Industrial & Engineering Chemistry Research,
Год журнала:
2025,
Номер
64(9), С. 4694 - 4708
Опубликована: Фев. 24, 2025
Disposal
of
Cr(VI)
into
environments
without
adequate
pretreatment
from
various
industrial
wastes
has
detrimental
effects
on
human
health
that
range
skin
irritation
to
cancer
depending
the
dose
and
exposure
level.
Taking
this
consideration,
a
novel
Zeolite-A/Fe3O4/Biochar/MOF-5
(Z-A/Fe3O4/BC/MOF-5)
composite
was
synthesized
through
solvothermal
method
for
adsorption
wastewater.
The
phase
structure,
surface
area,
functional
group,
morphology,
elemental
composition
as-synthesized
adsorbent
were
characterized
by
using
XRD,
BET,
FT-IR,
SEM-EDX,
respectively.
batch
studied
optimizing
parameters.
maximum
efficiency
(95.12%)
capacity
(47.57
mg/g)
obtained
at
15
mg/L
initial
concentration,
0.3
g/L
dose,
120
min
contact
time,
pH
=
5,
isotherm
kinetic
Z-A/Fe3O4/BC/MOF-5
well
fitted
with
Freundlich
pseudo-second-order
models,
which
suggests
occurred
chemosorption
heterogeneous
adsorbent's
surface.
Furthermore,
recyclability
conducted
five
successive
runs
resulted
in
95.07,
89.59,
85.69,
71.74,
64.83%
first,
second,
third,
fourth,
fifth
runs,
quaternary
finally
tested
wastewater
concentration
36.27
collected
Batu
Tannery
Industry
PLC,
Ethiopia.
Interestingly,
shows
higher
performance,
92.85%
removal
efficiency,
much
than
its
pristine
MOF-5
(90.57%),
binary
Z-A/MOF-5
(83.05%),
ternary
Z-A/Fe3O4/BC
(82.83%)
composites.
This
could
be
due
synergic
effect
individual
materials
composite.
Consequently,
is
promising
Heliyon,
Год журнала:
2023,
Номер
9(12), С. e22447 - e22447
Опубликована: Ноя. 20, 2023
Methyl
orange
is
abundantly
present
in
wastewater
generated
from
textile
industries
causing
serious
human
health
and
environmental
problems.
Therefore,
this
study
was
aimed
at
preparing
a
low
cost
effective
biosorbent
the
stem
of
Rumex
abyssinicus
plant
for
removal
methyl
aqueous
solution.
Characterization
prepared
adsorbent
material
carried
out
using
pH
point
zero
charge,
Scanning
Electron
microscope
(SEM),
Fourier
Transform
Infrared
(FTIR)
spectroscopy
X-Ray
Diffraction
(XRD).
The
design
optimization
batch
adsorption
Box
Behnken
approach
to
Response
Surface
methodology
aiming
reduce
experimental
runs
time
with
adequate
results.
characterization
revealed
7.9
(pHpzc),
porous
heterogonous
surface
presence
multiple
functional
groups
amorphous
structure
maximum
efficiency
98.5
%
found
pH,
contact
time,
concentration
dosage
6,
60
min,
20
mg/L
0.2
g/100
mL
respectively.
isotherm
studies
were
Langmuir,
Freundlich,
Toth
Koble
Corrigan
models
which
Freundlich
R2
0.95
fit
data
best
showing
heterogeneous
multilayer
interaction.
On
other
hand,
kinetics
that
pseudo-second-order
fitted
best.
Moreover,
thermodynamics
analysis
showed
nature
be
endothermic,
spontaneous
feasible.
Generally,
work
proved
low-cost,
environmentally
friendly
easily
abyssinicus-based
could
an
alternative
dye
detoxification
industrial
scale.
Asian Journal of Chemistry,
Год журнала:
2023,
Номер
35(8), С. 1899 - 1906
Опубликована: Июль 31, 2023
The
chromium(VI)
ions
present
in
the
tannery
waste
was
efficiently
remove
by
using
silver-alumina
impregnated
maghemite/magnetite
nanocomposites
as
adsorbents.
as-synthesized
adsorbents
were
characterized
XRD,
SEM-EDAX,
HR-TEM
and
FT-IR
techniques.
adsorption
process
found
to
be
pH,
time,
dosage
of
adsorbent
temperature
dependent.
data
appropriate
well
with
pseudo-first-order
kinetics,
pseudo-second-order
kinetics
Langmuir
Freundlich
isotherms.
Among
two
synthesized
nanoabsorbents,
magnetite
(SAMG)
nanocomposite
most
effective
absorbent,
its
maximum
chromium
removal
efficiency
achieved
98.81%
within
2
h
at
a
pH
3.0
0.5
g/L.
Industrial & Engineering Chemistry Research,
Год журнала:
2025,
Номер
64(9), С. 4694 - 4708
Опубликована: Фев. 24, 2025
Disposal
of
Cr(VI)
into
environments
without
adequate
pretreatment
from
various
industrial
wastes
has
detrimental
effects
on
human
health
that
range
skin
irritation
to
cancer
depending
the
dose
and
exposure
level.
Taking
this
consideration,
a
novel
Zeolite-A/Fe3O4/Biochar/MOF-5
(Z-A/Fe3O4/BC/MOF-5)
composite
was
synthesized
through
solvothermal
method
for
adsorption
wastewater.
The
phase
structure,
surface
area,
functional
group,
morphology,
elemental
composition
as-synthesized
adsorbent
were
characterized
by
using
XRD,
BET,
FT-IR,
SEM-EDX,
respectively.
batch
studied
optimizing
parameters.
maximum
efficiency
(95.12%)
capacity
(47.57
mg/g)
obtained
at
15
mg/L
initial
concentration,
0.3
g/L
dose,
120
min
contact
time,
pH
=
5,
isotherm
kinetic
Z-A/Fe3O4/BC/MOF-5
well
fitted
with
Freundlich
pseudo-second-order
models,
which
suggests
occurred
chemosorption
heterogeneous
adsorbent's
surface.
Furthermore,
recyclability
conducted
five
successive
runs
resulted
in
95.07,
89.59,
85.69,
71.74,
64.83%
first,
second,
third,
fourth,
fifth
runs,
quaternary
finally
tested
wastewater
concentration
36.27
collected
Batu
Tannery
Industry
PLC,
Ethiopia.
Interestingly,
shows
higher
performance,
92.85%
removal
efficiency,
much
than
its
pristine
MOF-5
(90.57%),
binary
Z-A/MOF-5
(83.05%),
ternary
Z-A/Fe3O4/BC
(82.83%)
composites.
This
could
be
due
synergic
effect
individual
materials
composite.
Consequently,
is
promising
