Sustainability,
Journal Year:
2025,
Volume and Issue:
17(6), P. 2759 - 2759
Published: March 20, 2025
Simultaneously
stabilizing
cadmium,
lead,
and
arsenic
in
contaminated
soils
is
challenging
due
to
their
significant
differences
physical
chemical
properties.
This
study
developed
a
composite
material
by
modifying
hydrochar
with
iron
(Fe),
phosphorus
(P),
sulfur
(S)
address
this
issue.
The
iron–phosphorus–thiol-modified
Trachycarpus
fortunei
(H-PAL-Fe2-P-T)
effectively
stabilized
these
metals.
Experimental
results
showed
that
the
H-PAL-Fe2-P-T
achieved
over
90%
stabilization
for
DTPA-extracted
arsenic.
Characterization
XRD,
SEM,
FTIR
revealed
structural
functional
changes
hydrochar.
Column
leaching
tests
simulating
acid
rain
maintained
stable
effects,
fluctuations
rates
remaining
below
20%.
Additionally,
composite-modified
enhanced
of
water-soluble,
DTPA-extracted,
TCLP-extracted
heavy
metals
soil,
demonstrating
good
stability
durability
long-term
use.
These
findings
suggest
Fe-,
P-,
S-modified
promising
sustainable
approach
remediation
ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(16)
Published: April 1, 2025
Abstract
Industries
frequently
discharge
elevated
levels
of
lead
and
cadmium
into
the
environment,
posing
significant
threats
to
ecological
balance
public
health.
This
study
developed
a
novel
polycaprolactone–chitosan–montmorillonite
(PCL/CS/MMT)
composite
adsorb
Pb(II)
Cd(II)
from
aqueous
solutions.
The
was
synthesized
via
twin‐screw
melt
extrusion
subsequently
characterized
using
X‐ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
energy‐dispersive
spectroscopy
(EDS),
Fourier
transform
infrared
(FTIR),
thermogravimetric
analysis
(TGA),
revealing
crystalline
structure,
cracked
surface
morphology,
functionalized
groups,
thermal
stability.
Under
optimal
batch
conditions,
adsorbent
achieved
maximum
adsorption
capacities
12.35
mg/g
for
16.92
Cd(II).
Adsorption
behavior
followed
Langmuir
isotherm
model,
kinetic
data
aligned
with
pseudo
second‐order
indicating
chemisorption‐driven
mechanism.
demonstrated
effective
regeneration,
retaining
over
55%
efficiency
after
seven
desorption
cycles
0.1
M
(pH
8).
These
findings
position
PCL/CS/MMT
as
promising,
sustainable
wastewater
treatment,
offering
viable
solution
heavy
metal
pollution
advancing
development
eco‐friendly
materials
environmental
remediation.
Materials,
Journal Year:
2024,
Volume and Issue:
17(5), P. 1168 - 1168
Published: March 1, 2024
Acid
mine
drainage
(AMD)
is
a
major
environmental
problem
caused
by
the
release
of
acidic,
toxic,
and
sulfate-rich
water
from
mining
sites.
This
study
aimed
to
develop
novel
adsorbents
for
removal
chromium
(Cr(VI)),
cadmium
(Cd(II)),
lead
(Pb(II))
simulated
actual
AMD
using
hybrid
ion-exchange
resins
embedded
with
hydrous
ferric
oxide
(HFO).
Two
types
were
synthesized:
anionic
exchange
resin
(HAIX-HFO)
Cr(VI)
cationic
(HCIX-HFO)
Cd(II)
Pb(II)
removal.
The
characterized
scanning
electron
microscopy
Raman
spectroscopy,
which
confirmed
presence
HFO
particles.
Batch
adsorption
experiments
conducted
under
acidic
sulfate-enhanced
conditions
evaluate
capacity
kinetics
resins.
It
was
found
that
both
exhibited
high
efficiencies
fast
rates
their
respective
metal
ions.
To
explore
potential
on
AMD,
HCIX-HFO
demonstrated
significant
some
saturated
regenerated
NaCl,
amount
adsorbed
recovered.
demonstrates
HFO-embedded
are
promising
treating
contaminated
heavy
metals.
Environmental Pollutants and Bioavailability,
Journal Year:
2024,
Volume and Issue:
36(1)
Published: Aug. 14, 2024
Chromium
exists
from
both
natural
geological
processes
and
human
actions,
it
has
a
substantial
impact
on
health
ecosystems.
This
study
addresses
the
major
challenges
in
using
biochar
as
an
environmentally
friendly,
sustainable,
economical
sorbent
for
removing
chromium
hexavalent
throughout
remediation
process.
The
results
exhibited
that
produced
non-woody
feedstocks
pyrolyzed
at
(300°C
−700°C)
significantly
large
amount
of
various
functional
groups,
higher
pH
(7
to
11.10)
CEC
(27
21.70
cmol
kg−1),
greater
surface
area
(2–300
m2g−1),
O/C
H/C
ratios
with
increasing
carbonization
temperature,
adsorption
capacities
(1.63
435
mg
g)
superior
performance
removal
compared
biochars
woody-biomass.
use
equilibrium
isotherm,
thermodynamic,
kinetic
models
aids
comprehending
interactions
between
biochar,
well
their
processes.
International Journal of Phytoremediation,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 14
Published: Sept. 27, 2024
The
release
of
hazardous
hexavalent
chromium
from
chromite
mining
seriously
threatens
habitats
and
human
health
by
contaminating
water,
air,
soil.
Vulnerability
to
can
result
in
significant
risks,
