MATEC Web of Conferences,
Год журнала:
2024,
Номер
398, С. 01039 - 01039
Опубликована: Янв. 1, 2024
This
study
investigates
the
synthesis
of
activated
carbon
from
waste
tires,
focusing
on
how
heating
rates
influence
activation
energy
and
product
quality.
Through
controlled
experiments,
research
evaluates
impact
varying
thermal
treatments
resultant
carbon’s
surface
area,
pore
size,
volume.
The
objective
is
to
establish
optimal
conditions
that
enhance
adsorptive
properties
while
maximizing
efficiency
in
production
process.
Findings
indicate
slower
are
conducive
producing
with
higher
areas
smaller,
more
uniform
sizes,
traits
desirable
for
effective
adsorption.
Specifically,
produced
under
slow
exhibited
a
area
621
m²/g
size
292
Å,
compared
570
308
Å
faster
conditions.
demonstrates
direct
correlation
between
rate
material’s
structural
characteristics
affect
its
adsorption
capacity.
Incorporated
within
this
parametric
model
forecasts
qualities
various
regimens,
facilitating
precise
adjustment
reveals
nuanced
understanding
consumption
Lower
rates,
beneficial
quality,
necessitate
reevaluation
expenditure
ensure
economic
viability.
Conversely,
slight
reduction
quality
observed
rapid
suggests
potential
time
savings,
offering
trade-off
performance.
bridges
gap
process
parameters
providing
valuable
insights
development
sustainable,
cost-effective
methods.
By
identifying
ideal
paves
way
advancements
manufacturing,
promising
significant
improvements
environmental
sustainability
efficiency.
contributes
broader
application
pollution
control
resource
recovery,
underscoring
importance
optimized
manufacturing
processes.
Materials,
Год журнала:
2023,
Номер
16(2), С. 514 - 514
Опубликована: Янв. 5, 2023
This
work
aims
to
prepare
a
novel
phosphate-embedded
silica
nanoparticles
(P@SiO2)
nanocomposite
as
an
effective
adsorbent
through
hydrothermal
route.
Firstly,
mixed
solution
of
sodium
silicate
and
phosphate
was
passed
strong
acidic
resin
convert
it
into
hydrogen
form.
After
that,
the
resultant
hydrothermally
treated
yield
P@SiO2
nanocomposite.
Using
kinetic
studies,
methylene
blue
(MB)
dye
selected
study
removal
behavior
The
obtained
composite
characterized
using
several
advanced
techniques.
experimental
results
showed
rapid
adsorption
where
equilibrium
reached
within
100
s,
pseudo-second-order
fitted
well
with
data.
Moreover,
according
Langmuir,
one
gram
can
remove
76.92
mg
dye.
thermodynamic
studies
that
process
spontaneous,
exothermic,
ordered
at
solid/solution
interface.
Finally,
indicated
presence
NaCl
did
not
impact
MB
Due
significant
efficiency
promising
properties
prepared
nanocomposite,
could
be
used
material
various
cationic
forms
pollutants
from
aqueous
solutions
in
future
works.
Chemical Engineering Journal Advances,
Год журнала:
2024,
Номер
18, С. 100608 - 100608
Опубликована: Апрель 16, 2024
Methylene
blue
(MB)
is
a
well-known
dye
that
used
in
many
industries
and
highly
polluting
to
the
environment.
Therefore,
this
paper
proposes
using
sunflower
husks
(SFH)
through
coating
with
nanomaterial
made
of
silicon
dioxide
(SiO2)
weight
percentage
(w/w)
5:1
produce
(SFH-SiO2)
nanoparticles
for
removing
MB
from
aqueous
solutions.
This
method,
known
as
green
synthesis,
characterized
by
being
environmentally
friendly
low-cost,
well
efficient
removal
process.
The
prepared
composite
was
conducting
analysis
Field
emission
scanning
electron
microscopy
(SEM)
(EDX),
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FTIR)
were
look
at
samples.
optimal
conditions
process
found
be
pH
6,
0.2
g/50
mL
dose
adsorbent.
At
temperature
25
°C,
best
time
remove
150
minutes.
With
maximal
adsorption
capacity
(qmax)
70.16
mg
g−1,
findings
match
Freundlich
model.
follows
pseudo-second-order.
negative
value
Gibbs
free
energy
(ΔG°)
indicated
reaction
spontaneous.
could
represent
suitable
method
cationic
dyes
aquatic
environments.
ACS Omega,
Год журнала:
2023,
Номер
8(32), С. 29543 - 29557
Опубликована: Июль 31, 2023
The
high
sulfate
content
in
various
alkaline
wastes,
including
those
from
fossil
fuel
and
biomass
combustion,
other
industrial
processes,
necessitates
careful
management
when
used
cementitious
systems
to
prevent
potential
deterioration
of
construction
materials
environmental
safety
concerns.
This
study
explores
the
under-researched
area
high-sulfur
fly
ash
(HSFA)
utilization
production
cement-free
monoliths
through
accelerated
carbonation
further
examines
effect
niobium
slag
(NS)-a
calcium
aluminate-containing
slag-as
an
additive
on
strength
development
mobility
SO42-.
methodology
involves
mineralogical
microstructural
analyses
before
after
carbonation,
accounting
for
effects
treatment
NS
addition.
findings
suggest
that
significantly
improves
initial
compressive
HSFA
generally
immobilizes
heavy
metals,
while
immobilization
can
vary
depending
composition.
Moreover,
addition
enhances
without
substantially
hindering
CO2
uptake,
reducing
leaching
values,
particularly
sulfates
metals.
These
it
is
feasible
use
HSFA-based
carbonated
immobilize
compromising
derived
carbonation.
research
contributes
understanding
how
enhance
performance
materials,
providing
valuable
insights
sustainable
materials.
Nanomaterials,
Год журнала:
2022,
Номер
12(23), С. 4325 - 4325
Опубликована: Дек. 5, 2022
The
organic
dye
malachite
green
(MG)
poses
a
potential
risk
of
cancer
and
fertility
loss
in
humans
aquatic
organisms.
This
study
focused
on
modified
pyrolytic
char
(PC)
derived
from
waste
tires
to
efficiently
remove
MG
wastewater.
Modified
PC
has
rich
-OH
functional
groups,
higher
BET
(Brunauer-Emmett-Teller)
surfaces
74.4,
64.95,
67.31
m2/g,
larger
pore
volumes
0.52,
0.47,
0.62
cm3/g
for
NaOH,
Na2CO3,
CaO
modification,
respectively.
pseudo-second-order
model
fit
the
adsorption
well,
maximum
equilibrium
capacity
was
937.8
mg/g
after
activation
(CaO-PC).
NaOH-modified
(NaOH-PC)
showed
best
with
Langmuir
(R2
=
0.918).
It
is
suggested
that
alkali-modified
tire
could
be
adsorbent
removing
dye-containing
