Water,
Journal Year:
2025,
Volume and Issue:
17(9), P. 1316 - 1316
Published: April 28, 2025
The
adsorption
of
Fe(III)
onto
the
surface
microplastics
(MPs)
enhances
their
toxicity
and
mobility
in
aquatic
environments,
posing
a
serious
threat
to
human
health
ecosystem
balance.
This
study
investigated
mechanism
influencing
factors
on
three
types
MPs
with
varying
particle
sizes
aging
degrees
using
batch
experiments
freshwater
saltwater.
Machine
learning
(ML)
techniques
were
employed
predict
capacity
conduct
attribution
analysis.
results
showed
that
both
saltwater
followed
Pseudo-First-Order
kinetics
Langmuir
isotherms,
indicating
monolayer
homogeneous
physical
reaction
driven
by
oxygen-containing
functional
groups,
hydrogen
bonds
aromatic
rings
MP
surface.
for
was
higher
than
saltwater,
positively
correlated
degree
pH
value,
but
negatively
size.
Among
tested
ML
models,
Random
Forest
Gaussian
Process
Regression
models
Bayesian
Optimization
performed
well
predicting
capacity,
value
identified
as
key
based
SHAP
conducted
comprehensive
investigation
behavior
between
water,
providing
valuable
insights
risk
assessment
prevention
pollution
environments.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
The
development
of
cost-effective
wastewater
treatment
technologies
is
imperative
for
heavy
metal
pollution
mitigation,
which
presents
considerable
risks
to
water
supplies,
ecosystems,
and
human
health.
In
this
context,
polyacrylonitrile/polyethylenimine
porous
microspheres
(PAN/PEI
PM)
were
synthesized
through
a
dual-phase
strategy
combining
polymer
crystallization
vapor-induced
phase
separation,
leading
effective
removal
hexavalent
chromium
(Cr(VI))
from
wastewater.
PAN/PEI
PM,
characterized
by
substantial
number
amino
groups
relatively
uniform
particle
size
ranging
1.3
1.7
μm,
demonstrated
commendable
thermal
stability,
high
specific
surface
area
(93.5
m2/g),
pore
volume
0.7
cm3/g.
Furthermore,
the
PM
exhibited
significantly
enhanced
Cr(VI)
adsorption
efficiency,
achieving
levels
up
194.5
mg/g.
Even
after
five
cycles,
they
consistently
maintained
efficiency
exceeding
64%,
with
an
capacity
still
reaching
125.6
isotherm
kinetics
found
correlate
well
Langmuir
pseudo-second-order
models,
respectively.
Adsorption
experiments
that
effectively
remove
primarily
complexation
electrostatic
interactions,
attributed
elevated
concentration
ionizable
functional
(NH2)
within
microsphere
structure.
Additionally,
redox
processes
are
predominantly
reliant
on
reduction
adsorbed
Cr(III).
These
findings
underscore
favorable
characteristics
reusability
offering
valuable
insights
more
sustainable
strategies
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
295, P. 118138 - 118138
Published: April 1, 2025
Microplastics
are
ubiquitously
distributed
and
persistently
present
in
soil-water
systems,
posing
potential
ecological
health
risks
worldwide.
Free
radicals
highly
reactive
particularly
at
soil-water-air
interface.
The
dynamic
changes
of
free
sensitive
to
environmental
conditions
may
greatly
impact
the
fate
microplastics.
However,
pathways,
reaction
kinetics,
or
transformation
products
microplastic
degradation
by
systems
remains
unclear.
Climate
change
alters
physical
chemical
environment
this
can
directly
affect
microplastics,
indirectly
influence
it
altering
generation
species
radicals.
Here,
we
summarized
analyzed
fluctuations
(such
as
superoxide
radicals,
hydrogen
peroxide,
peroxyl
hydroxyl
radicals)
on
microplastics
their
derivants.
We
also
discussed
how
driven
climate
By
integrating
aspects
such
change,
radical
chemistry,
pollution,
work
delineates
critical
issues
pollution
exacerbated
condition
changes.
In
response
existing
challenges
deficiencies
current
research,
feasible
countermeasures
proposed.
This
offers
valuable
insights
for
future
research
predicting
controlling
ecotoxicity
caused
associated
with
global
change.
Marine Pollution Bulletin,
Journal Year:
2025,
Volume and Issue:
216, P. 118035 - 118035
Published: April 25, 2025
Plastic
pollution
in
coastal
environments
poses
ecological
risks,
yet
long-term
monitoring
data
and
insights
into
the
impacts
of
extreme
weather
events
remain
limited.
This
study
examines
spatiotemporal
distribution
microplastics
mesoplastics
on
sandy
beaches,
with
a
focus
trends
influence
typhoons.
Samples
were
collected
from
two
beaches
northern
Taiwan
over
20-month
period,
spanning
8-9
sampling
sessions
per
site.
A
dense
grid
approach
(50
×
50
cm
quadrats)
was
used
across
three
transects.
Post-typhoon
microplastic
abundances
peaked
at
5080.6
pcs/kg
dry
weight
(d.w.)
Xialiao
Beach,
where
average
concentration
115.3
d.w.,
compared
to
18.1
d.w.
Longmen
Beach.
Typhoon
increased
plastic
particle
accumulation,
primarily
along
storm
lines
backshore
areas,
but
accumulation
not
observed,
indicating
dynamic
deposition
removal
processes.
These
findings
emphasize
need
for
through
repeated
campaigns
conducted
an
extended
high-resolution
using
grid,
accurately
assess
pollution.
Single-event
studies
risk
misrepresenting
levels
due
spatial
temporal
variability.
