetlands for Natural Water Purification
ClearA 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.
Investigating bio-remediation capabilities of a constructed wetland through spatial successional study of the sediment microbiome
Researchers studied bacteria from a constructed wetland — an engineered system that uses natural processes to clean wastewater — finding that bacteria near the wastewater inlet were more likely to be harmful pathogens, while those further away had beneficial properties like suppressing pathogens and reducing ammonia. However, the presence of antibiotic-resistant bacteria throughout the wetland raises concerns about its ability to fully neutralize drug-resistant microbes.
Constructed wetlands as neglected fixed source of microplastics and antibiotic resistance genes in natural water bodies?
This review examines constructed wetlands as potential sources of microplastics and antibiotic resistance genes (ARGs) released into natural water bodies, assessing their effectiveness at removing both types of pollutants. While constructed wetlands can reduce microplastics and ARGs through adsorption, filtration, and biodegradation, they may also act as reservoirs that release these contaminants under certain conditions.
Constructed wetlands for emerging pollutants removal: A decade of advances and future directions (2014–2024)
This review evaluates a decade of research on constructed wetlands, an eco-friendly water treatment approach, for removing emerging pollutants including antibiotics and microplastics. The evidence shows that constructed wetlands can effectively remove many types of pharmaceuticals and microplastics from water through a combination of physical filtration, microbial breakdown, and plant uptake. These low-cost, nature-based systems could help reduce human exposure to microplastics in treated water, though optimizing their design for different pollutant types remains a challenge.
Wastewater Treatment Using Constructed Wetland: Current Trends and Future Potential
This review covers constructed wetland technology for wastewater treatment, examining various wetland types, contaminant removal mechanisms, and recent innovations in microbiology that enhance pollutant degradation across municipal, agricultural, and industrial applications.
A review on the fate of micro and nano plastics (MNPs) and their implication in regulating nutrient cycling in constructed wetland systems
This review examines how micro- and nanoplastics interact with the biological, chemical, and physical processes in constructed wetlands, which are nature-based systems used to treat wastewater. Researchers found that these tiny plastics can interfere with nitrogen and phosphorus removal by affecting the microbial communities, plant health, and substrate chemistry within the wetlands. The study highlights that as microplastic levels increase in wastewater, their presence could reduce the overall treatment effectiveness of these green infrastructure systems.
Unveiling the microplastic perturbation on surface flow constructed wetlands with macrophytes of different life forms: Responses of nitrogen removal and sensory quality
Polystyrene microplastics initially boosted nitrogen removal in constructed wetlands used for water treatment, but over time they reduced removal efficiency by 25-34% and harmed the beneficial bacteria responsible for cleaning the water. This means microplastic contamination could undermine natural water treatment systems that communities rely on for clean water.
Effect of microplastics concentration and size on pollutants removal and antibiotic resistance genes (ARGs) generation in constructed wetlands: A metagenomics insight
Microplastics in constructed wetlands used for wastewater treatment reduced the removal of nitrogen, phosphorus, and antibiotics while promoting the spread of antibiotic resistance genes. This means microplastic contamination could undermine water treatment systems and contribute to the growing crisis of antibiotic-resistant bacteria, which poses a significant threat to public health.
Microplastic Identification in Domestic Wastewater-Treating Constructed Wetlands and Its Potential Usage in a Circular Economy
Researchers identified and characterized microplastics in constructed wetlands used for treating domestic wastewater, finding MP accumulation in the substrate and plants and assessing how well these nature-based treatment systems retain plastic particles before effluent is discharged.
Nitrogen metabolic responses of non-rhizosphere and rhizosphere microbial communities in constructed wetlands under nanoplastics disturbance
Researchers compared how microbial communities in plant root zones versus non-root zones of constructed wetlands respond to nanoplastic contamination. They found that nanoplastics reduced beneficial nitrogen-processing bacteria near roots by nearly 18%, while non-root microbes showed greater adaptability, even using nanoplastics as a carbon source. The findings suggest that constructed wetlands, which are important for water treatment, may have their nitrogen-removal capabilities impaired by nanoplastic pollution.
Role of Constructed Wetlands in Wastewater Treatment and Mitigation of Emerging Contaminants
This review examines how constructed wetlands can serve as sustainable, cost-effective systems for treating wastewater and removing emerging contaminants including nanoplastics, pharmaceuticals, and endocrine-disrupting chemicals. The authors describe how physical, chemical, and biological mechanisms work together in these engineered ecosystems to break down persistent pollutants. The study suggests that constructed wetlands offer a promising nature-based solution for addressing contaminants that conventional treatment methods struggle to remove.
Enhancing microplastic removal and nitrogen mitigation in constructed wetlands: An earthworm-centric perspective
Researchers added earthworms to constructed wetlands and found they significantly improved the removal of biodegradable microplastics and nitrogen pollutants from wastewater. The earthworms reshaped their gut microbial communities in ways that boosted both plastic degradation and nitrogen cycling, increasing microplastic removal by 13.5 percent. The findings suggest that incorporating earthworms into wetland treatment systems could offer a natural, low-cost approach to improving water quality.
