Indonesian Journal of Material Research,
Journal Year:
2024,
Volume and Issue:
2(2), P. 56 - 60
Published: July 26, 2024
Heavy
metals
in
the
environment
can
have
a
detrimental
impact
on
human
health.
This
study
successfully
used
new
adsorbent
material,
specifically
layered
double
hydroxide
pillared
with
keggin
polyoxometalate
H4[α-PW12O40]•nH2O
(Ca-Al/POM),
to
effectively
remove
cadmium
(II)
from
aqueous
solution.
The
Ca-Al/POM
has
been
thoroughly
analyzed
using
X-ray
diffraction
and
FT-IR.
findings
showed
an
increase
maximum
adsorption
capacity
for
when
Ca-Al
LDH
intercalated
POM.
of
equilibrium
isotherms
that
removed
fit
Freundlich
isotherm
model.
In
addition,
kinetics
followed
pseudo
second-order
Green Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
10, P. 100135 - 100135
Published: Aug. 4, 2024
The
presence
of
pharmaceuticals
in
water
is
a
major
problem
worldwide.
To
alleviate
this,
this
study
produced
carbon
blends
from
avocado
seeds
and
paper
waste
activated
them
with
hydrogen
peroxide
(H2O2),
nitric
acid
(HNO3)
potassium
permanganate
(KMnO4).
effectiveness
the
adsorbents
was
tested
removing
ibuprofen
(IBU)
paracetamol
(PRC)
water.
Characterization
by
SEM,
BET,
FTIR
TGA
revealed
that
morphology
porous,
large
surface
area
several
functional
groups
bound
to
surface.
concentration
effect
experiments
showed
uptake
IBU
PRC
increased
an
increasing
initial
these
data
were
consistent
Freundlich
model.
contact
time
rapid
phase
for
all
adsorbents.
However,
rate
gradually
slowed
down
equilibrium
reached
after
40
min
BCMN,
60
BCMH
BCMP
120
BCM.
IBU,
on
other
hand,
30
These
complemented
PSOM.
model
based
chemisorption,
where
electrons
are
transferred
shared,
bonding
π-π
interactions.
△Ho
value
confirms
sorption
endothermic.
△So
positive,
indicating
greater
freedom
at
solution
interface
during
uptake.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(11), P. 8675 - 8695
Published: Jan. 1, 2025
Salbutamol
sulfate
(SAL)
and
prednisolone
(PRD)
are
commonly
used
for
treating
respiratory
inflammatory
conditions,
yet
they
frequently
detected
in
aquatic
ecosystems,
posing
significant
risks
to
life
biodiversity.
Despite
the
growing
concern
over
pharmaceutical
pollution,
there
is
a
lack
of
reliable
sustainable
methods
quantifying
these
drugs
both
environmental
samples,
as
well
effective
adsorbents
their
removal
from
contaminated
water.
This
study
aims
fill
this
gap
by
developing
reversed-phase
high-performance
liquid
chromatography
(RP-HPLC)
method
SAL
PRD,
while
also
creating
an
organoclay-activated
carbon
composite
adsorbent
removing
The
HPLC
was
validated
linearity,
precision,
accuracy,
robustness,
specificity,
with
detection
limits
1.06
μg
mL-1
0.95
PRD.
demonstrated
high
efficiency
drugs,
achieving
maximum
adsorption
capacities
731.64
mg
g-1
888.75
PRD
at
pH
7,
dose
0.4
g
temperature
45
°C.
Thermodynamic
analysis
revealed
that
process
endothermic
spontaneous.
Characterization
using
FTIR,
SEM,
XRD,
BET
confirmed
its
structure.
Adsorption
followed
Langmuir
model
Sips
equilibrium
reached
within
240
minutes
following
pseudo-second-order
kinetics.
Ethanol
proved
more
than
acetone
acetic
acid
desorbing
SAL,
found
be
cost-effective,
offering
practical
solution
large-scale
water
treatment.
Sustainability
assessments
ComplexGAPI,
BAGI,
RGB
12
algorithms
highlighted
strong
friendliness.
research
provides
valuable
insights
quality
control
remediation
pollutants.
