Results in Engineering,
Journal Year:
2023,
Volume and Issue:
20, P. 101420 - 101420
Published: Sept. 25, 2023
Nano
zero-valent
iron
(nZVI),
bimetallic
nano
iron-copper
(Fe0–
Cu),
and
fava
bean
activated
carbon-supported
(AC-Fe0-Cu)
are
synthesized
characterized
using
DLS,
zeta
potential,
FT-IR,
XRD,
SEM.
The
maximum
removal
capacity
is
demonstrated
by
Fe0–Cu,
which
estimated
at
413.98
mg/g
pH
7,
180
min
of
contact
duration,
120
rpm
shaking
speed,
ambient
temperature,
100
ppm
C.V.
dye
solution,
1
g/l
dosage.
elimination
capability
the
H2SO4
chemical
AC-Fe0-Cu
adsorbent
415.32
under
same
conditions
but
with
a
150
solution.
H3PO4
achieves
350
solution
1.5
Optimal
for
efficiency
determined
varying
(3–9),
time
intervals
(15–180
min),
initial
concentrations
(25–1000
ppm).
Kinetic
isothermal
models
used
to
fit
results
concentration
experiments.
intra-particle
model
yields
best
AC-
AC-Fe0-Cu,
corrected
R-Squared
values
0.9656,
0.9926,
0.964,
respectively.
emphasize
significance
physisorption
chemisorption
in
outcomes.
Response
surface
methodology
(RSM)
artificial
neural
networks
(ANN)
employed
optimize
efficiency.
RSM
facilitates
numerical
optimization,
while
ANN
optimized
moth
search
algorithm
(MSA)
optimal
results.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: March 4, 2024
Abstract
The
current
study
shows
that
using
a
batch
approach
to
remove
crystal
violet
dye
from
synthetic
wastewater
is
feasible
when
royal
palm
leaf
sheath
powder
as
an
adsorbent.
In
order
investigate
the
effects
of
many
parameters,
including
starting
concentration,
pH
effect,
adsorbent
dose,
contact
time,
and
temperature,
experiments
were
carried
out
under
various
operating
conditions.
Maximum
removal
was
obtained
at
6
concentration
100
ppm,
which
are
considered
ideal
values.
influence
shown
be
substantial.
Langmuir,
Freundlich,
Temkin
isotherm
models
fitted
equilibrium
data.
Langmuir
model,
showed
maximum
monolayer
adsorption
capacity
454.5455
mg/g,
best
described
Pseudo-second-order
kinetic
model
found
closely
resemble
rather
than
first-order
intra-particle
diffusion
models.
Standard
enthalpy
(∆H◦
)
,
entropy
(
∆S◦
),
free
energy
(∆G◦)
evaluated
thermodynamic
parameters.
It
discovered
endothermic
in
nature.
outcomes
highlight
applicability
inexpensive,
locally
accessible
specialty
area
treatment
can
used
commercial
dye-enriched
effluent.
Advances in Sample Preparation,
Journal Year:
2024,
Volume and Issue:
9, P. 100105 - 100105
Published: Feb. 1, 2024
Here,
we
report
an
optimization
of
the
extraction
crystal
violet
and
congo
red
dyes
from
shrimp
samples,
employing
matrix
solid
phase
dispersion
improved
multivariate
optimization.
Three
factors
were
evaluated:
(i)
adsorbent
nature
(neutral
alumina,
silica
gel
C18);
(ii)
eluent
strength
(dimethylformamide,
methanol
acetonitrile);
(iii)
sample-adsorbent
ratio
(1:1;
1:5;
1:10,
m/m).
Successful
was
achieved
using
dimethylformamide
as
eluent,
neutral
alumina
sample:adsorbent
1:5
(m/m).
Adsorption
kinetic
studies
suggest
strong
interaction
between
dye
adsorbent.
Furthermore,
digital
image
colorimetric
detection,
study
observed
limit
detection
(LOD)
ranging
3.8
to
29.8
µg
L−1
quantification
(LOQ)
12.3
90.3
with
R2
>
0.9927
for
both
dyes,
CV
CR,
respectively.
Notably,
recovery
greater
than
86%
a
relative
standard
deviation
(RSD)
inferior
7%
(n=3).
These
findings
indicate
effectiveness
technique
in
conjunction
solid-phase
successful
showing
its
potential
accurate
sensitive
similar
analyses.
The
proposed
method
compared
gold
(UV/Vis
spectroscopy)
statistical
treatment
showed
that
results
methods
are
comparable.
Environmental Science and Pollution Research,
Journal Year:
2024,
Volume and Issue:
31(17), P. 24894 - 24912
Published: March 9, 2024
Nowadays,
organic
dyes
are
prevalent
components
in
wastewater
discharges
due
to
their
extensive
use
various
industries,
posing
a
significant
threat
public
health
across
different
organisms.
As
result,
treatment
has
become
an
indispensable
requirement.
In
this
study,
we
synthesized
supermagnetic
iron
oxide
(Fe
