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Scope

Scope Details

Reference
Grenier, D. (2023) Pyrolytic Transformation of PFAS Precursors in AFFF when Applied for Fire Suppression - Doctoral dissertation, Worcester Polytechnic Institute
Treatment Process
Thermolysis
Test Scale
Lab
Matrix
Various
Matrix Detail
Solutions of 3 PFAS precursors or 1% AFFF
Data Detail
Pre-treatment concentrations of 3 PFAS precursors in solution and a 1% AFFF solution. Post-treatment resultant thermal transformation PFAS concentrations from precursor and AFFF tests.

Condition

Open Condition
Treatment Temperature
Treatment Time
Time Units
Treatment Details
Open Condition 40030MinuteFTS transformation examination
Open Condition 30010MinuteAFFF transformation examination
Open Condition 30020MinuteAFFF transformation examination
Open Condition 30030MinuteAFFF transformation examination

Thermal Treatment Results

Link to Results Record
Analyte
Condition
Effectiveness (%)
Effectiveness Measure
Initial Concentration
Post Concentration
Offgas Concentration
Additional Details
10:2 FTS400 °C | 30 minute 100 ng/LND Resultant concentrations include 8:2 FTS at 32 ng/L, 6:2 FTS at 45 ng/L, PFHxA at 8.56 ng/L, and PFOA at 15 ng/L; figure 10.
FtS 8:2400 °C | 30 minute 100 ng/LND Resultant concentrations include 6:2 FTS at 18.5 ng/L, PFBA at 4.79 ng/L, PFHxA at 11.8 ng/L, PFOA at 23 ng/L, and PFOS at 29 ng/L; figure 11.
FtS 6:2400 °C | 30 minute 100 ng/LND Resultant concentrations include PFBS at 6.60 ng/L, PFOA at 32 ng/L, and PFOS at 41.9 ng/L; figure 12.
PFOA300 °C | 10 minute ≈9900 ppt≈1600 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFOS300 °C | 10 minute ≈4640 ppt≈1900 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFDA300 °C | 10 minute ≈4350 ppt≈250 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFDoA300 °C | 10 minute ≈1820 ppt≈100 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFOA300 °C | 20 minute ≈9900 ppt≈1800 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFOS300 °C | 20 minute ≈4640 ppt≈2000 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFDA300 °C | 20 minute ≈4350 ppt≈300 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFDoA300 °C | 20 minute ≈1820 ppt≈100 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFOA300 °C | 30 minute ≈9900 ppt≈2050 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFOS300 °C | 30 minute ≈4640 ppt≈2100 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
PFDA300 °C | 30 minute ≈4350 ppt≈300 pptinitial concentration 1% of value listed in Appendix B; post interpolated from Figure 17
FtS 6:2400 °C | 30 minute ND 45 ng/L Initially spiked with 10:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 10.
FtS 8:2400 °C | 30 minute ND 32 ng/L Initially spiked with 10:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 10.
PFHxA400 °C | 30 minute ND 8.56 ng/L Initially spiked with 10:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 10.
PFOA400 °C | 30 minute ND 15 ng/L Initially spiked with 10:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 10.
FtS 6:2400 °C | 30 minute ND 18.5 ng/L Initially spiked with 8:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 11.
PFBA400 °C | 30 minute ND 4.79 ng/L Initially spiked with 8:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 11.
PFHxA400 °C | 30 minute ND 11.8 ng/L Initially spiked with 8:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 11.
PFOA400 °C | 30 minute ND 23 ng/L Initially spiked with 8:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 11.
PFOS400 °C | 30 minute ND 29 ng/L Initially spiked with 8:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 11.
PFBS400 °C | 30 minute ND 6.6 ng/L Initially spiked with 6:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 12.
PFOA400 °C | 30 minute ND 32 ng/L Initially spiked with 6:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 12.
PFOS400 °C | 30 minute ND 41.9 ng/L Initially spiked with 6:2 FTS at 100 ng/L; results report on intermediate thermal transformation of the spiked compound; figure 12.
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