Adsorption Science & Technology,
Год журнала:
2024,
Номер
42
Опубликована: Янв. 1, 2024
In
this
study,
vermiculite
was
modified
and
used
in
the
decolorization
of
wastewater
containing
methylene
blue.
Taguchi
experimental
design
method
applied
to
process.
An
L
16
orthogonal
array
obtained
according
by
determining
five
factors
effective
on
process
(pH,
time,
concentration,
amount,
temperature)
four
levels
these
factors.
determined
concentration
as
most
factor.
It
suggested
pH
3,
60
min,
5
mg.L
−1
,
2
g.L
50°C
optimum
conditions.
Equilibrium
studies
were
carried
out
with
Langmuir,
Freundlich,
Temkin,
Dubinin–Radushkevich
isotherm
models,
found
be
compatible
Langmuir
(
R
=
0.9103)
0.9344)
model.
that
material
had
a
maximum
capacity
9.60
mg.g
.
kinetic
conducted
pseudo-first-order,
pseudo-second-order,
intraparticle
diffusion
complied
pseudo-first-order
0.9903)
0.9811)
models.
The
chemical
composition
determined,
phase
analysis
performed.
By
Branuer–Teller–Emmet
analysis,
it
exhibited
higher
surface
area
(8.00
m
/g)
modifying
it.
seen
result
Fourier
transform-infrared
spectroscopy
active
functional
groups
similar
for
vermiculite.
Mass
losses
both
materials
evaluated
thermal
analysis.
