Journal of Hazardous Materials Letters,
Год журнала:
2023,
Номер
4, С. 100079 - 100079
Опубликована: Июнь 28, 2023
Concerns
surrounding
potential
health
and
environmental
impacts
of
per-
polyfluoroalkyl
substances
(PFAS)
are
growing
at
tremendous
rates
because
adverse
expected
with
trace-level
exposures.
Extreme
measures
required
to
mitigate
PFAS
contamination
minimize
Extensive
use
results
in
the
release
diverse
species
from
domestic,
industrial,
municipal
effluents
wastewater,
which
partition
biosolids
throughout
secondary
treatment.
Biosolids
generated
during
wastewater
treatment
a
major
source
due
prevailing
disposal
practices
as
fertilizers.
Pyrolysis
is
emerging
viable,
scalable
technology
for
removal
while
retaining
nutrients
generating
renewable,
raw
materials
energy
generation.
Despite
early
successes
pyrolysis
removal,
significant
unknowns
remain
about
transformation
product
fates
products
emissions.
Applicable
sampling
methods,
analytical
workflows,
assessments
currently
limited
subset
high-interest
analytes
matrices.
Further,
analysis
exhaust
gases,
particulate
matter,
fly
ashes,
other
end-products
largely
unreported
or
cost
limitations.
This
paper
identifies
critical
knowledge
gaps
on
that
must
be
addressed
assess
effectiveness
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
466, С. 133637 - 133637
Опубликована: Янв. 29, 2024
Addressing
per-and
polyfluoroalkyl
substances
(PFAS)
contamination
is
an
urgent
environmental
concern.
While
most
research
has
focused
on
PFAS
in
water
matrices,
comparatively
little
attention
been
given
to
sludge,
a
significant
by-product
of
wastewater
treatment.
This
critical
review
presents
the
latest
information
emission
sources,
global
distribution,
international
regulations,
analytical
methods,
and
remediation
technologies
for
sludge
biosolids
from
treatment
plants.
concentrations
matrices
are
typically
hundreds
ng/g
dry
weight
(dw)
developed
countries
but
rarely
reported
developing
least-developed
due
limited
capability.
In
comparison
samples,
efficient
extraction
cleaning
procedures
crucial
detection
samples.
regulations
have
mainly
soil
reuse,
only
two
set
limits
or
with
maximum
100
dw
major
PFAS.
Biological
using
microbes
enzymes
present
considered
as
having
high
potential
remediation,
they
eco-friendly,
low-cost,
promising.
By
contrast,
physical/chemical
methods
either
energy-intensive
linked
further
challenges
disposal.
The
findings
this
deepen
our
comprehension
guided
future
recommendations.
npj Sustainable Agriculture,
Год журнала:
2023,
Номер
1(1)
Опубликована: Окт. 4, 2023
Abstract
While
it
remains
debated
if
mineral
deposits
mined
for
phosphorus
fertilizer
are
running
out,
insecurity
is
an
emerging
global
issue.
We
explore
how
linked
to
the
current
linear
economy
(LPE)
and
historic
implications.
The
problems
multifold:
there
geopolitical
concerns
over
held
only
by
a
few
nations,
sharply
rising
costs
of
fertilizers,
heavy
metal
contaminants
affecting
soil
food,
problematic
mining
wastes,
environmental
degradation
caused
inefficiencies.
Here
we
argue
that
new
can
resolve
these
problems.
Transitioning
sustainable
use
demands
circular
(CPE).
A
CPE
supports
several
Sustainable
Development
Goals
enables
greater
autonomy.
illustrate
with
case
studies
outline
opportunities
change.
will
feature
recovery
facilities,
waste
valorisation
technologies,
improved
formulations
customized
target
crops
crop
systems.
highlight
examples
rapidly
advancing
essential
agriculture.
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
466, С. 133471 - 133471
Опубликована: Янв. 11, 2024
This
review
provides
a
comprehensive
overview
of
the
occurrence,
fate,
treatment
and
multi-criteria
analysis
microplastics
(MPs)
organic
contaminants
(OCs)
in
biosolids.
A
meta-analysis
was
complementarily
analysed
through
literature
to
map
out
occurrence
fate
MPs
10
different
groups
OCs.
