Synthesis, characterization and biocompatibility of hybrid hydrogels based on alginate, κ-carrageenan, and chitosan filled with montmorillonite clay
International Journal of Biological Macromolecules,
Год журнала:
2024,
Номер
278, С. 134703 - 134703
Опубликована: Авг. 14, 2024
New
hybrid
hydrogel
composites
based
on
a
mixture
of
natural
polysaccharides
(sodium
alginate,
κ-carrageenan,
and
chitosan)
filled
with
the
clay
mineral
origin,
montmorillonite
(MMT),
were
studied.
The
structure
intercalated/flocculated
MMT
distribution
in
interpenetrating
network
polysaccharide
matrix
was
characterized
using
FTIR,
X-ray
diffraction,
SEM
techniques.
Swelling
kinetics
investigated
weight
analysis,
whereas
phase
transition
water
composition
hydrogels,
by
DSC
method.
Their
biosafety
estimated
Nelyubov
method,
germination
test
cress
(L.
sativum)
seeds,
metabolic
fingerprinting
microbial
communities
dehydrogenase
assay.
obtained
results
indicated
promising
water-retaining
properties
synthesized
materials.
hydrogels
had
good
sorption
affinity
for
cadmium
(Cd)
ions
confining
bioavailability
selected
toxic
heavy
metal.
They
safe
soil
microorganisms
did
not
generate
stress
them.
Moreover,
they
reduce
viability
pea
seeds.
Thus,
development
biosafe
comprehensive,
effect
environment
could
be
considered
as
successful.
Язык: Английский
Management of the soil environment using biochar and zeolite in various combinations: impact on soil condition and economical aspects
Journal of Soils and Sediments,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 26, 2024
Abstract
Purpose
Both
biochars
(BCs)
and
zeolites
(Zs)
are
defined
as
soil
conditioners
affecting
various
parameters
of
environment.
In
most
cases,
BCs
Zs
characterized
by
well-developed
specific
surface
area,
high
porosity,
excellent
sorption
properties,
which
is
highly
helpful
in
reclamation
or
conditioning.
This
literature
review
compares
impact
on
the
physicochemical
properties
soils
well
economic
aspects
their
synthesis.
Materials
methods
The
was
prepared
based
articles
published
last
5
years
(2018–2023).
were
selected
from
ScienceDirect®
database
using
keywords:
‘biochar/zeolite
properties’,
water
retention
soil’
aspects’.
Results
discussion
Based
available
data,
it
can
be
stated
that
both
have
good
sorptive
usually
contributes
to
better
growth
crops.
Comparing
them
choosing
one
more
promising
depends
purpose
type
they
applied.
usage
mainly
providing
organic
matter
improving
structure,
while
enhance
retention.
profitability
BCs/Zs
production
largely
precursor
synthesis
method.
Conclusions
Due
fact
synthetic
environment
much
less
frequently
investigated
than
BCs,
research
types
especially
needed.
some
advisable
apply
biochar
(BC)
zeolite
(Z)
simultaneously.
Combinations
these
materials
may
provide
benefits
retention,
fertility.
Such
mixed
techniques
should
near
future.
Язык: Английский
Composites Based on Natural Zeolites and Green Materials for the Immobilization of Toxic Elements in Contaminated Soils: A Review
Materials,
Год журнала:
2024,
Номер
17(23), С. 5977 - 5977
Опубликована: Дек. 6, 2024
Soil
contamination
by
toxic
elements
is
a
global
problem,
and
the
remediation
of
contaminated
soils
requires
complex
time-consuming
technology.
Conventional
methods
soil
are
often
inapplicable,
so
an
intensive
search
underway
for
innovative
environmentally
friendly
ways
to
clean
up
ecosystems.
The
use
amendments
that
stabilize
in
reducing
their
mobility
bioavailability
one
simplest
most
cost-effective
remediate
soil.
This
paper
provides
summary
studies
related
composites
based
on
natural
zeolites
green
materials
immobilization
highlights
positive
examples
returning
land
agricultural
use.
published
literature
has
shown
combinations
zeolite
with
biochar,
chitosan
other
clay
minerals
have
beneficial
synergistic
effects
element
quality.
properties,
different
combinations,
application
rates,
or
incubation
periods
were
tested
laboratory
scale
field
experiments,
whereas
was
evaluated
chemical
extractions
transferred
plants.
review
excellent
potential
be
used
as
single
combined
sustainable
solve
environmental
pollution
problems
presence
elements.
Язык: Английский