Per- and polyfluoroalkyl substances in commercially available biosolid-based products The effect of treatment processes

Per- and polyfluoroalkyl substances in commercially available biosolid-based products : The effect of treatment processes

© 2019 Water Environment Federation.

Bibliographische Detailangaben
Veröffentlicht in:Water environment research : a research publication of the Water Environment Federation. - 1998. - 91(2019), 12 vom: 07. Dez., Seite 1669-1677
1. Verfasser: Kim Lazcano, Rooney (VerfasserIn)
Weitere Verfasser: de Perre, Chloé, Mashtare, Michael L, Lee, Linda S
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Water environment research : a research publication of the Water Environment Federation
Schlagworte:Journal Article PFAA precursors blending composting heat treatment perfluoroalkyl acids thermal hydrolysis Fluorocarbons Water Pollutants, Chemical
Beschreibung
Zusammenfassung:© 2019 Water Environment Federation.
Per- and polyfluoroalkyl substances (PFAS) have been used in a variety of consumer and industrial products and are known to accumulate in sewage sludge due to sorption and their recalcitrant nature. Treatment processes ensure safe and high-quality biosolids by reducing the potential for adverse environmental impacts such as pathogen levels; however, they have yet to be evaluated for their impact on the fate of PFAS. The objective of this study was to compare PFAS concentrations in four commercially available biosolid-based products that received different types of treatments: heat treatment, composting, blending, and thermal hydrolysis. Seventeen perfluoroalkyl acids (PFAAs) were quantified using liquid chromatography with tandem quadrupole time-of-flight mass spectrometry followed by screening for 30 PFAA precursors. Treatment processes did not reduce PFAA loads except for blending, which served only to dilute concentrations. Several PFAA precursors were identified with 6:2 and 8:2 fluorotelomer phosphate diesters in all samples pre- and post-treatment. PRACTITIONER POINTS: Heat treatment and composting increased perfluoroalkyl acid (PFAA) concentrations. Only dilution from blending with non-PFAS material decreased PFAA concentrations. Thermal hydrolysis process had no apparent effect on PFAA concentrations. PFAS sources are a greater driver of PFAS loads in biosolid-based products than treatment processes
Beschreibung:Date Completed 21.11.2019
Date Revised 08.01.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1554-7531
DOI:10.1002/wer.1174