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

Biochar, Год журнала: 2025, Номер 7(1)

Опубликована: Янв. 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

Язык: Английский

---

Contribution of air-water interface in removing PFAS from drinking water: Adsorption, stability, interaction and machine learning studies

Water Research, Год журнала: 2023, Номер 236, С. 119947 - 119947

Опубликована: Апрель 7, 2023

Язык: Английский

---

Trace detection of perfluorooctanoic acid and perfluorooctane sulfonate in surface sediments using a liquid chromatograph coupled to an electrospray ionization single quadrupole mass spectrometer (LC-ESI–Q-MS)

Microchemical Journal, Год журнала: 2024, Номер 199, С. 109928 - 109928

Опубликована: Янв. 8, 2024

Poly- and perfluoroalkyl substances (PFAS) are among the pollutants of environmental concern besides pharmaceuticals personal care products, microplastics, other persistent organic pollutants. Of all different PFASs reportedly present in environment, most researched perfluorooctanoic acid (PFOA) perfluorooctane sulfonic (PFOS). In this study, these were detected using a precise, selective, sensitive liquid chromatographic-electrospray ionization single quadrupole mass spectrometric (LC-ESI–Q-MS) method within linear range 0.002–0.02 μg/mL. The developed was thereafter validated according to ICH validation parameters. This used monitor PFOA PFOS selected surface sediments collected environs two prominent rivers KwaZulu-Natal province South Africa: Umgeni Palmiet Rivers. While levels varied from not 1.490 ng/g dw, ranged 0.206 dw 0.426 total concentration (∑ ∑ PFOS) sediment samples 7.50 2.79 respectively. percent positive occurrence tested 81.8 % 100 %, study becomes an eye opener commencement research works with respect developing remediation strategies for removal PFAS especially African environment.

Язык: Английский

---

The Ins and Outs of Per- and Polyfluoroalkyl Substances in the Great Lakes: The Role of Atmospheric Deposition

Environmental Science & Technology, Год журнала: 2024, Номер 58(21), С. 9303 - 9313

Опубликована: Май 16, 2024

As part of the Integrated Atmospheric Deposition Network, precipitation (n = 207) and air 60) from five sites water samples 87) all Great Lakes were collected in 2021–2023 analyzed for 41 per- polyfluoroalkyl substances (PFAS). These measurements combined with other available data to estimate mass budget four representative compounds, PFBA, PFBS, PFOS, PFOA basin. The median Σ41PFAS concentrations across ranged between 2.4 4.5 ng/L. concentration lake was highest Lake Ontario (11 ng/L) lowest Superior (1.3 ng/L). Cleveland at 410 pg/m3 Sleeping Bear Dunes 146 pg/m3. net transfer flows generally negative Superior, Michigan, Huron positive Erie Ontario, indicating that three most northern lakes are accumulating PFAS two eliminating PFAS. deposition is an important source PFAS, particularly Superior.

Язык: Английский

---

Ecological risks of PFAS in China’s surface water: A machine learning approach

Environment International, Год журнала: 2025, Номер 196, С. 109290 - 109290

Опубликована: Янв. 16, 2025

Язык: Английский

---

Metagenomic analysis of antibiotic-resistance genes and viruses released from glaciers into downstream habitats

The Science of The Total Environment, Год журнала: 2023, Номер 908, С. 168310 - 168310

Опубликована: Ноя. 8, 2023

Язык: Английский

---

Investigation and comparative analysis of ecological risk for heavy metals in sediment and surface water in east coast estuaries of India

Marine Pollution Bulletin, Год журнала: 2023, Номер 190, С. 114894 - 114894

Опубликована: Апрель 3, 2023

Язык: Английский

---

Environmental occurrence, bioaccumulation and human risks of emerging fluoroalkylether substances: Insight into security of alternatives

The Science of The Total Environment, Год журнала: 2024, Номер 922, С. 171151 - 171151

Опубликована: Фев. 22, 2024

Язык: Английский

---

Occurrence, source apportionment, and ecological risk of legacy and emerging per- and poly-fluoroalkyl substances (PFASs) in the Dahei river basin of a typical arid region in China

Environmental Research, Год журнала: 2024, Номер 246, С. 118111 - 118111

Опубликована: Янв. 4, 2024

Язык: Английский

---

Exploring per- and polyfluoroalkyl substance distribution in Arctic wastewater treatment lagoons and natural wetlands: First record in Nunavik, Canada

Chemosphere, Год журнала: 2025, Номер 374, С. 144186 - 144186

Опубликована: Фев. 16, 2025

Per- and polyfluoroalkyl substances (PFAS), as emerging bioaccumulative contaminants, are widely present in water wastewater systems. Municipal effluents serve pathways for PFAS to enter aquatic environments. This study monitors the treatment lagoons, nearby wetlands bay a Canadian Arctic community. Eight out of 40 targeted were detected samples collected from raw wastewater, natural wetlands, Ungava bay. The total concentrations ranges 45.9-56.1 ng/L 36.6-70.8 measured at 7.3 most prevalent frequently 6:2 FTS, PFHxA, PFNA. At all sites, short-chain surpassed long-chain PFAS. Short-chain peaked 267.01 (79.74%), while totaled 67.83 (20.26%). estimated yearly mass flow rate into environment through lagoon effluent was 2.33 g/year. conducted environmental risk assessment both lagoons three downstream suggests that risks associated with under posed minimal ecological risk, though long-term evaluation is needed. In conclusion, findings this research provide further information on pollution regions may, such, guide development comprehensive regulations safeguard human health environment, thereby mitigating potential future risks.

Язык: Английский

---