RSC Advances,
Год журнала:
2023,
Номер
13(10), С. 6954 - 6965
Опубликована: Янв. 1, 2023
The
current
work
describes
the
synthesis
of
carbonaceous
composites
via
pyrolysis,
based
on
CMF,
extracted
from
Alfa
fibers,
and
Moroccan
clay
ghassoul
(Gh),
for
potential
use
in
heavy
metal
removal
wastewater.
Following
synthesis,
(ca-Gh)
material
was
characterized
using
X-ray
fluorescence
(XRF),
Scanning
Electron
Microscopy
coupled
with
Energy
Dispersive
(SEM-EDX),
zeta-potential
Brunauer-Emmett-Teller
(BET).
then
used
as
an
adsorbent
cadmium
(Cd2+)
aqueous
solutions.
Studies
were
conducted
into
effect
dosage,
kinetic
time,
initial
concentration
Cd2+,
temperature
also
pH
effect.
Thermodynamic
tests
demonstrated
that
adsorption
equilibrium
attained
within
60
min
allowing
determination
capacity
studied
materials.
investigation
kinetics
reveals
all
data
could
be
fit
by
pseudo-second-order
model.
Langmuir
isotherm
model
might
fully
describe
isotherms.
experimental
maximum
found
to
20.6
mg
g-1
261.9
Gh
ca-Gh,
respectively.
thermodynamic
parameters
show
Cd2+
onto
investigated
is
spontaneous
endothermic.
Case Studies in Chemical and Environmental Engineering,
Год журнала:
2023,
Номер
8, С. 100456 - 100456
Опубликована: Авг. 12, 2023
Industrial
textile
discharges
are
widespread
causes
of
water
pollution
that
threaten
the
ecosystem
and
health.
This
research
paper
focuses
on
removal
two
toxic
dyes
methylene
blue
(MB)
crystal
violet
(CV)
by
muscovite
clay
(Mus-C)
while
studying
selectivity,
sensitivity,
different
possible
interactions
to
understand
adsorption
mechanism.
The
Mus-C
material
was
characterized
several
instrumental
techniques
including
XRD,
FTIR,
SEM-EDX,
TGA/DTA,
pHpzc,
Boehm
surface
functions.
high
efficiency
is
reflected
rates
MB
CV
which
about
98.25%
99.7%
respectively,
under
25
°C,
pH
=
6,
dye
concentration
70
mg
L−1,
adsorbent
dose
1.5
g
L−1.
kinetics
isotherm
follow
pseudo-second-order
Langmuir
models
with
monolayer
capacities
66.95
g−1
69.54
respectively.
thermodynamic
characteristics
demonstrate
process
spontaneous,
physical,
endothermic.
rate
values
predicted
response
approach
were
consistent
experimental
in
order
99.98%
99.89%
performance
according
tomato
bean
germination
test
its
regeneration
capacity
cycles
shows
a
promising
effective
technology
treatment
complex
wastewater.
International Journal of Environmental & Analytical Chemistry,
Год журнала:
2023,
Номер
105(1), С. 223 - 244
Опубликована: Сен. 6, 2023
This
study
utilised
activated
carbon,
synthesised
with
H3PO4
as
an
active
agent
(referred
to
C-H3PO4),
adsorbent
for
the
removal
of
tetracycline
(TC),
a
commonly
used
pharmaceutical
compound.
The
carbon
underwent
characterisation
through
SEM-EDS,
FTIR,
and
XRD
analyses.
C-H3PO4
particles
were
found
range
in
size
from
63
50
µm
possessed
acidic
functions
within
surface
area
590
mmol/g.
To
assess
adsorptive
performance
relation
tetracycline,
several
operational
parameters
investigated,
including
contact
time,
temperature,
pH,
concentration
compound,
dosage.
Optimal
conditions
determined
follows:
pH
2.8,
TC
15
mg/L,
temperature
308
K,
dosage
90
mg,
utilising
design
experiments
(DOE/FFD)
parameter
optimisation.
In
addition,
analysis
variance
(ANOVA)
three-dimensional
plots
created
evaluate
interaction
between
factors
ideal
removing
tetracycline.
maximum
adsorption
capacity
onto
was
be
7.41
mg/g.
experimental
data
best
fitted
using
pseudo-second-order
Freundlich
models,
suggesting
multilayer
physisorption
phenomenon.
