This
work
synthesized
poly
ethanolamine
amidoxime
modified
winter
melon
and
chitosan-derived
biochar
(PEA-CTS@WBC)
using
chemical
crosslinking
method
for
uranium(VI)
removal.
The
factors
influencing
adsorption
by
PEA-CTS@WBC,
including
pH,
adsorbent
dosage,
time,
temperature,
initial
U(VI)
concentration
were
explored.
material's
performance
was
characterized,
the
underlying
mechanism
of
removal
analyzed
various
techniques.
results
demonstrated
that
PEA-CTS@WBC
effectively
removed
U(VI),
achieving
a
maximum
capacity
485.89
mg
g-1
at
pH
5.0.
dynamics
studies
showed
more
in
line
with
second-order
kinetic
model,
indicating
main
process.
XPS
analysis
process
primarily
due
to
formation
stable
complexes
NH3+-C(O),
N-C,
C-N,
C=C,
O-H
C=O.
research
introduction
amide
groups
significantly
improved
effect
biochar-chitosan
gels
on
U(VI).
had
high
selective
characteristics
good
reusability
aqueous
solutions.
an
economical,
efficient
composite
material.
These
findings
provided
theoretical
basis
treatment
wastewater
contaminated
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
477, С. 135230 - 135230
Опубликована: Июль 17, 2024
In
some
locations
around
the
globe,
U
concentrations
may
exceed
WHO
standards
by
2-folds
therefore,
effective
yet
environmentally
wise
solutions
to
purify
radioactive
waters
are
of
significant
importance.
Here,
optimized
and
fully
controlled
coal-fly-ash
based
Na-P1
zeolite
functionalization
employing
novel,
biodegradable
biosurfactant
molecule
-
cocamidopropyl
betaine
(CAPB)
is
showcased.
The
zeolite's
surface
decoration
renders
three
composites
with
varying
amounts
introduced
CAPB
(Na-P1
@
CAPB),
0.44,
0.88,
1.59-times
External
Cation
Exchange
Capacity
(ECEC).
Wet-chemistry
experiments
revealed
extremely
high
adsorption
capacity
(q
