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Tags
HERO ID
5883626
Reference Type
Journal Article
Title
Efficient removal of GenX (HFPO-DA) and other perfluorinated ether acids from drinking and recycled waters using anion exchange resins
Author(s)
Dixit, F; Barbeau, B; Mostafavi, SG; Mohseni, M
Year
2019
Is Peer Reviewed?
Yes
Journal
Journal of Hazardous Materials
ISSN:
0304-3894
EISSN:
1873-3336
Volume
384
Page Numbers
121261
Language
English
PMID
31574386
DOI
10.1016/j.jhazmat.2019.121261
Web of Science Id
WOS:000535561100046
Abstract
Carcinogenic GenX chemicals, heptafluoropropylene-oxide-dimer-acid (HFPO-DA), have been recently detected in surface, ground and recycled water sources worldwide. However, GenX removals under the influence of variable characteristics of the organic and inorganic compounds present in the natural water sources, have often been overlooked in scientific literature. This is critically important given that the ionic composition and characteristics of organic matter in natural waters are spatially and seasonally variable. A strongly basic anion exchange (IX) resin was used to remove GenX and two other perfluorinated ether acids (PFEAS) from natural surface and recycled water sources. Factors influencing the uptake behavior included the PFEAS concentrations, resin dosage, and background anion characteristics. The equivalent background compound was employed to evaluate the competitive uptake between natural organic matter (NOM), inorganic ions and PFEAS in natural water matrices. Experimental data were compared with different mathematical and physical models and it was depicted that approximately 4-6% of the initial NOM competed with PFEAS for active exchange sites. Further, IX was able to achieve complete PFEAS removal (Cfinal<10 ng/L) with simultaneous removal of>60% NOM and >80% inorganic ions. Results of this study indicate that IX exhibits great potential for PFEAS removal from natural drinking water sources.
Keywords
GenX; Competitive interactions; Perfluorinated compounds; NOM; Short-chained PFASs
Tags
PFAS
•
Additional PFAS (formerly XAgency)
•
Expanded PFAS SEM (formerly PFAS 430)
Ammonium 4,8-dioxa-3H-perfluorononanoate
•
GenX Chemicals (CASRN 13252-13-6 and CASRN 62037-80-3)
LitSearch: GenX - Feb 2019-Oct 2019
PubMed
Additional Strategies
LitSearch: GenX Ammonium Salt - Feb 2019-Oct 2019
PubMed
•
PFAS 150
Literature Search Update December 2021
PubMed
Missing 2021 searches
Literature Search Update December 2020
PubMed
Literature Search August 2019
PubMed
Not prioritized for screening
Perfluorinated compounds
Perfluoro-2-methyl-3-oxahexanoic acid
Other
•
Harmful Algal Blooms- Health Effects
April 2021 Literature Search
WOS
Microcystins
Date Limited
WOS
Not Date Limited
WOS
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