Agronomy,
Год журнала:
2024,
Номер
14(9), С. 2072 - 2072
Опубликована: Сен. 10, 2024
In
recent
years,
the
remediation
of
heavy
metal-contaminated
soils
has
attracted
great
attention
worldwide.
Previous
research
on
removal
toxic
metals
from
wastewater
effluents
through
adsorption
by
typical
solid
wastes
(e.g.,
fly
ash
and
coal
gangue)
mainly
focused
control
pollutants.
this
study,
a
gangue
(CG)
by-product
Hancheng
City
was
used
as
raw
material
to
prepare
polymeric
aluminum
chloride-loaded
gangue-based
porous
carbon
(PAC-CGPC)
hydrothermal
synthesis.
This
subsequently
employed
assess
its
performance
in
mitigating
Pb2+
soils.
addition,
effects
pore
structure
prepared
rates,
mechanisms,
plant
root
uptakes
soil
were
investigated
study.
The
CG
PAC-CGPC
materials
exhibited
specific
surface
areas
1.8997
152.7892
m2/g,
respectively.
results
kinetics
isotherms
indicate
that
based
follows
pseudo-second-order
kinetic
model,
suggesting
chemisorption
may
be
dominant
process.
isotherm
showed
Freundlich
model
explained
better
process
Pb2+,
suggests
sites
lead
ions
APC-CGPC
are
not
uniformly
distributed
tend
enriched
APC,
also
shows
ion
exchange
between
ions.
thermodynamic
fitting
demonstrated
occurrence
spontaneous
exothermic
PAC-CGPC-based
involving
complexation.
addition
soybean
plants
further
explored
pot
experiments.
revealed
substantial
decreases
contents
organs
(roots,
stems,
leaves)
following
at
dose
3%
compared
with
groups.
Furthermore,
effectively
reduced
bioavailable
content
82.11
enhanced
growth
15.3%.
These
findings
inhibition
effect
translocation
seedlings.
modified
adsorbent
highly
good
hydrophilicity,
making
it
prone
migration
unsaturated
and,
consequently,
enhancing
immobilization.
provides
theoretical
support
for
development
CG-based
capable
immobilizing
Advanced Healthcare Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
Porous
polymers,
including
hydrogels,
covalent
organic
frameworks
(COFs),
and
hyper
crosslinked
polymers
(HCPs),
have
become
essential
in
biomedical
research
for
their
tunable
pore
architectures,
large
surface
areas,
functional
versatility.
This
review
provides
a
comprehensive
overview
of
classification
updated
synthesis
mechanisms,
such
as
3D
printing,
electrospinning,
molecular
imprinting.
Their
pivotal
roles
drug
delivery,
tissue
engineering,
wound
healing,
photodynamic/photothermal
therapies,
focusing
on
how
size,
distribution,
architecture
impact
release,
cellular
interactions,
therapeutic
outcomes,
are
explored.
Key
challenges,
biocompatibility,
mechanical
strength,
controlled
degradation,
scalability,
critically
assessed
alongside
emerging
strategies
to
enhance
clinical
potential.
Finally,
recent
challenges
future
perspectives,
emphasizing
the
broader
applications
porous
addressed.
work
valuable
insights
advancing
next-generation
innovations
through
these
materials.
Frontiers in Microbiology,
Год журнала:
2025,
Номер
16
Опубликована: Апрель 11, 2025
Silicon-iron-modified
biochars
(SMBCs)
were
produced
to
remediate
paddy
soil
contaminated
with
both
cadmium
(Cd)
and
arsenic
(As).
This
study
explored
the
effects
of
SMBCs
on
transformation
Cd
As
species
in
associated
responses
functional
genes
elucidate
remediation
mechanisms.
Three
silicon-iron
modified
utilized.
