Scope

Reference: Zhang, W., Cao, H., Subramanya, S.M., Savage, P., and Liang, Y. (2020) Destruction of Perfluoroalkyl Acids Accumulated in Typha latifolia through Hydrothermal Liquefaction - ACS Sustainable Chemistry & Engineering
Treatment Process: Hydrothermal Treatment
Test Scale: Lab
Matrix: Other
Matrix Detail: Water spiked with PFAS
Data Detail: Initial concentration and percent removal of 8 PFAS with and without KOH, percent defluorination of PFOA and PFAS

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Open Condition	Treatment Temperature	Treatment Time	Time Units	Treatment Details
Open Condition	300	2	Hour
Open Condition	350	6	Hour
Open Condition	350	90	Minute
Open Condition	300	2	Hour	PFAS treated with 1 M KOH

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Analyte	Condition	Effectiveness (%)	Effectiveness Measure	Initial Concentration	Post Concentration	Additional Details
PFBA	300 °C \| 2 hour	=100%	Percent Degradation			PFAAs during HTL of pure aqueous solution
PFPeA	300 °C \| 2 hour	=100%	Percent Degradation			PFAAs during HTL of pure aqueous solution
PFHxA	300 °C \| 2 hour	=100%	Percent Degradation			PFAAs during HTL of pure aqueous solution
PFHpA	300 °C \| 2 hour	=100%	Percent Degradation			PFAAs during HTL of pure aqueous solution
PFOA	300 °C \| 2 hour	100%	Percent Degradation			PFAAs during HTL of pure aqueous solution
PFOA	300 °C \| 2 hour	=100%	Percent Defluorination			PFAAs during HTL of pure aqueous solution
PFOS	350 °C \| 90 minute	≈0%	Destruction and Removal Efficiency	50 mg/L	=	negligible amount of PFOS at 50 mg/L was destroyed at 350 °C after 90 min
PFOS	350 °C \| 6 hour	0%	Destruction and Removal Efficiency	186 mg/L		PFOS at 186 mg/L showed little reactivity at 350°C after 6h
PFOS	300 °C \| 2 hour	=85.9%	Percent Removed

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