Simulating Impacts of Biosparging on Release and Transformation of Poly- and Perfluorinated Alkyl Substances from Aqueous Film-Forming Foam-Impacted Soil.

التفاصيل البيبلوغرافية
العنوان:	Simulating Impacts of Biosparging on Release and Transformation of Poly- and Perfluorinated Alkyl Substances from Aqueous Film-Forming Foam-Impacted Soil.
المؤلفون:	Nickerson A; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St, Golden, Colorado 80401, United States., Maizel AC; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St, Golden, Colorado 80401, United States., Olivares CI; Department of Civil and Environmental Engineering, University of California Berkeley, Berkeley, California 94720, United States., Schaefer CE; CDM Smith, 110 Fieldcrest Ave, Edison, New Jersey 08837, United States., Higgins CP; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois St, Golden, Colorado 80401, United States.
المصدر:	Environmental science & technology [Environ Sci Technol] 2021 Dec 07; Vol. 55 (23), pp. 15744-15753. Date of Electronic Publication: 2021 Nov 08.
نوع المنشور:	Journal Article; Research Support, U.S. Gov't, Non-P.H.S.
اللغة:	English
بيانات الدورية:	Publisher: American Chemical Society Country of Publication: United States NLM ID: 0213155 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5851 (Electronic) Linking ISSN: 0013936X NLM ISO Abbreviation: Environ Sci Technol Subsets: MEDLINE
أسماء مطبوعة:	Publication: Washington DC : American Chemical Society Original Publication: Easton, Pa. : American Chemical Society, c1967-
مواضيع طبية MeSH:	Fluorocarbons/analysis , Groundwater , Water Pollutants, Chemical*/analysis, Soil ; Water
مستخلص:	Poly- and perfluorinated alkyl substances (PFASs) frequently co-occur with fuel-derived contaminants because of the use of aqueous film-forming foam (AFFF). Biosparging is a common remediation technology that injects oxygen into the saturated zone to encourage aerobic biodegradation, thereby altering aquifer redox conditions and potentially facilitating the biotransformation of polyfluorinated substances. Between 136 and 280 pore volumes of nitrogen-sparged or oxygen-sparged artificial groundwater amended with toluene were pumped through four saturated, AFFF-impacted soil columns to assess impacts on PFAS release and transformation. Column effluents and soils were analyzed for PFASs by high-resolution mass spectrometry. Significantly higher concentrations of five PFASs eluted from O 2 -sparged columns compared to N 2 -sparged columns shortly after sparging was initiated. The mass fractions eluted of many zwitterionic, sulfonamide-based PFASs were higher in both sets of columns than unaltered, non-biostimulated columns. Mass balance calculations suggested the transformation of sulfonamide-based precursors to perfluorinated sulfonamides (i.e., perfluorohexanesulfonamide) in oxygen- and nitrogen-sparged columns: recoveries of perfluorinated sulfonamides were 158-235% for C3-C6 homologs but recoveries of several prominent sulfonamide-based zwitterions were low. For example, the recovery of n -carboxyethyldimethyl-ammoniopropyl perfluorohexanesulfonamide was 9-13%. These results suggest biosparging can enhance the transformation and release of PFASs in saturated soils, which has important implications for site characterization and remediation.
فهرسة مساهمة:	Keywords: co-contaminants; groundwater; high-resolution mass spectrometry; per- and polyfluoroalkyl substances; precursors; remediation
المشرفين على المادة:	0 (Fluorocarbons) 0 (Soil) 0 (Water Pollutants, Chemical) 059QF0KO0R (Water)
تواريخ الأحداث:	Date Created: 20211108 Date Completed: 20211210 Latest Revision: 20211214
رمز التحديث:	20240829
DOI:	10.1021/acs.est.1c03448
PMID:	34748313
قاعدة البيانات:	MEDLINE

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