International Journal of Environmental & Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: Nov. 26, 2024
This
study
reports
the
designing
of
comb-type
polyethylene
glycol
(PEG)-functionalised
poly
(3-hydroxybutyrate)-@Titanium
oxide
(PHB-comb-PEG@TiO2)
through
reversible
addition-fragmentation
chain
transfer
(RAFT)
polymerisation
approach
for
first
time
and
successfully
used
as
a
potential
candidate
safranin-O
(Saf-O)
removal
from
water.
The
synthesised
polymeric
material
was
characterised
by
different
techniques
to
examine
surface
morphology,
elemental
analysis,
functionality,
chemical
structure
prepared
SEM,
EDX,
FTIR,
1
h
NMR.
Different
parameters
such
pH,
adsorbent
dose,
temperature,
concentration,
equilibrium
were
optimised
during
this
enhance
adsorption
performance.
mechanism
pattern
kinetic
best
defined
Langmuir
pseudo-second-order
kinetics
with
maximum
capacity
344.83
mg/g.
A
linear
concentration
range
(10–150
μg/L)
obtained
satisfactory
low
limit
detection
(LOD)
quantification
(LOQ)
achieved
0.43
1.4
μg/L,
respectively.
developed
utilised
Saf-O
an
aqueous
medium.
results
suggest
that
designed
could
be
in
terms
its
reusability,
simplicity,
high
capacity,
cost-effectiveness,
excellent
range,
fast
kinetics.
STUDIES IN ENGINEERING AND EXACT SCIENCES,
Journal Year:
2024,
Volume and Issue:
5(2), P. e8245 - e8245
Published: Sept. 24, 2024
Adsorption-based
removal
is
a
highly
efficient
environmental
phenomenon
employed
to
eliminate
various
dyes,
such
as
crystal
violet
(CV),
which
prevalently
used
in
the
textile
industry
and
subsequently
discharged
into
natural
ecosystems.
This
study
aims
utilize
bentonite
clay
sourced
from
Algeria
for
extraction
of
cationic
dye
(CV)
wastewater.
The
characterization
was
conducted
using
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
Scanning
Electron
Microscopy
(SEM),
X-Ray
Diffraction
(XRD).
Evaluations
assessed
impact
parameters
including
pH,
stirring
time,
temperature,
initial
concentration
on
adsorption
efficiency.
Optimal
conditions
maximal
CV
were
determined
be
430.18
mg
g-1
at
an
adsorbent-to-dye
solution
ratio
1
g
L-1,
pH
11.06,
equilibrium
time
40
minutes,
temperature
40°C.
kinetics
best
described
by
pseudo-second-order
model,
while
Freundlich
isotherm
model
aptly
isotherms.
Thermodynamic
underscored
spontaneous
exothermic
nature
process
raw
bentonite.
research
provides
novel
insights
effective
water
wastewater
Algerian
clay.
Chemical Engineering Communications,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 18
Published: Nov. 18, 2024
This
study
was
performed
to
evaluate
the
adsorptive
properties
of
bentonite.
Natural
bentonite
found
adsorb
considerable
amounts
Salicylic
acid
(SA)
after
modification
by
hexadecyltrimethylammonium
bromide
(HDTMA).
Batch
studies
investigated
modified
natural
(organobentonite).
The
characterization
results
show
increase
in
d001
spacing
from
1.13
1.53
nm
for
raw
and
organobentonite,
respectively.
FTIR
analysis
indicates
asymmetric
vs.
(CH2)
symmetric
stretching
modes
clay
loaded
with
surfactant
molecules
are
2919
2845
cm−1,
We
investigate
parameters
such
as
contact
time,
pH,
temperature,
initial
concentration.
Desorption
regeneration
were
also
studied.
kinetic
shows
that
adsorption
equilibrium
salicylic
onto
organoclay
reached
120
min
fits
well
a
pseudo-second-order
model
contribution
intraparticular
diffusion.
In
addition,
adjustment
isothermal
models
indicated
Langmuir-Freundlich
best
fit
isotherms
data
unmodified
Langmuir
maximum
capacity
organobentonite
is
128
mg
g−1
at
25
°C.
According
statistical
physics
model,
SA
could
be
adsorbed
on
surface
non-parallel
orientation.
desorption-regeneration
investigation
revealed
material
successfully
reused
three
cycles
adsorption.
Mechanistic
sorption
have
highlighted
several
mechanisms:
hydrogen
bonding,
electrostatic
attraction,
hydrophobic
interaction.
International Journal of Environmental & Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 17
Published: Nov. 26, 2024
This
study
reports
the
designing
of
comb-type
polyethylene
glycol
(PEG)-functionalised
poly
(3-hydroxybutyrate)-@Titanium
oxide
(PHB-comb-PEG@TiO2)
through
reversible
addition-fragmentation
chain
transfer
(RAFT)
polymerisation
approach
for
first
time
and
successfully
used
as
a
potential
candidate
safranin-O
(Saf-O)
removal
from
water.
The
synthesised
polymeric
material
was
characterised
by
different
techniques
to
examine
surface
morphology,
elemental
analysis,
functionality,
chemical
structure
prepared
SEM,
EDX,
FTIR,
1
h
NMR.
Different
parameters
such
pH,
adsorbent
dose,
temperature,
concentration,
equilibrium
were
optimised
during
this
enhance
adsorption
performance.
mechanism
pattern
kinetic
best
defined
Langmuir
pseudo-second-order
kinetics
with
maximum
capacity
344.83
mg/g.
A
linear
concentration
range
(10–150
μg/L)
obtained
satisfactory
low
limit
detection
(LOD)
quantification
(LOQ)
achieved
0.43
1.4
μg/L,
respectively.
developed
utilised
Saf-O
an
aqueous
medium.
results
suggest
that
designed
could
be
in
terms
its
reusability,
simplicity,
high
capacity,
cost-effectiveness,
excellent
range,
fast
kinetics.
