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Scope

Scope Details

Reference
Watanabe, N., Takemine, S., Yamamoto, K., Haga, Y., and Takata, M. (2016) Residual organic fluorinated compounds from thermal treatment of PFOA, PFHxA and PFOS adsorbed onto granular activated carbon (GAC) - Journal of Material Cycles & Waste Management
Treatment Process
GAC Reactivation
Test Scale
Lab
Matrix
Treatment Media
Matrix Detail
GAC spiked with PFHxA
Data Detail
Recovery rate of F in 7 sample locations at 4 temperatures; percent of 5 PFCAs in off gas at 4 temperatures

Condition

Open Condition
Treatment Temperature
Treatment Time
Time Units
Treatment Details
Open Condition 70010MinuteTreatment time representative of time in furnace; exposed to nitrogen gas for 2 minutes at 1.5 L/min
Open Condition 80010MinuteTreatment time representative of time in furnace; exposed to nitrogen gas for 2 minutes at 1.5 L/min
Open Condition 90010MinuteTreatment time representative of time in furnace; exposed to nitrogen gas for 2 minutes at 1.5 L/min
Open Condition 100010MinuteTreatment time representative of time in furnace; exposed to nitrogen gas for 2 minutes at 1.5 L/min

Thermal Treatment Results

Link to Results Record
Analyte
Condition
Effectiveness (%)
Effectiveness Measure
Initial Concentration
Post Concentration
Offgas Concentration
Additional Details
PFHxA700 °C | 10 minute ≈8% Percent Fluorine Recovery10 mg/g Not detectedNot detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA700 °C | 10 minute ≈42% Percent Fluorine Recovery10 mg/g Not detectedNot detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA700 °C | 10 minute ≈5% Percent Fluorine Recovery10 mg/g Not detectedNot detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA800 °C | 10 minute ≈4% Percent Fluorine Recovery10 mg/g Not detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA800 °C | 10 minute ≈77% Percent Fluorine Recovery10 mg/g Not detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFPeA800 °C | 10 minute ≈0.017% Recovery Rate in Off-Gas0 mg/g No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFBA800 °C | 10 minute ≈0.026% Recovery Rate in Off-Gas0 mg/g No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA900 °C | 10 minute ≈7% Percent Fluorine Recovery10 mg/g Not detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA900 °C | 10 minute ≈64% Percent Fluorine Recovery10 mg/g Not detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFBA900 °C | 10 minute ≈0.17% Recovery Rate in Off-Gas0 mg/g No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA1000 °C | 10 minute ≈1% Percent Fluorine Recovery10 mg/g Not detectedNot detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA1000 °C | 10 minute ≈1% Percent Fluorine Recovery10 mg/g Not detectedNot detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
PFHxA1000 °C | 10 minute ≈80% Percent Fluorine Recovery10 mg/g Not detectedNot detected No PFASs remained in either quartz tube or GAC; quantification limit = 0.05 ug F; No VOF recovered in Tenax TA tube; quantification limit = 0.3 ug F; data interpolated from Fig. 3
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