Recovery of Au(III) from electronic waste using solid phase extraction based on a magetic nanobiocomposite, OCBS@Fe3O4 @UiO-66-SH
Parisa Poormoghadam,
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Soleiman Bahar,
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Yunes Naghdi
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et al.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 21, 2025
Abstract
This
study
created
a
zirconium-based
MOF
(UiO-66-NH
2)
with
thiol
groups
attached
to
its
magnetic
corn
surface
for
adsorption
and
extraction
of
Au(III)
from
electronic
waste.
Characterization
the
composite
was
verified
using
FTIR,
XRD,
FESEM,
TGA
BET
techniques.
The
temperature,
period,
pH
on
were
investigated.
solutions
significantly
impacts
adsorption,
6.0
being
optimal
value.
optimum
conditions
50
◦C,
40
min,
10
mg
adsorbent.
Moreover,
functionalized
oxidized
corncobs
(OCBS@Fe
3O
4@UiO-66-SH)
showed
notable
ability
adsorb
1587
mg/g
capacity.
With
mass
ratios
competing
ions
(Mg,
Mn,
Cu,
Zn,
Co,
Cd,
Ni)
fixed
at
1:1
or
extended
1:5,
this
adsorbent
prefers
while
showing
negligible
other
ions.
validated
technique
extracting
various
waste
samples,
achieving
high
recovery
rates
(95.30–104.75%),
demonstrating
effectiveness
lack
matrix
interference.
Langmuir,
Freundlich,
Temkin
isotherm
models
used
describe
process.
Comparing
models,
Langmuir
model
most
excellent
R
2
value
is
best
interpreting
experimental
data.
Among
three
kinetic
pseudo-first-order
(PFO),
pseudo-second-order
(PSO)
kinetic,
interparticle
diffusion
(ID)
PFO
exhibited
(0.9976).
Thermodynamic
calculations
reveal
positive
Δ
H°,
indicating
endothermic
process,
negative
Δ
G°
values
representing
spontaneous
298–323
K.
Δ
S°
shows
that
adsorbed
molecules
are
more
uniformly
dispersed
surface,
potentially
enhancing
Language: Английский
Cadmium Toxicity in Children and Its Detection Using Colorimetric and Fluorimetric Methods
Journal of Fluorescence,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Language: Английский
Hexavalent chromium dual water remediation and sensing based on hybrid polymer/metal-organic framework composites
Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(5), P. 113839 - 113839
Published: Aug. 15, 2024
Language: Английский
Adsorption Performance for Chromium(VI) of a UiO-66-Ce Metal–Organic Framework Built by DL-Aspartic Acid
Xiaoyi Lin,
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Sabrina Yanan Jiang,
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Gang Li
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et al.
Materials,
Journal Year:
2024,
Volume and Issue:
17(21), P. 5293 - 5293
Published: Oct. 30, 2024
Metal–organic
frameworks
(MOFs)
have
recently
received
a
lot
of
interest
for
their
use
in
adsorbing
and
eliminating
hexavalent
chromium
from
water.
Obtaining
low-cost,
biocompatible,
environmentally
friendly
MOFs
research
this
field
is
vital.
One
very
stable
three-dimensional
UiO-66-Ce(IV)
MOF,
Ce-asp,
was
synthesized
with
high
yield
using
an
amino
acid
ligand,
DL-aspartic
acid.
As
result,
the
adsorption
characteristics
MOF
against
ions
aqueous
solution
were
examined.
The
effects
time,
pH,
dose,
beginning
chromium(VI)
content
investigated
on
adsorption.
More
crucially,
mechanism
proposed,
setting
groundwork
its
future
removal
real-world
waters.
Language: Английский