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Scope

Scope Details

Reference
Wang, F., Lu, X., Li, X., and Shih, K. (2015) Effectiveness and Mechanisms of Defluorination of Perfluorinated Alkyl Substances by Calcium Compounds during Waste Thermal Treatment - Environmental Science and Technology
Treatment Process
Pyrolysis
Test Scale
Lab
Matrix
Other
Matrix Detail
Pure PFAS
Data Detail
Transformation ratio of 4 PFAS to CaF2, various combinations of temperature, time, and CaOH2

Condition

Open Condition
Treatment Temperature
Treatment Time
Time Units
Treatment Details
Open Condition 35015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 30015MinuteCo treated with Co(OH)2
Open Condition 40015MinuteCo-treated with CaO
Open Condition 40015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 50015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 60015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 70015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 80015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 90015MinutePFOS thermal treatment with Ca(OH)2.
Open Condition 60015MinuteCo treated with CaO
Open Condition 50015MinuteCo treated with CaO
Open Condition 70015MinuteCo treated with CaO
Open Condition 80015MinuteCo-treated with CaO
Open Condition 90015MinuteCo treated with CaO
Open Condition 50015MinuteCo treatment with Ca(CO3)2
Open Condition 60015MinuteCo treatment with Ca(CO3)2
Open Condition 70015MinuteCo treatment with Ca(CO3)2
Open Condition 80015MinuteCo treatment with Ca(CO3)2
Open Condition 90015MinuteCo treatment with Ca(CO3)2
Open Condition 40015MinuteCo treatment of PFOS and PFHxS with Ca(OH)2
Open Condition 50015MinuteCo treatment of PFOS and PFHxS with Ca(OH)2
Open Condition 60015MinuteCo treatment of PFOS and PFHxS with Ca(OH)2
Open Condition 70015MinuteCo treatment of PFOS and PFHxS with Ca(OH)2
Open Condition 80015MinuteCo treatment of PFOS and PFHxS with Ca(OH)2
Open Condition 90015MinuteCo treatment of PFOS and PFHxS with Ca(OH)2
Open Condition 40015MinuteCo treatment of PFOS, PFOA and FOSA with Ca(OH)2
Open Condition 50015MinuteCo treatment of PFOS, PFOA and FOSA with Ca(OH)2

Thermal Treatment Results

Link to Results Record
Analyte
Condition
Effectiveness (%)
Effectiveness Measure
Initial Concentration
Post Concentration
Offgas Concentration
Additional Details
PFOS350 °C | 15 minute ≈60% Transformation Ratio of fluorine into CaF2Ca (OH)2 strongly react with PFOS to form crystal CaF2 at 350 °C
PFOS400 °C | 15 minute <20% Transformation Ratio of fluorine into CaF2
PFOS300 °C | 15 minute ≈0% Transformation Ratio of fluorine into CaF2
PFOS400 °C | 15 minute ≈65% Transformation Ratio of fluorine into CaF2
PFOS500 °C | 15 minute ≈70% Transformation Ratio of fluorine into CaF2
PFOS600 °C | 15 minute ≈80% Transformation Ratio of fluorine into CaF2
PFOS700 °C | 15 minute ≈82.5% Transformation Ratio of fluorine into CaF2
PFOS800 °C | 15 minute ≈82.5% Transformation Ratio of fluorine into CaF2
PFOS900 °C | 15 minute ≈85% Transformation Ratio of fluorine into CaF2
PFOS500 °C | 15 minute ≈85% Transformation Ratio of fluorine into CaF2
PFOS600 °C | 15 minute ≈95% Transformation Ratio of fluorine into CaF2
PFOS700 °C | 15 minute ≈100% Transformation Ratio of fluorine into CaF2
PFOS800 °C | 15 minute ≈98% Transformation Ratio of fluorine into CaF2
PFOS900 °C | 15 minute ≈97.5% Transformation Ratio of fluorine into CaF2
PFOS500 °C | 15 minute ≈50% Transformation Ratio of fluorine into CaF2
PFOS600 °C | 15 minute ≈55% Transformation Ratio of fluorine into CaF2
PFOS700 °C | 15 minute ≈50% Transformation Ratio of fluorine into CaF2
PFOS800 °C | 15 minute ≈70% Transformation Ratio of fluorine into CaF2
PFOS900 °C | 15 minute ≈60% Transformation Ratio of fluorine into CaF2
PFHxS400 °C | 15 minute ≈60% Transformation Ratio of fluorine into CaF2
PFOS400 °C | 15 minute ≈65% Transformation Ratio of fluorine into CaF2
PFHxA500 °C | 15 minute ≈70% Transformation Ratio of fluorine into CaF2
PFOS500 °C | 15 minute ≈75% Transformation Ratio of fluorine into CaF2
PFHxS600 °C | 15 minute ≈70% Transformation Ratio of fluorine into CaF2
PFOS600 °C | 15 minute ≈80% Transformation Ratio of fluorine into CaF2
PFHxS700 °C | 15 minute ≈90% Transformation Ratio of fluorine into CaF2
PFOS700 °C | 15 minute ≈80% Transformation Ratio of fluorine into CaF2
PFHxS800 °C | 15 minute ≈90% Transformation Ratio of fluorine into CaF2
PFOS800 °C | 15 minute ≈80% Transformation Ratio of fluorine into CaF2
PFHxS900 °C | 15 minute ≈90% Transformation Ratio of fluorine into CaF2
PFOS900 °C | 15 minute ≈80% Transformation Ratio of fluorine into CaF2
PFOA400 °C | 15 minute ≈40% Transformation Ratio of fluorine into CaF2
PFOS400 °C | 15 minute ≈62.5% Transformation Ratio
PFOSA400 °C | 15 minute ≈20% Transformation Ratio of fluorine into CaF2
PFOS500 °C | 15 minute ≈72.5% Percent Reduction
PFOA500 °C | 15 minute ≈30% Transformation Ratio of fluorine into CaF2
PFOSA500 °C | 15 minute ≈30% Transformation Ratio of fluorine into CaF2
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