Water,
Год журнала:
2025,
Номер
17(9), С. 1319 - 1319
Опубликована: Апрель 28, 2025
Per-
and
polyfluoroalkyl
substances
(PFASs),
a
class
of
synthetic
organic
compounds
since
the
1940s,
have
become
widespread
persistent
environmental
pollutants.
Due
to
their
high
chemical
stability,
bioaccumulation
potential,
extensive
industrial
household
applications,
PFASs
drawn
significant
attention
from
researchers
worldwide
in
recent
years,
while
hot
topic,
publications
are
updated
very
quickly.
Various
remediation
technologies,
including
adsorption,
pyrolysis,
biodegradation,
advanced
oxidation,
been
developed
treated
as
leading
techniques
mitigate
PFAS
contamination.
Other
alternative
foam
fractionation,
constructed
wetland,
piezoelectric
ball
milling.
However,
effectiveness
these
methods
varies
depending
on
reaction
mechanisms,
operational
conditions,
factors.
This
review
provides
comprehensive
summary
latest
advancements
removal
strategies,
highlighting
advantages,
limitations,
potential
synergies.
Furthermore,
future
research
directions
technological
developments
discussed
explore
more
efficient,
sustainable,
cost-effective
solutions
for
remediation.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 16, 2025
The
nonthermal
destruction
of
aqueous
film-forming
foam
(AFFF)
stockpiles,
one
the
major
culprits
responsible
for
water
and
soil
contamination
by
per-
polyfluoroalkyl
substances
(PFAS),
is
extremely
challenging
because
coexistence
mixed
recalcitrant
PFAS
complicated
organic
matrices
at
high
concentrations.
To
date,
complete
defluorination
undiluted
AFFF
ambient
conditions
has
not
been
demonstrated.
This
study
reports
a
novel
piezoelectric
ball
milling
approach
treating
with
total
fluorine
concentration
9080
mg/L
carbon
234
g/L.
Near-complete
(>95%
conversion
organofluorine
to
fluoride)
was
achieved
comilling
boron
nitride.
By
carefully
examining
experimental
data,
we
identified
liquid
film
thickness
(Z)
collision
interface
as
descriptor
treatment
performance.
We
further
validated
that
effective
proceeded
when
Z
less
than
criteria
value
2.3
μm.
In
light
this
new
understanding,
addition
SiO2
dispersant
pre-evaporation
solvents
reduce
have
strategies
promote
capacity.
Sustainability,
Год журнала:
2023,
Номер
15(23), С. 16173 - 16173
Опубликована: Ноя. 21, 2023
Per
and
polyfluoroalkyl
substances
(PFAS)
have
been
extensively
employed
in
a
broad
range
of
manufacturing
consumer
goods
due
to
their
highly
persistent
nature.
PFAS
exposure
is
recognized
pose
serious
health
hazards;
therefore,
addressing
pollution
water
has
become
top
priority
for
public
environmental
protection
organizations.
This
review
article
focuses
on
the
efficiency
different
removal
techniques
(activated
carbon,
biochar,
ion
exchange
resin,
membrane
filtration,
reverse
osmosis,
metal-organic
frameworks,
foam
fractionation,
ozone
destruction
techniques)
eliminating
types
short-
long-chain
from
water.
Hydrophobicity
electrostatic
interactions
are
revealed
be
primary
mechanisms
elimination
PFAS.
The
all
eradicate
short-chain
comparatively
lower
compared
most
efficient
but
some
drawbacks,
including
formation
precursors
high
operational
costs.
According
findings
study,
it
anticipated
that
combined
methods
will
required
effectively
remediate
PFAS-contaminated
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 3, 2024
The
products
of
incomplete
destruction
(PIDs)
per-
and
polyfluoroalkyl
substances
(PFAS)
represent
a
substantial
ambiguity
when
employing
thermal
treatments
to
remediate
PFAS-contaminated
materials.
In
this
study,
we
present
new
information
on
PIDs
produced
in
both
inert
oxidative
environments
from
five
long-chain
PFAS,
including
three
now
regulated
under
the
U.S.
Safe
Drinking
Water
Act,
one
cationic
precursor
compound,
C10
PFAS.
data
did
not
support
generation
tetrafluoromethane
any
studied
carbonyl
fluoride
was
found
only
potassium
perfluorooctanesulfonate
(K-PFOS)
heated
air
narrow
temperature
range.
Oxidative
conditions
(air)
were
observed
facilitate
PFAS
degradation
accelerate
mineralization
K-PFOS.
Spectroscopic
suggest
that
is
initiated
by
cleavage
bonds
form
perfluoroalkyl
radicals,
leading
organofluorine
(e.g.,
perfluoroalkenes).
air,
radicals
react
with
oxygen
oxygen-containing
PIDs.
enhanced
adding
solid
additives,
which
categorized
as
highly
effective
granular
activated
carbon
(GAC)
certain
noble
metals),
moderately
effective,
noneffective.
Remarkably,
simply
GAC,
achieved
>90%
perfluorooctanoic
acid
at
300
°C
∼1.9
atm
within
just
60
min
without
using
water
or
solvents.
Abstract
Perfluoroalkyl
and
polyfluoroalkyl
substances
(PFASs)
are
persistent,
bioaccumulative
anthropogenic
pollutants
that
have
attracted
the
attention
of
public
private
sectors
because
their
adverse
impact
on
human
health
1
.
Although
various
technologies
been
deployed
to
degrade
PFASs
with
a
focus
non-polymeric
functionalized
compounds
(perfluorooctanoic
acid
perfluorooctanesulfonic
acid)
2–4
,
general
PFAS
destruction
method
coupled
fluorine
recovery
for
upcycling
is
highly
desirable.
Here
we
disclose
protocol
converts
multiple
classes
PFAS,
including
fluoroplastics
polytetrafluoroethylene
polyvinylidene
fluoride,
into
high-value
fluorochemicals.
To
achieve
this,
were
reacted
potassium
phosphate
salts
under
solvent-free
mechanochemical
conditions,
mineralization
process
enabling
as
KF
K
2
PO
3
F
fluorination
chemistry.
The
can
be
recovered
reuse,
implying
no
detrimental
phosphorus
cycle.
Therefore,
not
only
destructible
but
now
contribute
sustainable
circular
economy.