The
data
demonstrate
that
(54.7%
rate)
linear
alkylbenzene
sulfonate
surfactants
(44.2%
account
for
highest
prevalence
In
turn,
dioxin,
polychlorinated
biphenyls
(PCBs)
phosphorus
flame
retardants
(PFRs)
have
lowest
rates
(<0.01%).
several
OCs
(e.g.,
per-
polyfluoroalkyl
substances,
polycyclic
aromatic
hydrocarbons,
pharmaceutical
personal
care
products,
ultraviolet
filters,
phosphate
retardants)
Europe
appear
at
higher
than
Asia
Americas.
However,
MP
concentrations
biosolids
from
Australia
are
reported
be
times
America
Europe,
which
required
more
measurement
in-depth
analysis.
Amongst
OC
groups,
brominated
exhibited
exceptional
sorption
with
partitioning
coefficients
(log
K
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(25), С. 11162 - 11174
Опубликована: Июнь 10, 2024
Thermal
treatment
has
emerged
as
a
promising
approach
for
either
the
end-of-life
or
regeneration
of
granular
activated
carbon
(GAC)
contaminated
with
per-
and
polyfluoroalkyl
substances
(PFAS).
However,
its
effectiveness
been
limited
by
requirement
high
temperatures,
generation
products
incomplete
destruction,
necessity
to
scrub
HF
in
flue
gas.
This
study
investigates
use
common
alkali
alkaline-earth
metal
additives
enhance
mineralization
perfluorooctanesulfonate
(PFOS)
adsorbed
onto
GAC.
When
treated
at
800
°C
without
an
additive,
only
49%
PFOS
was
mineralized
HF.
All
tested
demonstrated
improved
mineralization,
Ca(OH)2
had
best
performance,
achieving
efficiency
98%
air
N2.
Its
ability
increase
reaction
rate
shift
byproduct
selectivity
suggests
that
role
may
be
catalytic.
Moreover,
reduced
gas
instead
reacting
additive
form
inorganic
fluorine
(e.g.,
CaF2)
starting
waste
material.
A
hypothesized
mechanism
is
proposed
involves
electron
transfer
from
O2–
defect
sites
CaO
intermediates
formed
during
thermal
decomposition
PFOS.
These
findings
advocate
GAC
disposal
reuse,
potential
reduce
operating
costs
mitigate
environmental
impact
associated
incinerating
PFAS-laden
wastes.
Chemical Engineering Journal,
Год журнала:
2024,
Номер
493, С. 152537 - 152537
Опубликована: Май 24, 2024
Biosolids
(stabilised
sewage
sludge)
are
the
final
solid
residues
of
wastewater
treatment
process
and
generally
applied
on
agricultural
land
in
many
countries,
including
Australia.
Per-
polyfluoroalkyl
substances
(PFAS)
a
group
synthetic
fluorinated
chemicals
with
ubiquitous
applications
consumer
products
persist
environment.
Globally,
PFAS
have
been
detected
biosolids
considered
source
discharge
to
The
thermal
is
gaining
increasing
interest
water
sector.
Therefore,
viability
techniques
for
safe
destruction
has
received
substantial
research
attention
last
few
years.
Recent
studies
suggest
that
can
be
removed
potentially
destroyed
during
combustive
(such
as
incineration)
non-combustive
treatment,
such
pyrolysis,
gasification,
hydrothermal
carbonisation/liquefaction.
However,
there
limited
understanding
fate
transformation
degradation
across
overall
from
feed
pre-treatment
gas
cleaning
(post-thermal
treatment)
stage.
This
review
consolidates
current
knowledge
transformation,
destruction,
before,
during,
after
biosolids,
covering
lab,
pilot
scale,
industrial
studies.
It
suggested
mechanisms
may
differ
established
pathways
pure
salts,
given
complex
organic
inorganic
matrix
typically
low
concentrations.
Among
all
techniques,
pyrolysis
extensive
investigations
at
different
scales
operation.
temperatures
residence
time
need
sufficiently
optimised
designing
realistic
large-scale
systems
relevant
biosolids'
compositional
peculiarities
destruction.
