Water Practice & Technology,
Journal Year:
2023,
Volume and Issue:
18(12), P. 3255 - 3270
Published: Nov. 17, 2023
Abstract
The
present
study
investigated
the
use
of
oak
charcoal-based
activated
carbon
(OC-AC)
as
an
adsorbent
for
removal
methylene
blue
(MB)
dye
from
aqueous
solutions.
examined
effects
key
operational
variables,
including
pH,
equilibrium
time,
dosage,
and
initial
concentration.
results
showed
that
pH
had
no
significant
effect
on
MB
adsorption
concentration
below
50
mg
L−1
dosage
1
g
L−1,
but
increasing
contact
time
improved
efficiency.
For
instance,
at
percentage
increased
76
to
99.9%,
with
0.5
3
L−1.
In
addition,
5
300
min,
45.43
87.42%.
also
analyzed
kinetics
isotherm
behavior
found
Avrami
fractional
order
kinetic
model
Freundlich
provided
best
fit
experimental
data.
real
water
samples
OC-AC
could
be
used
efficient
environmentally
friendly
removing
contaminated
effluents
ranging
83
97%.
Polish Journal of Environmental Studies,
Journal Year:
2023,
Volume and Issue:
32(5), P. 4073 - 4082
Published: July 12, 2023
A
low-cost
modified
soybean
straw
activated
carbon
(M-SSAC)
adsorbent
was
prepared
from
for
the
methylene
blue
(MB)
adsorption
dye
wastewater.The
effects
of
pH,
dosage,
initial
MB
concentration,
and
time
on
were
investigated
by
response
surface
methodology
(RSM),
experimental
conditions
optimized.The
results
showed
that
dosage
had
most
significant
effect
capacity
adsorbed
M-SSAC.The
best
achieved
at
pH
6.6,
an
0.05
g,
concentration
190
mg/L,
110
min,
with
average
41.96
mg/g
error
1.19%
predicted
value.This
result
indicated
optimized
based
method
are
accurate
reliable.Compared
Freundlich
model,
Langmuir
model
more
suitable
modeling
process
consistent
Pseudo-second-order
kinetics,
thermodynamic
calculations
a
spontaneous
heat
absorption
process.The
suggest
M-SSAC
is
promising
effectively
removing
wastewater.
Water Practice & Technology,
Journal Year:
2023,
Volume and Issue:
18(12), P. 3255 - 3270
Published: Nov. 17, 2023
Abstract
The
present
study
investigated
the
use
of
oak
charcoal-based
activated
carbon
(OC-AC)
as
an
adsorbent
for
removal
methylene
blue
(MB)
dye
from
aqueous
solutions.
examined
effects
key
operational
variables,
including
pH,
equilibrium
time,
dosage,
and
initial
concentration.
results
showed
that
pH
had
no
significant
effect
on
MB
adsorption
concentration
below
50
mg
L−1
dosage
1
g
L−1,
but
increasing
contact
time
improved
efficiency.
For
instance,
at
percentage
increased
76
to
99.9%,
with
0.5
3
L−1.
In
addition,
5
300
min,
45.43
87.42%.
also
analyzed
kinetics
isotherm
behavior
found
Avrami
fractional
order
kinetic
model
Freundlich
provided
best
fit
experimental
data.
real
water
samples
OC-AC
could
be
used
efficient
environmentally
friendly
removing
contaminated
effluents
ranging
83
97%.