Modern Physics Letters B,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 24, 2024
Herein,
a
novel
hydrogel
(HG-cl-poly(AA))
was
synthesized
by
grafting
acrylic
acid
(AA)
onto
Hing
gum
(HG)
using
methylene-bis-acrylamide
(MBA)
as
cross-linker
and
ammonium
persulfate
(APS)
an
initiator
in
hot
air
oven.
The
percentage
swelling
of
the
examined
optimizing
various
reaction
parameters
to
ensure
its
maximum
percentage.
formation
crosslinked
networks
confirmed
Fourier-Transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
field
emission
scanning
electron
microscopy
(FESEM),
thermogravimetric
analysis
(TGA)
techniques.
surface
area
hydrophilicity
prepared
were
determined
Brunauer–Emmett–Teller
analyzer
wettability
studies,
demonstrating
clear
correlation
with
adsorption.
adsorption
crystal
violet
(CV)
dye
on
studied
via
batch
system
based
amount
adsorbent,
immersion
time,
pH
level,
initial
concentration.
showed
99%
removal
rate
excellent
capacity
492.61[Formula:
see
text]mg/g
due
electrostatic,
H-bonding,
dipole–dipole
interactions
between
adsorbent
molecules.
results
further
analyzed
Langmuir,
Freundlich,
Tempkin
isotherm
models.
study
suggests
consistency
pseudo-second-order
kinetic
model
([Formula:
text]),
supported
best
data
fit
Langmuir
text]).
thermodynamic
indicated
that
process
is
endothermic
spontaneous.
Regeneration
(desorption)
studies
could
remove
CV
from
aqueous
solution
maintain
highest
even
after
multiple
desorption
cycles.
Therefore,
HG-cl-poly(AA)
be
potential
for
have
admirable
cleaning
aquatic
environment.
Case Studies in Chemical and Environmental Engineering,
Год журнала:
2024,
Номер
10, С. 100831 - 100831
Опубликована: Июль 1, 2024
This
synthesis
aimed
to
obtain
a
highly
stable,
biodegradable,
biocompatible,
and
swellable
superabsorbent
hydrogel
that
is
ecofriendly.
A
new
method
of
preparation
nanocomposite
based
on
Castor
plant
leaves
within
swelling
networks
developed.
Therefore,
Sodium
Alginate-g-Poly
(Itaconic
acid-co-Sodium
4-Styrenesulfonate)/Castor
leaves,
(SA-g-P(ITA-co-NaSS)/CPL)
was
prepared
by
free
radical
copolymerization
using
potassium
persulfate
(KPS)
as
an
initiator
N,N-methylene
bisacrylamide
(MBA)
cross-linker
in
aqueous
solutions.
Characterization
the
surface
has
been
done
Fourier-transform
infrared
spectroscopy
(FTIR)
shown
all
functional
groups
for
(SA-g-P(ITA-co-NaSS)/CPL),
field
emission
scanning
electron
microscopy
(FESEM)
displayed
smooth,
wrinkled
versus
hydrogel's
rough
irregular
surface.
BG-loaded
exhibited
sheet-like
morphology,
spherical
shapes
nonhomogeneous
distribution,
transmission
(TEM)
confirmed
CPL
interaction
with
matrix,
evidenced
dark
regions,
Energy
dispersive
X-Ray
(EDX)
analysis
performed
investigate
elemental
composition
nanocomposite,
X-ray
diffraction
(XRD)
pattern
matrix
disappear
hydrogel.,
thermogravimetric
(TGA)
determine
thermal
stability
synthesized
represented
complete
breakdown
at
600–750
°C,
Brunauer−
Emmett−Teller
(BET)
shows
specific
area
total
pore
volume
0.019
cm3
g−1.
The
effect
onto
Brilliant
Green
(BG)
dye
removal,
exerted
via
adsorbent
through
electrostatic
interactions,
hydrogen
bonds.
Under
optimal
conditions
(Co
=
700
mg.
L−1,
pH
7,
t
1
h,
wt.
0.05
g
T
25
°C),
maximum
adsorption
efficiency
BG
1260.34
higher
uptake
capacity
resulting
efficiencies
above
75–95
%
across
broad
spectrum
initial
concentrations,
solution,
temperatures.
Thus,
after
1h
equilibrium
time,
it
used
saturation
adsorbate
Freundlich
isotherm
models
pseudo-second
order
kinetic
were
found
be
best
fitting
kinetics
data.
Thermodynamic
parameters
show
(ΔG
<
0)
spontaneous
(ΔH
endothermic.
novelty
this
work
being
first
report
supported
CPL,
investigation
its
carried
out
model
pollutant
molecule,
namely
dye,
mechanisms.
promising
novel
absorbance,
proven
high
up
6
sequential
recycles.
Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
141(15)
Опубликована: Фев. 7, 2024
Abstract
This
study
presents,
the
synthesis
of
microwave‐assisted
biodegradable
polyacrylamide
grafted
tragacanth
gum
(Tr‐g‐PAM),
which
was
utilized
as
a
bioflocculant
to
treat
textile
effluent
and
compared
against
conventional
flocculant.
The
reaction
parameters
for
maximal
grafting
were
optimized
by
varying
factors.
acrylamide
onto
backbone
Tragacanth
confirmed
FTIR,
XRD,
TGA,
SEM–EDX
studies.
Swelling
studies
performed
in
deionized
water
different
salts.
Tr‐g‐PAM
exhibited
pH
temperature‐dependent
swelling
behavior.
Biodegradation
graft
copolymer
carried
out
soil
composting
method.
showed
91.54%
degradation
within
60
days,
Tragacanth,
degraded
15
days.
SEM
techniques
used
describe
various
phases
biodegradation.
Flocculation
performances
copolymers
evaluated
simulated
colloidal
wastewater.
Influencing
variables
such
dosage,
pH,
flocculation
mixing
speed
examined.
maximum
decolorization
at
optimum
6
120
mg/L
dosage
found
be
91.8%
88.5%
Tragacanth.
In
conclusion,
with
better
efficiency
than
that
other
commercial
flocculants
would
promising
choice
an
eco‐friendly
adsorbent
removal
contaminants
from
resources.
