A review of the occurrence and microbial transformation of per- and polyfluoroalkyl substances (PFAS) in aqueous film-forming foam (AFFF)-impacted environments
The Science of The Total Environment,
Год журнала:
2024,
Номер
927, С. 171883 - 171883
Опубликована: Март 24, 2024
Язык: Английский
Harnessing the power of microbial consortia for the biodegradation of per- and polyfluoroalkyl substances: Challenges and opportunities
Chemosphere,
Год журнала:
2025,
Номер
374, С. 144221 - 144221
Опубликована: Фев. 21, 2025
Язык: Английский
Fatty Acid Metabolic Impairment in Soil Microbes Induced by PFAS: Dependence on the Fluorocarbon Chain Length, Headgroups, and Ether Attached
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 14, 2025
Per-
and
polyfluoroalkyl
substances
(PFASs)
with
varying
chain
lengths,
headgroups,
alternative
structures
are
widespread
persistent
in
soil,
yet
knowledge
of
their
biological
effects
toxic
mechanisms
on
soil
microorganisms
is
limited.
This
study
identified
the
structure-dependent
impacts
PFAS
microbial
fatty
acid
(FA)
profiles
by
integrated
field-laboratory
investigations.
The
field
investigation
uncovered
distinct
PFAS-FA
interaction
patterns,
fluorocarbon
(FC)
length
functional
group,
FA
hydrocarbon
(HC)
unsaturation
degree.
Specifically,
long-chain
perfluoroalkyl
carboxylic
acids
(PFCAs,
FC7-17)
increased
medium/long-chain
FAs
(HC
≤
17)
monounsaturated
(MUFAs),
while
sulfonic
(PFSAs,
FC6-8)
enhanced
longer-chain
>
MUFAs.
Additionally,
perfluoroether
(PFECAs)
as
well
short-chain
PFCAs
(FC
<
7)
PFSAs
6),
which
commonly
used
alternatives
to
PFCAs/PFSAs,
were
associated
polyunsaturated
(PUFAs).
laboratory
Pseudomonas
aeruginosa
PAO1
validated
these
metabolic
disruptions
revealed
broader
perturbations
phospholipids,
acetyl-CoA,
secondary
metabolite
metabolisms,
providing
insights
into
dysregulated
membrane
synthesis,
C/N
bacteria
quorum
sensing
(QS)
processes.
These
findings
reveal
novel
PFASs
microorganisms,
highlighting
potential
biomarkers
for
assessing
toxicity
health.
Язык: Английский
Adaptive Fluoride Removal Across Concentration Scales: Potential Roles of Microbial and Acicular Gypsum Interactions in Nitrogen and Phosphate Cycling
Journal of Hazardous Materials,
Год журнала:
2025,
Номер
unknown, С. 138628 - 138628
Опубликована: Май 1, 2025
Язык: Английский
Methylisothiazolinone modulates community assembly and improves syntrophic cooperation via adaptive evolution during sludge anaerobic digestion
Chemical Engineering Journal,
Год журнала:
2024,
Номер
unknown, С. 156277 - 156277
Опубликована: Сен. 1, 2024
Язык: Английский
Nexus of Soil Microbiomes, Genes, Classes of Carbon Substrates, and Biotransformation of Fluorotelomer-Based Precursors
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(46), С. 20553 - 20565
Опубликована: Ноя. 6, 2024
The
unpredictable
biodegradation
of
fluorotelomer
(FT)-based
per-
and
polyfluoroalkyl
substances
(PFAS)
causes
complicated
risk
management
PFAS-impacted
sites.
Here,
we
have
successfully
used
redundancy
analysis
to
link
FT-based
precursor
key
microbes
genes
soil
microbiomes
shaped
by
different
classes
carbon
sources:
alcohols
(C2–C4),
alkanes
(C6
C8),
an
aromatic
compound
(phenol),
or
a
hydrocarbon
surfactant
(cocamidopropyl
betaine
[CPB]).
