Removal of bisphenol a from wastewater by adsorption and membrane separation: Performances and mechanisms

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149414 - 149414

Published: Feb. 9, 2024

Language: Английский

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Transition metals-doped g-C3N4 nanostructures as advanced photocatalysts for energy and environmental applications

Chemosphere, Journal Year: 2024, Volume and Issue: 352, P. 141354 - 141354

Published: Feb. 2, 2024

Language: Английский

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Progress and perspectives on carbon-based materials for adsorptive removal and photocatalytic degradation of perfluoroalkyl and polyfluoroalkyl substances (PFAS)

Chemosphere, Journal Year: 2024, Volume and Issue: 351, P. 141164 - 141164

Published: Jan. 10, 2024

Language: Английский

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Treatment of aqueous per- and poly-fluoroalkyl substances: A review of biochar adsorbent preparation methods

Chemosphere, Journal Year: 2024, Volume and Issue: 357, P. 142088 - 142088

Published: April 20, 2024

Per- and poly-fluoroalkyl substances (PFAS) are synthetic chemicals widely used in everyday products, causing elevated concentrations drinking water posing a global challenge. While adsorption methods commonly employed for PFAS removal, the substantial cost environmental footprint of commercial adsorbents highlight need more cost-effective alternatives. Additionally, existing exhibit limited effectiveness, particularly against diverse types, such as short-chain PFAS, necessitating modifications to enhance capacity. Biochar can be considered eco-friendly alternative conventional adsorbents. With abundant feedstocks favorable physicochemical properties, biochar shows significant potential applied an adsorbent removing contaminants from water. Despite its effectiveness adsorbing different inorganic organic environments, some factors restrict effective application adsorption. These related characteristics well chemistry. Therefore, have been introduced overcome these limitations improve biochar's This review explores preparation conditions, including pyrolysis process, activation, modification techniques capacity types PFAS. It addresses critical questions about performance composites, mechanisms governing adsorption, challenges, future perspectives this field. The surge research on indicates growing interest, making timely valuable resource in-depth exploration remediation.

Language: Английский

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Environmental behavior of per- and polyfluoroalkyl substances (PFASs) and the potential role of biochar for its remediation: a review

Biochar, Journal Year: 2025, Volume and Issue: 7(1)

Published: Jan. 17, 2025

Abstract Per- and polyfluoroalkyl substances (PFASs), commonly known as ‘‘forever chemicals’’, are persistent organic pollutants that widely distributed in the environment. Due to their toxicity resistance degradation, PFASs classified emerging contaminants, increasing attention is being paid remediation. Biochar, an environmentally friendly cost-effective adsorbent, shows potential for remediating contamination. The application of biochar remediation has garnered growing interest. Compared other adsorbents, more economical raw materials its preparation readily available. However, there currently no comprehensive review summarizing effects on environmental behavior PFASs. This aims fill gap by providing in-depth discussion synthesis existing literature this area. It focuses PFASs, specifically addressing adsorption mechanisms factors influencing effectiveness A proposed mechanism which photodegrades through generation free radicals, addition conventional (such pore filling, hydrogen bonding, hydrophobic interactions, electrostatic interactions), explored. Furthermore, discusses ability reduce likelihood entering food chain water soil evaluates feasibility limitations using removal. Finally, we identify future research directions support safe effective use remediation, so promote advancement green technologies. Graphic

Language: Английский

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Role of in situ surfactant modification of lignin structure and surface properties during glycerol pretreatment in modulating cellulase-lignin binding affinities

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 687, P. 786 - 800

Published: Feb. 17, 2025

Language: Английский

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A Critical Review on PFAS Removal from Water: Removal Mechanism and Future Challenges

Sustainability, Journal Year: 2023, Volume and Issue: 15(23), P. 16173 - 16173

Published: Nov. 21, 2023

Per and polyfluoroalkyl substances (PFAS) have been extensively employed in a broad range of manufacturing consumer goods due to their highly persistent nature. PFAS exposure is recognized pose serious health hazards; therefore, addressing pollution water has become top priority for public environmental protection organizations. This review article focuses on the efficiency different removal techniques (activated carbon, biochar, ion exchange resin, membrane filtration, reverse osmosis, metal-organic frameworks, foam fractionation, ozone destruction techniques) eliminating types short- long-chain from water. Hydrophobicity electrostatic interactions are revealed be primary mechanisms elimination PFAS. The all eradicate short-chain comparatively lower compared most efficient but some drawbacks, including formation precursors high operational costs. According findings study, it anticipated that combined methods will required effectively remediate PFAS-contaminated

Language: Английский

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Understanding the Selective Removal of Perfluoroalkyl and Polyfluoroalkyl Substances via Fluorine–Fluorine Interactions: A Critical Review

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

As regulatory standards for per- and polyfluoroalkyl substances (PFAS) become increasingly stringent, innovative water treatment technologies are urgently demanded effective PFAS removal. Reported sorbents often exhibit limited affinity frequently hindered by competitive background substances. Recently, fluorinated (abbreviated as fluorosorbents) have emerged a potent solution leveraging fluorine-fluorine (F···F) interactions to enhance selectivity efficiency in This review delves into the designs applications of fluorosorbents, emphasizing how F···F improve binding affinity. Specifically, existence results removal efficiencies orders magnitude higher than other counterpart sorbents, particularly under conditions. Furthermore, we provide detailed analysis fundamental principles underlying elucidate their synergistic effects with sorption forces, which contribute enhanced efficacy selectivity. Subsequently, examine various fluorosorbents synthesis fluorination techniques, underscore importance accurately characterizing through advanced analytical methods, emphasize significance this interaction developing selective sorbents. Finally, discuss challenges opportunities associated employing techniques guide design advocate further research development sustainable cost-effective interactions.

Language: Английский

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Harnessing Sustainable Biochar-based Composites for Effective PFAS Removal from Wastewater

Current Opinion in Environmental Science & Health, Journal Year: 2025, Volume and Issue: unknown, P. 100594 - 100594

Published: Jan. 1, 2025

Language: Английский

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Adsorption of perfluorooctanoic acid from aqueous matrices onto chitosan-modified magnetic biochar: Response surface methodology-based modeling, performance, and mechanism

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 125734 - 125734

Published: Jan. 1, 2025

Language: Английский

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