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.
Results in Surfaces and Interfaces,
Год журнала:
2024,
Номер
14, С. 100192 - 100192
Опубликована: Фев. 1, 2024
Water
depollution
via
adsorption
is
an
energy-efficient
technique
that
uses
activated
carbon
produced
from
walnut
shells
to
remove
different
pollutants.
Our
research
integrates
theoretical
and
experimental
approaches
comprehensively
understand
the
subject.
By
analyzing
organic
functional
groups
in
shell-derived
(AC-Ws),
evaluating
performance,
employing
DFT
analysis,
optimizing
conditions,
we
provide
valuable
insights
into
application
of
AC-Ws
for
removing
pesticide
pollutants
wastewater.
The
properties
this
(AC-Ws)
are
identified
by
techniques
such
as
XRD,
FTIR,
SEM/EDX,
pHzpc,
Boehm
titration.
A
response
surface
methodology
(RSM)
has
been
utilized
develop
experiment
aqueous
solutions
two
herbicides,
2,4,5-trichlorophenoxyacetic
acid
(2.4.5-T),
2,4-Dichlorophenoxyacetic
(2,4-D).
Abbreviations
technical
terms
will
be
explained
when
first
used,
objective
language
used
throughout.
Grammar
spelling
conform
British
standards.
examined
removal
herbicides
based
on
three
independent
variables;
pH,
dosage,
temperature,
within
specific
ranges
(pH:
4–10,
dosage:
0.1–0.3
g/L,
temperature:
20–40
°C).
conducted
17
experiments
using
Design-Expert
software.
Optimal
conditions
included
pH
4
dosage
0.3
g/L
2.4.5-T
5
0.1
2,4-D.
These
demonstrated
efficiency
98%
desirability
function
1.000
92%
findings
suggest
process
was
thermodynamically
favorable
exothermic.
data
described
accurately
pseudo-second
order
kinetic
model,
Freundlich
isotherm
model
showed
good
alignment
with
equilibrium
data.
Using
method,
functions
were
adsorbent's
surface,
density
theory
(DFT)
applied
evaluate
mechanism
sites.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102073 - 102073
Опубликована: Апрель 3, 2024
To
address
environmental
pollution
caused
by
dyes
and
heavy
metals,
it
is
crucial
to
fabricate
effective
adsorbent
material
remove
contaminants
from
the
environment.
In
this
research,
a
biogenic-assisted
treatment
was
applied
kaolin
clay
eliminate
arsenic
ions
(As(V))
malachite
green
(MG)
using
an
adsorption
technique.
An
environmentally
friendly
ultrasonic
method
used
incorporate
Pterocarpus
mildraedii
into
mesoporous
structure
of
(PMKC)
with
unique
flake-like
morphology
characterized
hexagonal
structures
formed
quartz
kaolin.
Various
analytical
techniques
were
employed
analyze
functional
groups,
crystallographic
structures,
surface
properties
PMKC.
The
findings
reveal
that
PMKC,
eco-friendly
adsorbent,
effectively
removed
As(V)
MG
wastewater
under
specific
conditions:
solution
pH
6,
PMKC
dosage
40
mg/L,
contact
time
60
min,
initial
concentration
As(V)/MG
100
temperature
°C.
Furthermore,
exhibited
high
capacities
337.22
mg/g
towards
274.73
MG.
Dubinin-Radushkevich
pseudo-first-order
models
found
best
describe
experimental
data
obtained
isotherm
kinetic
studies.
Because
can
be
reused
remains
stable
for
up
ten
cycles,
holds
promise
as
valuable
removing
dye
metal
pollutants.
