Kinetic, Isothermal and Thermodynamic Study on the Removal of Hexavalent Chromium with Biocomposites (Cellulose–PLA)
Journal of Composites Science,
Год журнала:
2025,
Номер
9(1), С. 36 - 36
Опубликована: Янв. 14, 2025
Currently,
water
is
being
polluted
via
various
anthropogenic
activities,
resulting
in
wastewater
contaminated
with
multiple
pollutants,
including
heavy
metals.
Hexavalent
chromium
a
toxic
metal
that
poses
significant
health
risks
upon
exposure.
Biocomposites
are
materials
partially
composed
of
organic
substances
enhance
different
properties
composite.
The
aim
this
study
was
to
evaluate
the
kinetic,
isothermal,
and
thermodynamic
behaviour
cellulose-based
biocomposite
polylactic
acid
(PLA)
for
removal
Cr
(VI)
from
synthetic
water.
results
indicated
Freundlich
Elovich
models
provided
best
fit
isothermal
kinetic
data,
R2
values
0.671
0.973,
respectively,
suggesting
adsorption
process
chemical
nature
occurred
on
heterogeneous,
multilayer
surface.
Additionally,
analysis
revealed
exothermic,
irreversible,
non-spontaneous.
This
presents
an
innovative
approach
ions
using
cellulose–PLA
treatment,
offering
data
applicable
other
Язык: Английский
Investigation of Calcium Phosphate-Based Biopolymer Composite Scaffolds for Bone Tissue Engineering
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(24), С. 13716 - 13716
Опубликована: Дек. 22, 2024
We
present
a
novel
method
for
preparing
bioactive
and
biomineralized
calcium
phosphate
(mCP)-loaded
biopolymer
composite
scaffolds
with
porous
structure.
Two
types
of
polymers
were
investigated
as
matrices:
one
natural,
cellulose
acetate
(CA),
synthetic,
polycaprolactone
(PCL).
Biomineralized
particles
synthesized
via
wet
chemical
precipitation,
followed
by
the
addition
organic
biominerals,
such
magnesium
gluconate
zinc
gluconate,
to
enhance
bioactivity
pure
CP
phase.
compared
morphological
characteristics
two
composites
assessed
effect
biomineralization
on
particle
structure
CP.
The
precipitated
primarily
consisted
nanocrystalline
apatite,
trace
elements
significantly
influenced
morphology
reducing
size.
FE-SEM
elemental
mapping
confirmed
successful
incorporation
mCP
into
both
CA
PCL
polymer
matrices.
Short-term
immersion
tests
revealed
that
decomposition
rate
is
slow,
moderate
gradual
ionic
dissolution
observed
ICP-OES
measurements.
weight
loss
PCL-based
during
was
minimal,
decreasing
only
0.5%,
while
CA-based
initially
exhibited
slight
increase
before
gradually
over
time.
Язык: Английский