4.7 Article

Kinetic model of PFAS removal by semi-batch foam fractionation and validation by experimental data for K-PFOS

Related references

Note: Only part of the references are listed.
Article Engineering, Chemical

Effect of mono- and di-valent cations on PFAS removal from water using foam fractionation - A modelling and experimental study

Thomas Buckley et al.

Summary: Per- and poly-fluoroalkyl substances (PFAS) are difficult to degrade compounds widely used in consumer products. Foam fractionation is a potential remediation technology for PFAS contaminated water. This study evaluated the effect of co-foaming agents and salts on the performance of foam fractionation, showing that higher charge density of cations leads to better separation of PFAS.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

Article Engineering, Environmental

Commercial-scale remediation of per- and polyfluoroalkyl substances from a landfill leachate catchment using Surface-Active Foam Fractionation (SAFF®)

David J. Burns et al.

Summary: This article presents the results of a commercial-scale field trial conducted at the Telge Recycling plant in Sweden, demonstrating the successful removal of PFAS substances using the Surface-Active Foam Fractionation (SAFF) process. The study shows that SAFF is effective in removing PFOS, PFOA, and PFHxS from landfill leachate without the need for complex pretreatment, achieving high removal percentages.

REMEDIATION-THE JOURNAL OF ENVIRONMENTAL CLEANUP COSTS TECHNOLOGIES & TECHNIQUES (2022)

Article Environmental Sciences

Pilot-Scale Continuous Foam Fractionation for the Removal of Per- and Polyfluoroalkyl Substances (PFAS) from Landfill Leachate

Sanne J. Smith et al.

Summary: The present study investigated the applicability of a pilot-scale foam fractionation setup for the removal of per- and polyfluoroalkyl substances (PFAS) from landfill leachate. The results showed that continuous foam fractionation is a highly applicable treatment technology for PFAS contaminated water, with high removal efficiency for certain long-chain PFAS and lower removal efficiency for certain short-chain PFAS.

ACS ES&T WATER (2022)

Article Engineering, Environmental

PFAS removal from groundwaters using Surface-Active Foam Fractionation

David J. Burns et al.

Summary: Results from a field trial commissioned by the Australian Department of Defence at the Army Aviation Centre Oakey show that the SAFF process is highly effective in removing PFAS contaminants in groundwater, exceeding the prescribed water quality standards. The study also demonstrated the environmental sustainability of the SAFF process and its ability to extend the lifespan of other cleaning devices by reducing PFAS loading.

REMEDIATION-THE JOURNAL OF ENVIRONMENTAL CLEANUP COSTS TECHNOLOGIES & TECHNIQUES (2021)

Article Environmental Sciences

Unification of surface tension isotherms of PFOA or GenX salts in electrolyte solutions by mean ionic activity

Jianlong Wang et al.

Summary: The study showed that using mean ionic activity a* instead of concentration provides a unified surface tension isotherm independent of electrolyte concentration for PFAS salts. This suggests that the electrolyte dependence of the isotherm is solely due to its effect on PFAS activity, rather than an intrinsic surface property, which has important implications for PFAS retention and extraction.

CHEMOSPHERE (2021)

Article Environmental Sciences

Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants

Yueh-Feng Li et al.

Summary: Foam flotation process aided by cationic surfactants proved to be an efficient method for separating and recovering PFOA, with surfactants having alkyl chains similar in length to PFOA showing higher affinities. OTAB was able to completely remove PFOA in 20 minutes in actual wastewater, indicating the potential of this method for industrial applications.

CHEMOSPHERE (2021)

Review Environmental Sciences

A critical review of modeling Poly- and Perfluoroalkyl Substances (PFAS) in the soil-water environment

Matthew W. Sima et al.

Summary: This review summarizes recent developments in PFAS modeling for various chemical, physical, and biological processes, including sorption, volatilization, degradation, bioaccumulation, and transport. It is found that PFAS transport in the soil-water environment is influenced by various physical, chemical, and biological processes, highlighting the importance of accurate model parameters to predict the fate and remediation efficiency of PFAS.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Engineering, Environmental

Accumulation of PFOA and PFOS at the Air-Water Interface

Jed Costanza et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS (2019)

Article Engineering, Chemical

Recovery of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) from dilute water solution by foam flotation

Yu-Chi Lee et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2017)

Article Chemistry, Physical

The science of foaming

Wiebke Drenckhan et al.

ADVANCES IN COLLOID AND INTERFACE SCIENCE (2015)

Article Engineering, Environmental

Polyfluorinated Compounds: Past, Present, and Future

Andrew B. Lindstrom et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2011)

Article Chemistry, Analytical

Partitioning and removal of perfluorooctanoate during rain events: the importance of physical-chemical properties

Catherine A. Barton et al.

JOURNAL OF ENVIRONMENTAL MONITORING (2007)

Article Engineering, Chemical

Determination of the liquid pool surfactant and protein concentration for semi-batch foam fractionation columns

P. T. V. Rosa et al.

BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING (2007)

Article Chemistry, Physical

Adsorption of single and mixed ionic surfactants at fluid interfaces

VB Fainerman et al.

ADVANCES IN COLLOID AND INTERFACE SCIENCE (2002)

Article Biochemistry & Molecular Biology

Modeling a protein foam fractionation process

LP Du et al.

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY (2000)

Article Engineering, Chemical

Gas dispersion properties: Bubble surface area flux and gas holdup

JA Finch et al.

MINERALS ENGINEERING (2000)