Inorganics,
Journal Year:
2025,
Volume and Issue:
13(4), P. 112 - 112
Published: April 3, 2025
Crystal
violet
dye
poses
significant
environmental
and
human
health
risks
due
to
its
toxicity,
persistence,
bioaccumulative
nature.
It
contributes
potential
carcinogenicity,
cytotoxicity,
systemic
toxicity
upon
exposure.
To
address
this
issue,
a
novel
SrCO3/MgO/CaO/CaCO3
nanocomposite
was
synthesized
using
the
Pechini
sol-gel
method,
producing
AE500
AE700
at
500
700
°C,
respectively,
for
efficient
removal
of
crystal
from
aqueous
media.
X-ray
diffraction
(XRD)
analysis
confirmed
formation
crystalline
phases,
with
average
crystallite
sizes
64.53
nm
75.34
AE700.
Energy-dispersive
spectroscopy
(EDX)
revealed
elemental
compositions
variations
in
carbon,
oxygen,
magnesium,
calcium,
strontium
percentages
influenced
by
synthesis
temperature.
Field-emission
scanning
electron
microscopy
(FE-SEM)
showed
morphological
differences,
where
had
irregular
polyhedral
structures,
while
exhibited
more
compact
spherical
formations,
grain
99.98
132.23
nm,
respectively.
High-resolution
transmission
(HR-TEM)
structural
integrity
nano-scale
morphology,
showing
aggregated
irregularly
shaped
particles
AE500,
displayed
well-defined
nearly
nanoparticles.
The
calculated
particle
diameters
were
21.67
41.19
AE700,
demonstrating
an
increase
size
Adsorption
studies
demonstrated
maximum
capacities
230.41
mg/g
189.39
adsorption
process
exothermic,
spontaneous,
physical,
following
pseudo-first-order
kinetic
model
Langmuir
isotherm,
indicating
monolayer
onto
homogenous
surface.
ACS Applied Engineering Materials,
Journal Year:
2024,
Volume and Issue:
2(4), P. 1031 - 1046
Published: April 2, 2024
In
this
study,
a
novel
biobased
treated
kaolin
clay
incorporated
with
zerovalent
nickel
(TKC-Ni0NPs)
was
fabricated
and
employed
as
an
efficient
functionalized
adsorbent
for
the
elimination
of
crystal
violet
(CV)
methyl
orange
(MO)
from
textile
wastewater.
The
adsorption
capacity
TKC-Ni0NPs
improved
by
incorporating
functional
moieties
nanoparticles
on
structure
using
experimental
data
kinetics,
isotherm,
thermodynamics,
reusability
study.
crystalline
structures,
groups,
morphological
characteristics
TKC,
Ni0NPs,
were
analyzed
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FTIR),
high-resolution
scanning
electron
microscopy
(HRSEM).
point
zero
charge
pH
surface
evaluated
4.5.
adsorptive
removal
CV
MO
explored
at
solution
pH,
contact
time,
dosage,
initial
CV/MO
concentration,
temperature.
Maximum
capacities
802.56
812.28
mg/g
reported
both
optimal
6
4
MO,
time
60
min,
dosage
25
mg/L,
concentration
100
temperature
313
K.
Remarkably,
exhibited
favorable
behavior
in
presence
cationic
anionic
coexisting
ions.
study
showed
over
92.00
94.00%
effectiveness
even
after
10
cycles,
respectively,
which
holds
great
promise
industrial
use.
A
pseudo-second-order
kinetic
model
effectively
suited
implying
that
process
is
chemisorption
controlled.
Among
isotherm
models,
Langmuir
best
fit
data.
Thermodynamic
analysis
indicated
endothermic
spontaneous
surface.
Consequently,
cost-effective,
versatile,
stable
composite
significant
potential
wastewater
treatment
successfully
developed.
Environmental Research,
Journal Year:
2024,
Volume and Issue:
256, P. 119229 - 119229
Published: May 24, 2024
There
has
been
significant
attention
on
the
efficient
degradation
of
pollutants
in
wastewater
using
metal-organic
frameworks
(MOFs)
photocatalytic
methods
over
past
decade.
Herein,
we
examined
elimination
two
different
types
water-contaminating
dyes,
specifically
cationic
dye
methylene
blue
(MB)
and
anionic
methyl
orange
(MO),
through
application
bimetal
Cu/Ni-BTC@SiO
Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
320, P. 100607 - 100607
Published: July 15, 2024
This
study
aims
to
enhance
local
bentonite's
effectiveness
in
removing
methylene
blue
and
procion
deep
red
dyes
from
aqueous
media
through
organic
modification
with
cetyltrimethylammonium
bromide
surfactant.
Raw
modified
bentonites
were
analyzed
using
XRF,
XRD,
FTIR,
BET/BJH,
DSC
techniques.
The
bentonite
showed
a
crystalline
structure
mesoporous
morphology
heterogeneous
surface.
Optimal
adsorption
conditions
for
MB
dye
0.2
g
adsorbent
dose,
60
min
contact
time,
mg/L
initial
concentration,
pH
8,
achieving
maximum
sorption
capacity
of
6.418
mg/g.
For
PDR
dye,
optimal
0.125
40
30
acidic
pH,
8.503
Isotherm
analysis
indicated
the
Langmuir
model
best
fits
data,
suggesting
mono-layer
process.
Kinetic
investigations
revealed
that
follows
pseudo-second-order
model,
indicating
chemisorption
mechanism.
Thermodynamic
results
exothermic
endothermic
PDR.
work
highlights
potential
surfactant-modified
as
cost-effective
sorbent
treating
polluted
systems,
effectively
both
cationic
anionic
dyes.
Journal of Dispersion Science and Technology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 12
Published: Jan. 8, 2025
Rape
straw,
an
agricultural
by-product,
was
modified
with
citric
acid
(CA)
to
adsorb
the
cationic
dye
crystal
violet
(CV)
from
aqueous
solution.
The
morphology
and
surface
properties
of
adsorbent
were
observed
by
scanning
electron
microscopy
(SEM)
X-ray
photoelectron
analysis
(XPS).
experimental
conditions
optimized
effects
initial
pH,
dosage,
concentration
contact
time.
results
showed
that
CA-modified
rape
straw
had
a
higher
adsorption
capacity
for
compared
pristine
rapes
straw;
at
pH
3.0
±
0.15
removal
ratio
increased
up
98.30%
5.80%.
This
study
provides
detailed
comparison
time
curve
different
concentrations.
CV
rate
97.43%
0.25%,
99.09%
0.61%
99.11%
2.20%
respectively
within
30
min
high
low
Langmuir
isotherm
proved
be
most
appropriate
analytical
method
predict
results.
maximum
1012.62
6.40
mg
g−1.
kinetic
process
on
new
investigated
using
model
based
pseudo-first
pseudo-second
order.
good
fit
correlation
coefficient
R2
≥
0.99
suggested
order
has
affinity
mechanism.
