Comparison of eco-improvement on constructed wetlands with nano zero valent iron introduction under different levels of PFOA stress: Perspectives on plant, microbe, and PFOA removal

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 891, P. 164052 - 164052

Published: May 29, 2023

Language: Английский

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Effects of micro/nanoplastics on microorganisms and plants in constructed wetlands during the nitrogen removal process: A review

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153778 - 153778

Published: July 6, 2024

Language: Английский

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Constructed wetlands as nature-based solutions in managing per-and poly-fluoroalkyl substances (PFAS): Evidence, mechanisms, and modelling

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 934, P. 173237 - 173237

Published: May 17, 2024

Per- and poly-fluoroalkyl substances (PFAS) have emerged as newly regulated micropollutants, characterised by extreme recalcitrance environmental toxicity. Constructed wetlands (CWs), a nature-based solution, gained widespread application in sustainable water wastewater treatment offer multiple societal benefits. Despite CWs potential, knowledge gaps persist their PFAS removal capacities, associated mechanisms, modelling of fate. This study carried out systematic literature review, supplemented unpublished experimental data, demonstrating the promise for from influents varying sources characteristics. Median performances 64, 46, 0 % were observed five free surface (FWS), four horizontal subsurface flow (HF), 18 vertical (VF) wetlands, respectively. adsorption substrate or plant root/rhizosphere was deemed key mechanism. Nevertheless, available dataset resulted unsuitable quantitative analysis. Data-driven models, including regression models machine learning-based Artificial Neural Networks (ANN), employed to predict removal. These showed better predictive performance compared various mechanistic which include two isotherms. The results affirmed that artificial intelligence is an efficient tool emerging contaminants with limited chemical properties. In summary, this consolidated evidence supporting use mitigating new legacy contaminants. Further research, especially long-term monitoring full-scale treating real wastewater, crucial obtain additional data model development validation.

Language: Английский

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Bacterial degradation of perfluoroalkyl acids

Current Opinion in Biotechnology, Journal Year: 2024, Volume and Issue: 88, P. 103170 - 103170

Published: July 16, 2024

Advances in biological degradation of per- and polyfluoroalkyl substances (PFAS) have shown that bioremediation is a promising method PFAS mineralization; however, most these studies focus on remediation more reactive polyfluorinated compounds. This review focuses the defluorination recalcitrant perfluorinated alkyl acids (PFAAs) by bacteria. We highlight key report PFAA products, specific bacteria, relevant genes. Among studies, we discuss trends anaerobic versus aerobic conditions with bacterial species or consortia. holistic seeks to elucidate state biodegradation research need for future environmental application.

Language: Английский

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Evolutionary obstacles and not C–F bond strength make PFAS persistent

Microbial Biotechnology, Journal Year: 2024, Volume and Issue: 17(4)

Published: April 1, 2024

The fate of organic matter in the environment, including anthropogenic chemicals, is largely predicated on enzymatic capabilities microorganisms. Microbes readily degrade, and thus recycle, most ~100,000 commercial chemicals used modern society. Per- polyfluorinated compounds (PFAS) are different. Many research papers posit that general resistance PFAS to microbial degradation based chemistry argument relates strength C-F bond. Here, I advance opinion low biodegradability best formulated as a biological optimization problem, hence evolution. framing problem important. If it framed around bond strength, major effort should focus finding engineering new cleaving enzymes. alternative, preferred approach suggested here, directed evolution systems containing known systems. There now reports bacteria degrading and/or growing multiply fluorinated arenes, alkenoic alkanoic acids. impediment more efficient widespread biodegradation these biological, not chemical. rationale for this made five sections below follow Introduction.

Language: Английский

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Removal of Contaminants in Stormwater via Subsurface-Flow Wetlands: A Review with Focus on Nutrients, Heavy Metals, and PFAS

Journal of Environmental Engineering, Journal Year: 2024, Volume and Issue: 150(3)

Published: Jan. 9, 2024

Subsurface-flow constructed wetlands (SSF CWs), which include horizontal subsurface–flow (HSSF CWs) and vertical (VSSF have become increasingly popular for the treatment of various waste streams such as wastewater, landfill leachate, stormwater runoff. These utilize a variety natural physical, chemical, microbial processes to effectively remove contaminants. This article aims provide valuable insights into application subsurface-flow runoff by collecting reviewing relevant articles. Within realm contaminants, this review primarily focuses on nutrients, heavy metal, per- polyfluoroalkyl substances (PFAS), are commonly found in worldwide. The removal percentages these contaminants vary across different studies, depending factors characteristics type scale wetland, well selection plants substrates used. study provides that significantly contribute including adsorption, plant uptake, biodegradation. percentage PFAS ranges from 1% 99% wetlands. wide range comes differences between category, soil type, wetland configuration, matrix effects. Additionally, paper brings attention current gaps limitations present research conducted within field. It is imperative conduct further studies utilizing real-world or synthetic deepen our comprehension domain. Furthermore, considering each category possesses unique properties, conducting individual group becomes crucial attain comprehensive understanding behavior transformation CWs.

Language: Английский

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Innovative application of basalt fibers as biological carrier in constructed wetland-microbial fuel cell for improvement of performance under perfluorooctanoic acid exposure

Bioresource Technology, Journal Year: 2024, Volume and Issue: 406, P. 131019 - 131019

Published: June 20, 2024

Language: Английский

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Stimulation on microbial nitrogen metabolism by iron under PFAS exposure drives effective nitrogen removal in constructed wetland

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 53, P. 103879 - 103879

Published: June 7, 2023

Language: Английский

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Modified basalt fiber filled in constructed wetland-microbial fuel cell: Comparison of performance and microbial impacts under PFASs exposure

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135179 - 135179

Published: July 13, 2024

Language: Английский

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Interactions between biofilms and PFASs in aquatic ecosystems: Literature exploration

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 906, P. 167469 - 167469

Published: Sept. 29, 2023

Language: Английский

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