Per-and polyfluoroalkyl substances (PFAS) as a health hazard: Current state of knowledge and strategies in environmental settings across Asia and future perspectives

Singh, Karuna; Kumar, Naresh; Yadav, Asheesh Kumar; Singh, Rahul; Kumar, Kapil

doi:10.1016/j.cej.2023.145064

Cited by 20 publications

(5 citation statements)

References 304 publications

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“…PFAS have infiltrated Southeast Asia’s air, water, soil, and living organisms, raising concerns about their impact on ecosystems and human health. Recently, several studies and reviews have been published on the occurrence of PFAS in Southeast Asian environments ( Baluyot et al, 2021 ; Singh et al, 2023 ; Tang et al, 2023 ). Moreover, PFAS-containing aqueous film-forming foams used in emergencies have been released into aquatic environments.…”

Section: Emerging Contaminants In the Southeast Asian Environmentmentioning

confidence: 99%

Southeast Asia’s environmental challenges: emergence of new contaminants and advancements in testing methods

Bhagat,

Singh,

Shimada

2024

Front. Toxicol.

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Emerging contaminants, including pharmaceuticals, personal care products, microplastics, and per- and poly-fluoroalkyl substances, pose a major threat to both ecosystems and human health in Southeast Asia. As this region undergoes rapid industrialization and urbanization, the increasing presence of unconventional pollutants in water bodies, soil, and various organisms has become an alarming concern. This review comprehensively examines the environmental challenges posed by emerging contaminants in Southeast Asia and recent progress in toxicity testing methods. We discuss the diverse range of emerging contaminants found in Southeast Asia, shedding light on their causes and effects on ecosystems, and emphasize the need for robust toxicological testing methods. This review is a valuable resource for researchers, policymakers, and environmental practitioners working to mitigate the impacts of emerging contaminants and secure a sustainable future for Southeast Asia.

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Section: Emerging Contaminants In the Southeast Asian Environmentmentioning

confidence: 99%

Southeast Asia’s environmental challenges: emergence of new contaminants and advancements in testing methods

Bhagat,

Singh,

Shimada

2024

Front. Toxicol.

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“…Approximately 2100 of these sites exhibit pollution levels considered hazardous to human health, with peaks ranging from 20 to 75 mg L À1 , [21] which is ≈10 5 times the established legal limit. [21] However, knowledge of PFAS pollution worldwide is still limited, and the contaminated sites identified are mainly in Europe [21] and in the United States, [22] although data availability is also increasing in Asia, [23] while the community believes that PFAS pollution spans the entire globe. [24] Numerous countries are now addressing this global problem.…”

Section: New Regulation and Restriction To Pfas Manufacturing And Usesmentioning

confidence: 99%

Exploring Solar Energy Solutions for Per‐ and Polyfluoroalkyl Substances Degradation: Advancements and Future Directions in Photocatalytic Processes

Bertucci,

Lova

2024

Solar RRL

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Concerns about per‐ and polyfluoroalkyl substances (PFAS) pollution are escalating globally due to the discovery of their widespread environmental distribution, accompanied by their migration, bioaccumulation, and toxic potential for plants, animals, and humans. Several technologies have been developed for their remediation since standard water treatment methods often fail. However, these approaches require large energy consumption and, at times, exacerbate environmental issues. In this context, photocatalytic degradation holds promise as a reliable technological solution for PFAS mineralization. However, to date, it primarily relies on the degradation of perfluorooctanoic acid using high energy gap semiconductor oxides that necessitate high‐power artificial ultraviolet sources for excitation and, at times, the use of strong chemical oxidants. This review examines chemical‐free catalysts and mechanisms recently documented in the literature to outline a roadmap for the realization of solar‐driven mineralization of all PFAS compounds. To this end, we delve into conventional wide bandgap semiconductor oxide and explore strategies to extend their spectral absorbance while enhancing charge separation with a focus on the proposed degradation pathways, that are fundamental to designing technologically relevant photodegradation systems.This article is protected by copyright. All rights reserved.

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“…Therefore, these materials are extensively applied in industry and serve as water and oil repellents for textiles, paper, and leather because of their weatherability and unique physicochemical properties. Unfortunately, the application of fluorinated polymers with long fluoroalkyl side chains can result in the release of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS), which pose threats to the environment through their bioaccumulative potential in living organisms, long-distance migration, and biomagnification potential in food webs. − Considering the related health and safety risks, a series of regulatory actions are taken requiring the banned use of long fluoroalkyl side chain polymers. Therefore, developing environmentally friendly and nontoxic alternative low-surface-energy agents to replace traditional perfluoroalkyl polymers associated with PFOA or PFOS is extremely imperative, especially in the field of textile industry, which is a major contributor to the global use of per- and poly fluoroalkyl substances…”

Section: Introductionmentioning

confidence: 99%

Crystalline Alkyl Side Chain Enhanced Hydrophobicity–Oleophobicity for Transparent and Durable Low-Surface-Energy Coatings Based on Short Fluorinated Copolymers

Tan,

Wang,

Sun

et al. 2024

Macromolecules

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Liquid-repellent surfaces anchored with long perfluorinated polymers can attain the desired stable hydrophobicity−oleophobicity but are phased out due to safety and health concerns. Short perfluorinated polymers with low toxicity are ideal substitutes for repellent coatings but are limited by the easily rearranged short fluoroalkyl pendent groups. Here, long hydrocarbons with different side chain lengths are introduced, and a satisfactory low-surface-tension short fluorinated terpolymer with hydrophobicity−oleophobicity (water contact angle of 110°, oil contact angle of 94°) and low contact angle hysteresis (Δθ ∼22°) is synthesized, which is comparable to the liquid repellency of long perfluorinated substances. The enhanced antiwetting performance is attributed to the smectic B packing structure formed by the long hydrocarbon side chains of the copolymer, which inhibits the surface reconstruction of short fluoroalkyl pendent groups. Furthermore, this short fluorinated copolymer is suitable for preparing transparent and durable hydrophobic coatings that can render various substrates with good liquid repellency. The coated fabric displays strong resistance to cyclic washing, abrasion, tape peeling, chemical corrosion, high-temperature treatment, and UV irradiation while maintaining its antiwetting property, presenting good mechanical robustness and high weather resistance. This work provides a feasible and sustainable design strategy for developing an eco-friendly robust liquid-repellent material.

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Per-and polyfluoroalkyl substances (PFAS) as a health hazard: Current state of knowledge and strategies in environmental settings across Asia and future perspectives

Cited by 20 publications

References 304 publications

Southeast Asia’s environmental challenges: emergence of new contaminants and advancements in testing methods

Southeast Asia’s environmental challenges: emergence of new contaminants and advancements in testing methods

Exploring Solar Energy Solutions for Per‐ and Polyfluoroalkyl Substances Degradation: Advancements and Future Directions in Photocatalytic Processes

Crystalline Alkyl Side Chain Enhanced Hydrophobicity–Oleophobicity for Transparent and Durable Low-Surface-Energy Coatings Based on Short Fluorinated Copolymers

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