Chemical and Process Engineering New Frontiers,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
Activated
carbons
(ACs)
produced
from
end-of-life
tires
with
different
tire
pyrolysis
char
(TPC)-to-activator
(KOH)
ratios
of
1:2,
1:3,
and
1:4
were
prepared
characterized.
These
materials
used
as
adsorbents
for
the
removal
two
common
chloroorganic
water
contaminants
such
2,4-dichlorophenol
(DCP)
2,4-dichlorophenoxyacetic
acid
(2,4-D).
The
adsorption
kinetics,
equilibrium
adsorption,
effects
solution
pH
investigated.
both
adsorbates
was
found
to
be
pH-dependent
preferred
in
acidic
environments.
kinetics
evaluated
using
pseudo-first-order
pseudo-second-order
kinetic
models
mechanism
-
Weber-Morris
Boyd
models.
Results
demonstrated
that
DCP
2,4-D
on
all
ACs
followed
model
controlled
by
film
diffusion.
Langmuir
isotherm
described
data
better
than
Freundlich
model.
maximum
capacity
adsorbed
AC1:2,
AC1:3,
AC1:4
at
0.582,
0.609,
0.739
mmol/g,
respectively,
while
capacities
0.733,
0.937,
1.035
respectively.
rate
efficiency
closely
correlated
porous
structure
tested
adsorbents.
results
showed
activated
obtained
scrap
raw
could
a
low-cost
alternative
adsorbent
chlorinated
organic
pollutants
water.
Journal of Water Process Engineering,
Journal Year:
2024,
Volume and Issue:
66, P. 106027 - 106027
Published: Aug. 24, 2024
The
widespread
usage
of
2,4-Dichlorophenoxyacetic
acid
(2,4-D)
as
an
herbicide
has
led
to
alarming
levels
environmental
pollution,
presenting
severe
risks
ecosystems
and
human
health.
This
study
aimed
synthesize
a
new
adsorbent,
activated
carbon
from
candle
bush
pods
(CBAC)
via
low-temperature
phosphoric
activation
investigate
its
ability
for
adsorptive
elimination
2,4-D.
setup
adsorption
system
requires
the
experimental
determination
isotherms
their
thorough
modeling,
which
is
achieved
through
advanced
statistical
physics
models
(ASPMs).
characterization
CBAC
revealed
porous
morphology
with
remarkable
specific
surface
area
(415.31
m2/g).
XRD
graphitic
structures,
while
XPS
detected
phosphate
groups,
oxygen-containing
functional
groups.
Double
layer
single
energy
(DLSE)
model
–
one
ASPMs
both
non-parallel
parallel
orientation
2,4-D
molecules
on
CBAC,
saturation
capacity
values
increasing
temperature
(up
252.35
mg/g)
at
pH
2.
was
physisorption
(ΔE
=
12.62–16.26
kJ/mol)
spontaneous
endothermic.
Hence,
findings
herein
demonstrate
potential
sustainable
effective
adsorbent
mitigating
pollution
caused
by