Impact of microplastics on the treatment performance of constructed wetlands: Based on substrate characteristics and microbial activities
Researchers found that polystyrene microplastic accumulation in constructed wetlands initially improved nitrogen removal efficiency but ultimately impaired treatment performance over a 370-day experiment, altering substrate characteristics and microbial community activities.
Nanoplastics Disturb Nitrogen Removal in Constructed Wetlands: Responses of Microbes and Macrophytes
The impact of nanosized plastics on nitrogen removal in constructed wetlands was investigated by examining microbial community responses and denitrification processes. Nanoplastics disturbed biological nitrogen removal in the wetland system, with microorganisms showing altered community structure and reduced denitrification efficiency.
Combined environmental pressure induces unique assembly patterns of micro-plastisphere biofilm microbial communities in constructed wetlands
Researchers studied how biofilm communities form on microplastic surfaces within constructed wetlands used for wastewater treatment. They found that environmental stressors like antibiotics and organic matter created unique microbial communities on microplastics that differed from those on natural surfaces. The study suggests that constructed wetlands, while effective at trapping microplastics, may also foster distinct microbial ecosystems on plastic surfaces that warrant further investigation.
Critical role of benthic fauna in enhancing nanoplastics removal in constructed wetland: Performance, fate and mechanism
Researchers found that adding benthic fauna such as clams and worms to constructed wetlands significantly improved the removal of nanoplastics from wastewater. The organisms enhanced microbial activity and biofilm formation, which helped trap and break down the tiny plastic particles more effectively. The study suggests that incorporating natural organisms into wetland treatment systems could be a practical strategy for addressing nanoplastic pollution.
Biofilms in plastisphere from freshwater wetlands: Biofilm formation, bacterial community assembly, and biogeochemical cycles
Researchers studied how bacteria form biofilms on microplastic surfaces in freshwater wetlands and found that these plastic-associated communities differ significantly from natural soil bacteria. The microplastic biofilms had lower diversity but higher activity in carbon processing and nitrogen cycling genes. This means microplastics in wetlands can alter natural nutrient cycles, potentially affecting water quality in ecosystems that many communities rely on.
Microplastics removal mechanisms in constructed wetlands and their impacts on nutrient (nitrogen, phosphorus and carbon) removal: A critical review
This review examines how constructed wetlands can filter microplastics from water and what effect those trapped microplastics have on the wetlands' ability to remove nutrients. Researchers found that substrate type, plant species, and water flow patterns are key factors determining how well wetlands capture microplastics. The study also notes that accumulated microplastics can alter the microbial communities responsible for breaking down nitrogen, phosphorus, and carbon in these systems.
Greenhouse gas emissions and control measures for constructed wetland: A systematic review
This systematic review examines greenhouse gas emissions from constructed wetlands used for wastewater treatment, finding that CH4, CO2, and N2O fluxes vary widely by region and wetland configuration, and that emerging contaminants including microplastics influence emissions. The review proposes design and operational strategies to reduce the climate footprint of constructed wetlands while preserving their water treatment benefits.
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.
Polystyrene microplastics accumulation in lab-scale vertical flow constructed wetlands: impacts and fate
Researchers tested how polystyrene microplastics affect constructed wetlands, a nature-based system used to treat wastewater. They found that while the wetlands still removed most pollutants effectively, nitrogen removal decreased by up to 5% in the presence of microplastics, and the particles accumulated mainly in the upper layers of the wetland substrate. The study suggests that microplastics can alter the microbial communities responsible for breaking down nitrogen in these treatment systems.
From Laboratory Tests to the Ecoremedial System: The Importance of Microorganisms in the Recovery of PPCPs-Disturbed Ecosystems
This review examines how microorganisms can be used in constructed wetlands to remove pharmaceutical pollutants from wastewater. Since conventional treatment plants often fail to remove these emerging contaminants, biological remediation offers a promising and sustainable alternative.
Microplastics profile in constructed wetlands: Distribution, retention and implications
This study assessed microplastic distribution, retention, and implications within constructed wetlands used for wastewater treatment, finding that wetlands trap substantial quantities of MPs but that retention efficiency varies by plant species and wetland design. The results suggest constructed wetlands both remove and potentially accumulate MPs as a secondary pollution source.
Microbial community and antimicrobial resistance niche differentiation in a multistage, surface flow constructed wetland
Researchers tracked free-living and particle-attached bacteria through a constructed wetland wastewater treatment system, finding that free-floating bacteria carry over 60% of antibiotic-resistance genes out of the system even though particle-attached bacteria bring in most of the contamination. The findings suggest that free-living bacteria represent the primary escape route for dangerous drug-resistant microbes from constructed wetlands.