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Scope

Scope Details

Reference
Krug, J., Lemiux, P.M., Lee, C-W., Ryan, J.V., Kariher, P., Shields, E., Wickersham, L., Denison, M., Davis, K., Swensen, D., Burnette, R., Wendt, J.O.L., and Linak, W.P. (2021) Combustion of C1 and C2 PFAS: Kinetic Modeling and Experiments - 38th International Conference on Thermal Treatment Technologies and Hazardous Waste Combustors
Treatment Process
Incineration
Test Scale
Pilot
Matrix
Other
Matrix Detail
Pure PFAS
Data Detail
Destruction efficiency of 3 gaseous PFAS (CF4, CHF3, C2F6) injected at various ports (Tables 2 and 2a); residual concentrations of PFAS and various other combustion products under same condtions (Table 3)

Condition

Open Condition
Treatment Temperature
Treatment Time
Time Units
Treatment Details
Open Condition 20717.4SecondAt flame. The model assumed an initial adiabatic flame temperature (2071 °C) and a linear temperature decay to Port 1. PFAS introduced with the natural gas or combustion air (t=0 sec) experience the full temperature profile (Figure 3) and flame chemistry before being analyzed by FTIR at Port 18 (t~7.4 sec). However, PFAS introduced at Ports 4‐12 experienced reduced temperatures, residence times, and exposure to flame chemistry. For example, CHF3 introduced at Port 12, was exposed to peak temperatures of ~830 °C (1526 °F) before being analyzed by FTIR at Port 18 ~3 sec later.
Open Condition 10905SecondPort 4. PFAS introduced with the natural gas or combustion air (t=0 sec) experience the full temperature profile (Figure 3) and flame chemistry before being analyzed by FTIR at Port 18 (t~7.4 sec). However, PFAS introduced at Ports 4‐12 experienced reduced temperatures, residence times, and exposure to flame chemistry. For example, CHF3 introduced at Port 12, was exposed to peak temperatures of ~830 °C (1526 °F) before being analyzed by FTIR at Port 18 ~3 sec later.
Open Condition 9634.2SecondPort 8. PFAS introduced with the natural gas or combustion air (t=0 sec) experience the full temperature profile (Figure 3) and flame chemistry before being analyzed by FTIR at Port 18 (t~7.4 sec). However, PFAS introduced at Ports 4‐12 experienced reduced temperatures, residence times, and exposure to flame chemistry. For example, CHF3 introduced at Port 12, was exposed to peak temperatures of ~830 °C (1526 °F) before being analyzed by FTIR at Port 18 ~3 sec later.
Open Condition 9253.6SecondPort 10. PFAS introduced with the natural gas or combustion air (t=0 sec) experience the full temperature profile (Figure 3) and flame chemistry before being analyzed by FTIR at Port 18 (t~7.4 sec). However, PFAS introduced at Ports 4‐12 experienced reduced temperatures, residence times, and exposure to flame chemistry. For example, CHF3 introduced at Port 12, was exposed to peak temperatures of ~830 °C (1526 °F) before being analyzed by FTIR at Port 18 ~3 sec later.
Open Condition 9003.3SecondPort 11. Temperature is modeled. PFAS introduced with the natural gas or combustion air (t=0 sec) experience the full temperature profile (Figure 3) and flame chemistry before being analyzed by FTIR at Port 18 (t~7.4 sec). However, PFAS introduced at Ports 4‐12 experienced reduced temperatures, residence times, and exposure to flame chemistry. For example, CHF3 introduced at Port 12, was exposed to peak temperatures of ~830 °C (1526 °F) before being analyzed by FTIR at Port 18 ~3 sec later.
Open Condition 8313SecondPort 12. PFAS introduced with the natural gas or combustion air (t=0 sec) experience the full temperature profile (Figure 3) and flame chemistry before being analyzed by FTIR at Port 18 (t~7.4 sec). However, PFAS introduced at Ports 4‐12 experienced reduced temperatures, residence times, and exposure to flame chemistry. For example, CHF3 introduced at Port 12, was exposed to peak temperatures of ~830 °C (1526 °F) before being analyzed by FTIR at Port 18 ~3 sec later.
Open Condition 12007SecondInjected at port 1; temperature and treatment time is estimated based on Figure 2. CF4 injected through the natural gas or combustion air at 64 kW furnace load.
Open Condition 12356.3SecondInjected at port 2; temperature and treatment time is estimated based on Figure 2. CF4 injected through the natural gas or combustion air at 64 kW furnace load.

Thermal Treatment Results

Link to Results Record
Analyte
Condition
Effectiveness (%)
Effectiveness Measure
Initial Concentration
Post Concentration
Offgas Concentration
Additional Details
CF42071 °C | 7.4 second 58% Destruction and Removal EfficiencyTable 2.
C2F62071 °C | 7.4 second >99% Destruction and Removal EfficiencyTable 2. Measured FTIR concentration was not 3x higher than residual indicating very little of the compound remaining.
CHF31090 °C | 5 second >99% Destruction and Removal EfficiencyTable 2. Measured FTIR concentration was not 3x higher than residual indicating very little of the compound remaining.
C2F61090 °C | 5 second >99% Destruction and Removal EfficiencyTable 2. Measured FTIR concentration was not 3x higher than residual indicating very little of the compound remaining.
C2F6963 °C | 4.2 second 71.4% Destruction and Removal EfficiencyTable 2.
CHF3925 °C | 3.6 second >99% Destruction and Removal EfficiencyTable 2. Measured FTIR concentration was not 3x higher than residual indicating very little of the compound remaining.
C2F6925 °C | 3.6 second 19.7% Destruction and Removal EfficiencyTable 2.
CF4900 °C | 3.3 second 13.9% Destruction and Removal EfficiencyTable 2.
CHF3831 °C | 3 second 94.1% Destruction and Removal EfficiencyTable 2.
C2F6831 °C | 3 second ≈0% Destruction and Removal EfficiencyTable 2. Due to measurement uncertainty, the calculated DE was slightly negative.
CF41200 °C | 7 second 80.4% Destruction and Removal EfficiencyTable 2a.
CF41200 °C | 7 second 70.8% Destruction and Removal EfficiencyTable 2a.
CF41235 °C | 6.3 second 94.2% Destruction and Removal EfficiencyTable 2a.
CF41235 °C | 6.3 second 87.4% Destruction and Removal EfficiencyTable 2a.
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Last updated on October 15, 2024.