Biodegradation of perfluorooctanesulfonate (PFOS) as an emerging contaminant

Kwon, Bum Gun; Lim, Hyuncheul; Na, Suk-Hyun; Choi, Bong-In; Shin, Dong‐Soo; Chung, Seon-Yong

doi:10.1016/j.chemosphere.2014.01.072

Cited by 156 publications

(72 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to most monitoring studies, PFCAs and PFSAs seem not to be consistently removed during secondary biological treatment (Arvaniti and Stasinakis, 2015). The predominant high energy carbon-fluorine bond makes these compounds inherently recalcitrant to biodegradation treatments (Kwon et al, 2014).…”

Section: Effect Of Mbr Treatment On Pfassmentioning

confidence: 99%

Perfluorinated alkyl substances (PFASs) in northern Spain municipal solid waste landfill leachates

et al. 2017

View full text Add to dashboard Cite

Landfill leachates have been recognized as significant secondary sources of poly- and perfluoroalkyl substances (PFASs). This study presents data on the occurrence and concentration of 11 perfluoroalkyl carboxylates (PFCAs) and 5 perfluoroalkyl sulfonates (PFSAs) in leachates from 4 municipal solid waste landfill sites located across northern Spain. To the best of our knowledge, this is the first report of the presence of PFASs in Spanish landfill leachates. Two of the landfill sites applied on-site treatment using membrane bioreactors (MBR), and its effect on PFASs occurrence is also reported. Total PFASs (∑PFASs) in raw leachates reached 1378.9 ng/L, while in treated samples ∑PFASs was approximately two-fold (3162.3 ng/L). PFCAs accounted for the majority of the detected PFASs and perfluorooctanoic acid (PFOA) was the dominant compound in raw leachates (42.6%), followed by shorter chain PFHxA (30.1%), PFPeA and PFBA. The age of the sites might explain the PFASs pattern found in raw leachates as all of them were stabilized leachates. However, PFASs profile was different in treated samples where the most abundant compound was PFHxA (26.5%), followed by linear perfluorobutane sulfonate (L-PFBS) (18.7%) and PFOA (17.7%). The overall increase of the PFASs content as well as the change in the PFASs profile after the MBR treatment, could be explained by the possible degradation of PFASs precursors such as fluorotelomer alcohols or fluorotelomer sulfonates. Using the volume of leachates generated in the landfill sites, that served 1.8 million people, the discharge of 16 ∑PFASs contained in the landfill leachates was estimated as 1209 g/year.

show abstract

Section: Effect Of Mbr Treatment On Pfassmentioning

confidence: 99%

Perfluorinated alkyl substances (PFASs) in northern Spain municipal solid waste landfill leachates

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In recent years, several traditional solutions including coagulation, 7 biological degradation, 8 and novel technologies such as photocatalysis, 3 ball milling 9 and sonolysis 10 have been proposed to remove PFOS and/or PFOA. While their inherent weaknesses such as specic equipment, high energy consumption and inefficiency are still big challenges.…”

Section: Introductionmentioning

confidence: 99%

Sorption of perfluorooctane sulfonate and perfluorooctanoate on polyacrylonitrile fiber-derived activated carbon fibers: in comparison with activated carbon

et al. 2017

View full text Add to dashboard Cite

Polyacrylonitrile fiber (PANF)-derived activated carbon fibers (PACFs) were successfully prepared using a one step carbonation-activation, and were used for the sorption of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA). High specific surface areas (SSAs) of 1782 m 2 g À1 and micro/ mesoporous structures of the PACFs were obtained by optimizing the preparation conditions of the PANF-based pre-oxidized fibers (PANOFs)/KOH ratio of 1 : 2 and an activation temperature of 800 C.The as-prepared PACFs exhibited flexibility and endless forms, and sorption capacities of 1.52 mmol g À1for PFOS and 0.73 mmol g À1 for PFOA, much higher than the commercially available coal-based powder activated carbon (PAC) and granular activated carbon (GAC), which was also indicated by the site energy distributions. The sorption system followed a pseudo-second-order kinetic model and a Freundlich isotherm model. The intra-particle diffusion and Boy's film-diffusion models were also used to verify that intra-particle diffusion is the main rate-controlling step. It was assumed that the multilayer sorption most probably occurs through electrostatic attraction and hydrophobic interaction, and some micelles and hemi-micelles form on the ACF surfaces. The PACFs show good reusability over five sorptiondesorption cycle studies.

show abstract

“…It should be noted that other than the work by Kwon et al. (), there is little evidence that PFOS can be transformed biologically.…”

Section: Behavior Of Pfas Associated With Afff In the Subsurfacementioning

confidence: 92%

“…However, there is an ongoing Strategic Environmental Research and Development Program project evaluating engineered aerobic cometabolic reactions to degrade PFOA (Huang, 2013). Another study identified a microbe present in sewage sludge that appears capable of aerobically degrading PFOS (Kwon et al, 2014). It should be noted that other than the work by Kwon et al (2014), there is little evidence that PFOS can be transformed biologically.…”

Section: Observed Transformation Processesmentioning

confidence: 99%

See 1 more Smart Citation

Occurrence and behavior of per‐ and polyfluoroalkyl substances from aqueous film‐forming foam in groundwater systems

Hatton

Holton

DiGuiseppi

2018

Remediation Journal

View full text Add to dashboard Cite

Per‐ and polyfluoroalkyl substances (PFAS) are fluorinated compounds and the active ingredient in aqueous film‐forming foam (AFFF). AFFF has been identified as a significant source of PFAS contamination in groundwater. PFAS are also present in many other industrial and consumer products and their manufacture and use has led to numerous contaminated sites. Human health risks have been identified with studies linking firefighter cancers to training facilities where AFFF was used. Given the widespread release of these compounds to the environment and their potential health risks, understanding their mobility characteristics is important. This article details the occurrence and behavior of these substances in groundwater systems to help guide the emerging fields of PFAS investigation and remediation. Background is presented on AFFF and PFAS source characteristics, including common industrial and consumer PFAS sources. In addition, chemical properties, sorption and retention parameters, and observed transformation properties of PFAS and related compounds are discussed. Finally, knowledge gaps are identified for future laboratory and field studies.

show abstract

Biodegradation of perfluorooctanesulfonate (PFOS) as an emerging contaminant

Cited by 156 publications

References 20 publications

Perfluorinated alkyl substances (PFASs) in northern Spain municipal solid waste landfill leachates

Perfluorinated alkyl substances (PFASs) in northern Spain municipal solid waste landfill leachates

Sorption of perfluorooctane sulfonate and perfluorooctanoate on polyacrylonitrile fiber-derived activated carbon fibers: in comparison with activated carbon

Occurrence and behavior of per‐ and polyfluoroalkyl substances from aqueous film‐forming foam in groundwater systems

Contact Info

Product

Resources

About