Degradation of Low‐Concentration Perfluoroalkyl Substances With a Nonthermal Gas–Liquid Plasma Reactor DOI

Lauren Rene Jenks,

Radha Krishna Murthy Bulusu,

Rachel Gallan

и другие.

Plasma Processes and Polymers, Год журнала: 2024, Номер unknown

Опубликована: Дек. 22, 2024

ABSTRACT A continuous gas–liquid flowing film reactor with nanosecond pulsed power, where plasma channels generated in argon propagate along the interface, was utilized to degrade aqueous solutions of perfluoroalkyl substances (PFAS). Perfluorooctanoic acid (PFOA) yielded maximum percentage degradations 81.6% and 76.5% for low (98 ± 29 ppt) high (300 30 concentrations, respectively, at 2 mL/min liquid flow a pulse repetition frequency 0.5 kHz. mixture perfluorocarboxylic acids (PFCAs) perfluoroalkane sulfonic (PFSAs) also degraded. Sequential multi‐pass treatments PFOA an initial concentration 413 142 ppt using kHz resulted 84.3% degradation first pass no detected after additional passes.

Язык: Английский

Continuous and selective recovery of fluorobenzene from complex water emulsion by superhydrophobic wood mimetic cryogel DOI
Xinqi Wang, Jiani Xu, Xiaoli Huang

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159710 - 159710

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Per- and polyfluoroalkyl substances in environment and potential health impacts: Sources, remediation treatment and management, policy guidelines, destructive technologies, and techno-economic analysis DOI
Priyanka Chambial, Neelam Thakur,

Jyoti Kushawaha

и другие.

The Science of The Total Environment, Год журнала: 2025, Номер 969, С. 178803 - 178803

Опубликована: Фев. 27, 2025

Язык: Английский

Процитировано

0

Plasma-Generated Free Electrons Induced Perfluorooctanoic Acid Efficient Degradation at the Gas–Liquid Interface DOI

Chengye Song,

Yan Zhao, Zonghao Liu

и другие.

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Low-temperature plasma, generating both reductive electrons and diverse oxidative species, has demonstrated considerable potential for the degradation of perfluorooctanoic acid (PFOA). However, limited understanding electron propagation mechanisms during discharge led previous research to focus on hydrated (eaq-) while neglecting free (e-). In this study, a consistent modeled dielectric barrier (DBD) plasma was employed degrade PFOA. Contribution analysis indicated that reactions driven by e- were dominant, with substantial contributions from hydroxyl radical (•OH)-mediated oxidation. By integrating kinetic model streamer solver, basic unit developed. Simulation identified high-intensity response electric field formed memory effect, peak strength 1.816 × 106 V/m. This facilitated secondary acceleration e-, allowing penetrate surface water layer directly attack PFOA via chain-shortening mechanisms. The delocalized state restricted primarily gas-liquid interface, minimizing interference surrounding medium. study highlights previously overlooked role provides essential theoretical insights plasma-based treatment PFOA-contaminated water.

Язык: Английский

Процитировано

0

Leading Techniques for Per- and Polyfluoroalkyl Substances (PFASs) Remediating in Water and Wastewater DOI Open Access
Zhenzhen Chen, Yaqian Zhao, Ting Wei

и другие.

Water, Год журнала: 2025, Номер 17(9), С. 1319 - 1319

Опубликована: Апрель 28, 2025

Per- and polyfluoroalkyl substances (PFASs), a class of synthetic organic compounds since the 1940s, have become widespread persistent environmental pollutants. Due to their high chemical stability, bioaccumulation potential, extensive industrial household applications, PFASs drawn significant attention from researchers worldwide in recent years, while hot topic, publications are updated very quickly. Various remediation technologies, including adsorption, pyrolysis, biodegradation, advanced oxidation, been developed treated as leading techniques mitigate PFAS contamination. Other alternative foam fractionation, constructed wetland, piezoelectric ball milling. However, effectiveness these methods varies depending on reaction mechanisms, operational conditions, factors. This review provides comprehensive summary latest advancements removal strategies, highlighting advantages, limitations, potential synergies. Furthermore, future research directions technological developments discussed explore more efficient, sustainable, cost-effective solutions for remediation.

Язык: Английский

Процитировано

0

Current Challenges and Prospects in Superamphiphobic Surfaces Technology DOI

Wanshun Deng,

Rui Guo, Shuaijun Pan

и другие.

Опубликована: Апрель 28, 2025

Язык: Английский

Процитировано

0

Degradation of Low‐Concentration Perfluoroalkyl Substances With a Nonthermal Gas–Liquid Plasma Reactor DOI

Lauren Rene Jenks,

Radha Krishna Murthy Bulusu,

Rachel Gallan

и другие.

Plasma Processes and Polymers, Год журнала: 2024, Номер unknown

Опубликована: Дек. 22, 2024

ABSTRACT A continuous gas–liquid flowing film reactor with nanosecond pulsed power, where plasma channels generated in argon propagate along the interface, was utilized to degrade aqueous solutions of perfluoroalkyl substances (PFAS). Perfluorooctanoic acid (PFOA) yielded maximum percentage degradations 81.6% and 76.5% for low (98 ± 29 ppt) high (300 30 concentrations, respectively, at 2 mL/min liquid flow a pulse repetition frequency 0.5 kHz. mixture perfluorocarboxylic acids (PFCAs) perfluoroalkane sulfonic (PFSAs) also degraded. Sequential multi‐pass treatments PFOA an initial concentration 413 142 ppt using kHz resulted 84.3% degradation first pass no detected after additional passes.

Язык: Английский

Процитировано

2