All
the
enrichments
defluorinated
(n:2
FtOH;
n
=
4,
6,
8)
effectively
grew
on
6:2
sulfonate
(6:2
FtS)
as
sulfur
source.
butanol-enriched
culture
showed
highest
defluorination
extent
for
FtOHs
FtS
due
high
microbial
diversity
abundance
desulfonating
defluorinating
genes.
CPB-enriched
accumulated
more
5:3
carboxylic
acid,
suggesting
unique
roles
Variovorax
Pseudomonas.
Enhanced
FtOH
was
observed
synergism
between
two
with
source
except
those
phenol-
cultures.
While
sulfonamidoalkyl
not
degraded,
trace
levels
amines
were
detected.
identified
species
involved
in
desulfonation,
defluorination,
metabolism
are
promising
biomarkers
assessing
degradation
at
Язык: Английский
Biotransformation of 6:2/4:2 fluorotelomer alcohols by Dietzia aurantiaca J3: Enzymes and proteomics
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
478, С. 135510 - 135510
Опубликована: Авг. 13, 2024
Per-
and
polyfluoroalkyl
substances
(PFAS)
are
recalcitrant
synthetic
organohalides
known
to
negatively
impact
human
health.
Short-chain
fluorotelomer
alcohols
considered
the
precursor
of
various
perfluorocarboxylic
acids
(PFCAs)
in
environment.
Their
ongoing
production
widespread
detection
motivate
investigations
their
biological
transformation.
Dietzia
aurantiaca
strain
J3
was
isolated
from
PFAS-contaminated
landfill
leachate
using
6:2
sulphonate
(6:2
FTS)
as
a
sulphur
source.
Resting
cell
experiments
were
used
test
if
could
transform
4:2
FTOH).
Strain
transformed
into
PFCAs,
polyfluorocarboxylic
transient
intermediates.
Over
6
days,
80
%
58
FTOH
(0.1
mM)
(0.12
degraded
with
6.4
14
fluoride
recovery
respectively.
Fluorotelomer
unsaturated
carboxylic
acid
FTUCA)
most
abundant
metabolite,
accounting
for
21
30
mol%
(0.015
applied
on
day
zero.
Glutathione
(GSH)
conjugates
6:2/4:2
5:3
FTCA
adducts
also
structurally
identified.
Proteomics
studies
conducted
identify
enzymes
biotransformation
pathway
have
revealed
role
involved
β
oxidation.
This
is
first
report
glutathione
prokaryotes,
study
explore
by
pure
bacterial
strain.
Язык: Английский
Fate and Transformation of 15 Classes of Per- and Polyfluoroalkyl Substances in Aqueous Film-Forming Foam (AFFF)-Amended Soil Microcosms
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(51), С. 22777 - 22789
Опубликована: Дек. 10, 2024
The
environmental
fate
of
per-
and
polyfluoroalkyl
substances
(PFAS)
in
aqueous
film-forming
foams
(AFFFs),
especially
those
synthesized
by
electrochemical
fluorination
(ECF)
processes,
remains
largely
unknown.
This
study
evaluated
the
transformation
AFFF-derived
ECF-based
precursors
aerobic
soil
microcosms
amended
with
a
historically
used
AFFF
formulation
(3M
Light
WaterTM).
Fifteen
classes
PFAS,
including
components
products,
were
identified
or
tentatively
suspect
screening/nontargeted
analysis
(SSA/NTA)
throughout
308-day
incubation.
demonstrates
that
serve
as
sources
perfluoroalkane
sulfonamides
(FASAs)
perfluoroalkyl
acids
(PFAAs),
which
are
commonly
detected
at
AFFF-impacted
sites.
Temporal
sampling
provided
evidence
for
biotransformation
multiple
tri-
dimethyl
ammonio
propyl
sulfonamides.
Additionally,
stability
(i.e.,
resistance
to
transformation)
was
found
depend
upon
structural
characteristics,
chain
length,
presence
sulfonamide
carboxamide
groups,
functional
groups
(e.g.,
branch
carboxyalkyl
group)
attached
nitrogen
atoms.
These
findings
provide
insights
into
pathways
PFAS
other
structurally
similar
will
support
management
remediation
contamination
legacy
Язык: Английский