So difficult to eliminate!

Pagina 8 di 8

An extremely stable molecular structure and the physical and chemical characteristics of PFAS make them persistent in the environment and difficult to eliminate from the soil mass. The optimal remediation strategy for a given contaminated site is determined by a number of site characteristics, such as site location and nearby land use, time and budget constraints, soil characteristics (organic matter, mineralogy, clay content, pH, salinity, nature of the cation index), the characteristics of the PFAS (level of contamination, type of PFAS to be eliminated) and the expected degree of repair.

Difference free PFAS - bound PFAS: drinking water	Difference free PFAS - bound PFAS: water leaving the treatment plant	Difference free PFAS - bound PFAS: water leaving the treatment plant
PFAS	As it is	Oxidized	PFAS	As it is	Oxidized	PFAS	As it is	Oxidized
	ng/l	ng/l		ng/l	ng/l		ng/l	ng/l
PFBA	100	209	PFBA	52	150	PFBA	2510	6550
PFPeA	55	72	PFPeA	17	81	PFPeA	4660	14500
PFBS	105	122	PFBS	109	236	PFBS	<2500	4900
PFHxA	58	70	PFHxA	43	489	PFHxA	3050	7500
PFHpA	20	37	PFHpA	17	77	PFHpA	3250	8250
PFHxS	14	15	PFHxS	15	14	PFHxS	<1000	1950
PFOA	315	291	PFOA	139	163	PFOA	5810	9920
PFNA	<10	<10	PFNA	<10	<10	PFNA	3310	7350
PFDeA	<10	<10	PFDeA	<10	<10	PFDeA	35100	65230
PFOS	38	20	PFOS	9	10	PFOS	<1000	1840
PFUnA	<10	<10	PFUnA	<10	<10	PFUnA	6280	12500
PFDoA	<10	<10	PFDoA	<10	<10	PFDoA	<1000	2100
Total PFAS	703	836	Total PFAS	401	1220	PFAS summation	63970	142590

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PFAS - So difficult to eliminate!

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