Minerals,
Journal Year:
2023,
Volume and Issue:
13(12), P. 1534 - 1534
Published: Dec. 10, 2023
Cadmium
(Cd)
is
one
of
the
most
toxic
transition
metals
for
living
organisms.
Thus,
effective
measures
to
remediate
Cd
from
water
and
soils
need
be
developed.
immobilization
by
alumina
mixtures
smectite
have
been
analyzed
experimentally
theoretically
sorption
experiments
modelling,
respectively.
Removal
aqueous
was
dependent
on
pH
concentration,
being
maximal
>
7.5.
A
two-site
non-electrostatic
model
developed
it
successfully
reproduced
experimental
alumina.
were
depending
pH,
ionic
strength,
content
in
mixture.
removal
increased
with
at
high
strength
values.
However,
decreased
increasing
under
acidic
conditions
low
strength.
This
effect
result
dissolution
release
Al3+
into
suspension
Modelling
performed
considering
individual
models
smectite.
It
could
shown
that
contributions
additive
when
competition
Cd2+
cation
exchange
sites
included.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(25), P. 11063 - 11073
Published: June 13, 2024
Rhizosphere
iron
plaques
derived
from
Fe-based
nanomaterials
(NMs)
are
a
promising
tool
for
sustainable
agriculture.
However,
the
requirement
flooded
conditions
to
generate
plaque
limits
scope
of
NM
application.
In
this
study,
we
achieved
in
situ
Fenton
oxidation
highly
chlorinated
persistent
organic
pollutant
(2,2′,4,5,5′-pentachlorobiphenyl,
PCB101)
through
mediated
by
interaction
between
α-Fe2O3
NMs
and
plant-rhizobacteria
symbionts
under
dryland
conditions.
Mechanistically,
coexistence
Pseudomonas
chlororaphis
JD37
stimulated
alfalfa
roots
secrete
acidic
reductive
agents
as
well
H2O2,
which
together
rhizosphere
reaction
converted
into
rich
Fe(II)-silicate.
Further
verifications
reproduced
vitro
using
compounds,
confirming
critical
role
•OH
oxidative
degradation
PCB101.
Significant
reductions
PCB101
content
18.6%,
42.9%,
23.2%
were
respectively
found
stem,
leaf,
soil
after
120-d
treatment,
proving
effectiveness
NMs-plant-rhizobacteria
technique
simultaneously
safe
crop
production
remediation.
These
findings
can
help
expand
potential
applications
nanobio
its
generation
both
agricultural
practice
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(39), P. 17283 - 17294
Published: July 27, 2024
Biogeochemical
processes
of
atmospherically
deposited
cadmium
(Cd)
in
soils
and
accumulation
rice
were
investigated
through
a
three-year
fully
factorial
atmospheric
exposure
experiment
using
Cd
stable
isotopes
diffusive
gradients
thin
films
(DGT).
Our
results
showed
that
approximately
37-79%
grains
was
contributed
by
deposition
root
foliar
uptake
during
the
growing
season,
while
accounted
for
small
proportion
soil
pools.
The
highly
bioavailable
metals
significantly
increased
DGT-measured
fraction;
yet,
this
fraction
rapidly
aged
following
first-order
exponential
decay
model,
leading
to
similar
percentages
exposed
1-3
years.
enrichment
light
resulted
significant
shift
toward
lighter
plants.
Using
modified
isotopic
mass
balance
47-51%
28-36%
leaves,
41-45%
22-30%
stems,
45-49%
26-30%
grains,
respectively.
implications
study
are
new
disproportionately
contributes
rice,
managing
emissions
thus
becomes
very
important
versus
remediation
impacted
soils.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(43), P. 19408 - 19418
Published: Oct. 16, 2024
Phytoremediation
efficiency
can
be
enhanced
by
regulating
rhizosphere
processes,
and
the
Cd
isotope
is
a
useful
approach
for
deciphering
transport
processes
in
soil-plant
systems.
However,
effects
of
adsorption
complexation
on
fractionation
during
remain
unclear.
Here,
we
cultivated
hyperaccumulator
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
293, P. 118032 - 118032
Published: March 1, 2025
Light
is
a
critical
factor
influencing
algal
growth
and
contributes
to
the
uptake
of
metal
elements
by
algae.
However,
impact
light
on
bioavailability
transformation
heavy
metals
requires
further
exploration,
particularly
in
context
bioremediation
efforts.
This
study
explores
how
varying
intensities
(1000,
2000,
3000
lux)
influence
ability
these
algae
absorb
Cd,
distribute
it
within
cells,
transform
Cd
(II)
into
CdS
NPs.
By
using
ICP-MS,
was
found
that
increasing
intensity
2000
lux
could
increase
capacity
Dunaliella
salina
Phaeodactylum
tricornutum
28
%
14
%,
respectively.
Changes
percentage
each
component
(medium,
intracellular,
adsorption
cell
surface)
with
different
supported
interpretation
cells
result
increased
cellular
accumulation.
Further
analyses
HRTEM-EDS
SEC-ICP-MS
showed
not
only
influenced
size
NPs
but
also
significantly
enhanced
algae's
efficiency
transforming
Cd(II)
It
ratio
D.
P.
16
52
respectively,
after
10
days
exposure
under
intensity.
These
findings
underscore
significance
as
an
environmental
algae,
profound
implications
for
its
application
bioremediation.