(i)
Silicon
dioxide
magnetic
biochar
(SMBC1),
(ii)
Calcium
silicate
(SMBC2),
(iii)
Sodium
(SMBC3)
applied
soil.
increased
pH
concentration
dissolved
organic
carbon
(DOC)
by
0.42-0.54
units
6.6-16.39%,
respectively.
SMBC
treatments
reduced
bioavailable
concentrations
29.09-73.63%
1.67-8.37%,
respectively,
transforming
As(III)
into
less
toxic
As(V)
stabilizing
soluble
a
more
inert
residual
form.
Compared
control,
significantly
2.94-16.17%
(p
<
0.05)
11.42-26.07%
0.05).
Adding
calcium
(CaSiO3)
at
mass
ratio
5%
resulted
0.79
mg·kg-1
(an
increase
16.86%)
an
37.89
mg·kg-1.
enhanced
porosity,
microbial
aioA
genes,
sulfate-reducing
bacteria,
facilitating
oxidation
As(III).
Magnetic
amended
(SMBC2)
demonstrated
superior
efficacy
addressing
co-contamination
As.
The
mechanisms
include
following:
decrease
(DOC),
gene
activity,
promoting
As(V),
dissimilatory
sulfite
reductase
beta
subunit
(DsrB)
reduction
sulfate
ion
(SO4
2-)
sulfide
(S2-),
leading
formation
(CdS)
precipitates
additional
precipitation
involving
Fe.
These
results
highlight
potential
silicate-modified
as
effective
additive
for
co-contaminated
soils,
providing
insights
heavy
metals'
stabilization
Toxics,
Год журнала:
2024,
Номер
12(11), С. 765 - 765
Опубликована: Окт. 22, 2024
Magnetite-loaded
biochar
has
recently
received
attention
owing
to
its
ability
remove
arsenic
from
contaminated
soil.
In
this
study,
mulberry
stem
(MBC)
and
Fe
Agronomy,
Год журнала:
2024,
Номер
14(9), С. 2072 - 2072
Опубликована: Сен. 10, 2024
In
recent
years,
the
remediation
of
heavy
metal-contaminated
soils
has
attracted
great
attention
worldwide.
Previous
research
on
removal
toxic
metals
from
wastewater
effluents
through
adsorption
by
typical
solid
wastes
(e.g.,
fly
ash
and
coal
gangue)
mainly
focused
control
pollutants.
this
study,
a
gangue
(CG)
by-product
Hancheng
City
was
used
as
raw
material
to
prepare
polymeric
aluminum
chloride-loaded
gangue-based
porous
carbon
(PAC-CGPC)
hydrothermal
synthesis.
This
subsequently
employed
assess
its
performance
in
mitigating
Pb2+
soils.
addition,
effects
pore
structure
prepared
rates,
mechanisms,
plant
root
uptakes
soil
were
investigated
study.
The
CG
PAC-CGPC
materials
exhibited
specific
surface
areas
1.8997
152.7892
m2/g,
respectively.
results
kinetics
isotherms
indicate
that
based
follows
pseudo-second-order
kinetic
model,
suggesting
chemisorption
may
be
dominant
process.
isotherm
showed
Freundlich
model
explained
better
process
Pb2+,
suggests
sites
lead
ions
APC-CGPC
are
not
uniformly
distributed
tend
enriched
APC,
also
shows
ion
exchange
between
ions.
thermodynamic
fitting
demonstrated
occurrence
spontaneous
exothermic
PAC-CGPC-based
involving
complexation.
addition
soybean
plants
further
explored
pot
experiments.
revealed
substantial
decreases
contents
organs
(roots,
stems,
leaves)
following
at
dose
3%
compared
with
groups.
Furthermore,
effectively
reduced
bioavailable
content
82.11
enhanced
growth
15.3%.
These
findings
inhibition
effect
translocation
seedlings.
modified
adsorbent
highly
good
hydrophilicity,
making
it
prone
migration
unsaturated
and,
consequently,
enhancing
immobilization.
provides
theoretical
support
for
development
CG-based
capable
immobilizing
