Molecules,
Год журнала:
2024,
Номер
29(24), С. 5969 - 5969
Опубликована: Дек. 18, 2024
Cellulose-based
sorbents
are
promising
materials
for
wastewater
treatment
due
to
their
environmental
friendliness,
biodegradability,
and
high
sorption
capacity.
This
paper
presents
an
overview
of
cellulose
modification
methods,
including
carboxylation,
amination,
oxidation,
graphene,
plasma
treatments,
as
well
combined
approaches.
Their
effect
on
key
physicochemical
properties,
such
porosity,
morphology,
chemical
stability,
is
considered.
Examples
from
the
literature
confirm
effectiveness
modified
in
removing
heavy
metal
ions
organic
pollutants
wastewater.
The
analysis
shows
that
methods
allow
creating
with
improved
characteristics
resistant
extreme
operating
conditions.
main
advantages
disadvantages
sorbents,
challenges
associated
scalability
cost-effectiveness,
discussed.
emphasizes
importance
further
research
advance
these
a
element
sustainable
water
technologies.
Abstract
In
the
present
study,
a
new
chelating
cellulosic
cotton
fiber
modified
with
ethylene
diamine
/
eriochrome
cyanine
r
(C‐EDA‐ECR)
has
been
synthesized
to
separate
Al
3+
from
matrix
of
coexisting
ions
in
aqueous
solutions
via
adsorption
process.
The
was
oxidized
by
periodate
give
dialdehyde
before
condensation
(EDA)
and
then
treated
(ECR).
successful
propagation
confirmed
firs
elemental
analysis.
Then
all
samples
were
analyzed
(SEM)
(FTIR),
N
2
physisorption,
(EDX).
Additionally,
adequate
conditions
needed
for
achieving
maximum
amount
onto
C‐EDA‐ECR
examined,
instance,
impact
solution
pH,
fiber,
initial
concentration
solution,
effect
changing
temperature
contact
time.
experiments
proved
that
loaded
on
surface
reached
48
mg/
g
under
ideal
working
conditions.
Chemical
suggested
as
rate‐limiting
step
after
2nd‐order
model
kinetic
studies.
As
well,
Langmuir
fit
isotherm
experiments.
ability
apply
proposed
method
some
real
containing
carried
out
results
are
auspicious.
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 10, 2025
ABSTRACT
The
adsorption
of
heavy
metals
in
wastewater
using
modified
cellulose
represents
an
environmentally
friendly
treatment
method.
In
this
research,
acrylamide
(AM)
and
acrylic
acid
(AA)
were
grafted
onto
alkali
wood
fiber
(AWF)
via
60
Co‐γ
irradiation
to
prepare
the
metal
adsorbent
AWF‐g‐(AM‐co‐AA).
This
grafting
method
is
efficient,
ecofriendly,
controllable,
widely
applicable.
Compared
with
monomer
graft
material
or
material,
binary
has
better
properties,
combining
advantages
both
monomers
while
reducing
dosage.
At
AM:AA
ratio
5:5,
rate
efficiency
AWF‐g‐(AM‐co‐AA)
reached
196.17%
58.85%,
respectively,
demonstrating
excellent
performance.
Further
optimization
revealed
that
8:2
achieved
highest
(232.97%)
(69.86%),
highlighting
flexibility
effectiveness
approach.
Key
parameters
such
as
time,
pH,
temperature
optimized,
mechanism
was
thoroughly
investigated.
optimal
volume
390
mg·g
−1
a
lead
ion
solution
initial
concentration
500
mg·L
.
These
results
highlight
promising
industrial
application
for
removal.
Inorganics,
Год журнала:
2024,
Номер
12(6), С. 148 - 148
Опубликована: Май 29, 2024
Lead
contamination
in
water
poses
significant
health
risks,
making
its
removal
imperative.
In
this
study,
magnetic
strontium
ferrite
(SrFe12O19)
nanoparticles
were
facilely
synthesized
by
the
Pechini
sol–gel
method
and
subsequently
functionalized
with
a
novel
chitosan–Schiff
base
ligand
to
obtain
inorganic/organic
nanocomposite
for
removing
Pb(II)
ions
from
aqueous
solutions.
The
was
through
reaction
of
chitosan
2,4,5-trihydroxybenzaldehyde.
presence
two
X-ray
diffraction
(XRD)
peaks
at
2Ɵ
=
10.5°
20.5°,
alongside
characteristic
SrFe12O19
peaks,
confirmed
functionalization
ligand.
Additionally,
decrease
saturation
magnetization
value
40.29
emu/g
pure
17.32
further
verified
functionalization.
carbon
(C)
nitrogen
(N)
atoms
energy-dispersive
(EDX)
pattern
nanocomposite,
addition
iron
(Fe),
(Sr),
oxygen
(O),
also
nanocomposite’s
maximum
adsorption
capacity
390.63
mg/g.
Moreover,
process
is
endothermic,
spontaneous,
chemical,
occurring
via
complexation
-C=N
-OH
groups,
it
fits
well
Langmuir
equilibrium
isotherm
pseudo-second-order
kinetic
equation.
