International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 23
Опубликована: Дек. 12, 2024
The
removal
of
contaminants
from
the
water
system
is
so
significant
for
better
human
life.
Adsorption
method
proven
to
be
best
decontamination
waste
water.
Adsorbent
based
on
biohydrogel
widely
used
this
purpose
biooriginated
adsorbent
named
GG-g-
P(AA)/CoFe2O4
(30
mg)-GGAACF-3
was
synthesised
and
utilised
combine
metformin
hydrochloride
(MF)
diclofenac
sodium
(DCF).
prepared
using
free
radical
initiator
ammonium
persulphate(APS),
cross-linked
crosslinking
agent
N,
N'-
methylenebisacrylamide
(MBA)
accelerator
tetramethyl
ethylenediamine
(TEMED).
GGAACF-3
exhibited
high
efficiency
DCF
than
MF.
highest
MF
found
82.17%
69.26%
at
dose
40
mg,
neutral
pH,
room
temperature
(20°C)
contact
time
24
h,
respectively.
both
drugs
followed
Langmuir
adsorption
isotherm
Pseudo-
2nd-order
model
kinetic
which
indicated
about
homogeneous
surface
chemisorption,
maximum
capacity
(qe)
determined
123.60
mg/g
120.7729
mg/g,
Journal of Dispersion Science and Technology,
Год журнала:
2024,
Номер
unknown, С. 1 - 12
Опубликована: Ноя. 26, 2024
Coconut
coir
was
explored
as
economical
sorbent
for
the
adsorptive
removal
of
lanthanum
ion
(La3+)
from
aqueous
media.
Both
column
and
batch
studies
were
conducted
to
assess
effective
La3+
on
coconut
by
optimizing
different
adsorption
variables
such
bed
height,
flow
rate,
pH,
adsorbent
dosage,
shaking
time,
initial
metal
concentration,
temperature.
Characterization
carried
out
scanning
electron
microscopy
(SEM),
FT-IR,
BET
prior
subsequent
adsorption.
The
defined
in
certain
media
pHzpc,
which
found
be
5.7
±
0.1.
optimum
94.04
0.2%
observed
4
cm3
90
mol/L
solution
with
0.3
g
dose
10
min
at
neutral
pH.
Langmuir
capacity
𝑞𝑒=2.88±0.02
𝑚𝑔
𝑔−1
Freundlich
KF
=0.1294±0.03
𝑔−1.
pseudo-second-order
kinetic
isotherm
models
provided
an
ideal
fit
process.
analysis
also
showed
direct
correlation
height
concentration
%
adsorption,
while
decreased
rate
increased.
high
regression
coefficient
values
confirm
that
BDST
model
is
line
test
data.
Van't
Hoff
equation
proved
spontaneous
endothermic
Effect
external
ions
desorption
are
studied.
results
suggest
a
cost
efficient
bio-sorbent
solution.
International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 21
Опубликована: Июнь 5, 2024
The
current
study
mainly
deals
with
the
adsorptive
removal
of
diclofenac
sodium
(DS)
drug
from
aqueous
solution
by
use
kaolin-CS-g-poly(AA-co-NIPAM)
composite.
synthesised
composite
was
characterised
Fourier
Transform
infrared
(FTIR),
X-ray
diffraction
(XRD),
Field
emission
scanning
electron
microscopy
(FESEM),
thermogravimetric
analysis
(TGA),
Transmission
(TEM),
energy
dispersive
X-Ray
spectroscopy
(EDS),
atomic
force
(AFM),
swelling
%
ratio
and
point
zero
charge
(pHPZC).
pHpzc
determined
to
be
4.
maximum
adsorption
capacity
18.51
mg/g
observed
at
optimised
conditions,
including
0.1
g
kaolin
clay
dose,
neutral
pH
using
dose
0.06
for
90
min.
optimum
concentration
500
mg/l
temperature
30°C.
Effect
ionic
strength
on
its
mechanism
DS
has
also
been
investigated.
process
prepared
chemical
data
fits
well
pseudo
second
order
Langmuir
model.
Overall,
spontaneous
endothermic
in
nature.
International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 23
Опубликована: Дек. 12, 2024
The
removal
of
contaminants
from
the
water
system
is
so
significant
for
better
human
life.
Adsorption
method
proven
to
be
best
decontamination
waste
water.
Adsorbent
based
on
biohydrogel
widely
used
this
purpose
biooriginated
adsorbent
named
GG-g-
P(AA)/CoFe2O4
(30
mg)-GGAACF-3
was
synthesised
and
utilised
combine
metformin
hydrochloride
(MF)
diclofenac
sodium
(DCF).
prepared
using
free
radical
initiator
ammonium
persulphate(APS),
cross-linked
crosslinking
agent
N,
N'-
methylenebisacrylamide
(MBA)
accelerator
tetramethyl
ethylenediamine
(TEMED).
GGAACF-3
exhibited
high
efficiency
DCF
than
MF.
highest
MF
found
82.17%
69.26%
at
dose
40
mg,
neutral
pH,
room
temperature
(20°C)
contact
time
24
h,
respectively.
both
drugs
followed
Langmuir
adsorption
isotherm
Pseudo-
2nd-order
model
kinetic
which
indicated
about
homogeneous
surface
chemisorption,
maximum
capacity
(qe)
determined
123.60
mg/g
120.7729
mg/g,
