ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(5)
Published: Jan. 30, 2025
Abstract
According
to
the
research,
zeolitic
imidazolate
framework
(ZIF‐67)
and
graphene
oxide
(GO)
nanosheets
were
synthesized
with
a
guar
gum
(GG)
biopolymer
substrate
form
two‐component
hybrid
biocomposites:
GO/ZIF‐67
(GOZ),
GG/ZIF‐67
(GZ),
three‐component
GO/GG/ZIF‐67
(GGZ)
polymer.
These
composites
used
adsorb
malachite
green
(MG)
cationic
dye
from
an
aqueous
solution
at
room
temperature.
The
chemical
fractions,
morphological
structural
properties
of
biocomposites
determined
using
Fourier
transform
infrared
spectrometer
(FTIR),
scanning
electron
microscope
(SEM),
X‐ray
diffraction
(XRD),
Brunauer–Emmett–Teller
(BET)
analyses.
adsorption
MG
was
carried
out
on
polymer
under
different
experimental
conditions.
high
surface
area
GZ,
GOZ,
GGZ
1362.89,
754.89,
833.67
m
2
g
−1
,
respectively,
total
pore
volume
0.90
cm
3
for
0.51
GOZ
GGZ,
respectively.
removal
pollutant
follows
pseudo‐second
order
model
Langmuir
model.
mechanism
involves
hydrogen
bonding,
π‐π
stacking,
electrostatic
interactions.
showed
maximum
efficiency
66.6%,
74.4%,
90.1%,
data
show
that
after
cycles
90%,
86%,
82%.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Precise
prediction
of
adsorption
in
a
multicomponent
system
is
vital
for
successful
design
dye-contaminated
industrial
wastewater
treatment
processes.
The
present
work
looks
the
reason
behind
failure
competitive
Langmuir
model
(CLM)
to
describe
such
systems,
while
(LM)
successfully
describes
process
single
dye
solution.
With
that
end,
derivations
LM
and
CLM
have
been
revisited,
criterion
universality
active
sites
has
defined.
Attempts
made
based
on
parameters
determined
from
solutions.
Three
dyes
(safranin,
crystal
violet,
methylene
blue)
two
adsorbents
[activated
carbon
(AC)
coconut
fiber
(CF)]
are
subjected
BET
tests.
AC
complies
with
criterion,
CF
does
not.
site
density
estimated
14-18
folds
lower
18-38
higher
CF,
than
those
done
test.
predicts
equilibrium
both
binary
systems
satisfactorily,
but
there
large
gap
between
predicted
experimental
values
concentration.
It
argued
liquid
occurs
through
different
types
interactions,
hence
even
should
not
be
presented
by
Gels,
Journal Year:
2023,
Volume and Issue:
9(8), P. 664 - 664
Published: Aug. 17, 2023
Chitosan-based
hydrogels
have
gained
significant
attention
for
their
potential
applications
in
water
treatment
and
purification
due
to
remarkable
properties
such
as
bioavailability,
biocompatibility,
biodegradability,
environmental
friendliness,
high
pollutants
adsorption
capacity,
capacity.
This
article
comprehensively
reviews
recent
advances
chitosan-based
hydrogel
materials
applications.
The
synthesis
methods,
structural
properties,
performance
of
are
critically
analyzed.
incorporation
various
nanomaterials
into
hydrogels,
nanoparticles,
graphene,
metal-organic
frameworks,
has
been
explored
enhance
performance.
mechanisms
purification,
including
adsorption,
filtration,
antimicrobial
activity,
also
discussed
detail.
the
removal
pollutants,
heavy
metals,
organic
contaminants,
microorganisms,
from
sources
is
highlighted.
Moreover,
challenges
future
perspectives
illustrated.
Overall,
this
provides
valuable
insights
current
state
art
regarding
highlights
addressing
global
pollution
challenges.
Critical Reviews in Environmental Science and Technology,
Journal Year:
2023,
Volume and Issue:
53(19), P. 1709 - 1730
Published: April 19, 2023
Adsorption
technology
is
a
hot
topic
in
the
field
of
dye
removal,
and
higher
adsorption
capacity
one
eternal
themes.
Ionic
dyes
account
for
more
than
90%
literature
on
recent
decade.
In
this
article,
various
physical
chemical
mechanisms
are
combed
detail,
electrostatic
interaction
major
mechanism
ionic
adsorption.
The
key
to
improving
increase
force/surface
charge
adsorbents.
Moreover,
different
modification
methods
improve
by
changing
properties
adsorbents
were
reviewed,
including
grafting
functional
groups,
composite,
adsorbent
structural
modulation.
practical
prospects
each
method/substance
highlighted
discussed
from
perspectives
performance,
preparation
processes,
cost,
toxicity.
This
review
mainly
includes
(1)
classification
dyes;
(2)
types,
performance
application
grafted
ligands
substances
applied
compositing;
(3)
limitations
regulation
methods;
(4)
research
progresses
amphoteric
adsorbents;
(5)
prospect
development
industrial-scale
application.
attempts
provide
detailed
reference
via
regulation.
Results in Chemistry,
Journal Year:
2023,
Volume and Issue:
5, P. 100766 - 100766
Published: Jan. 1, 2023
In
this
investigation,
MgAl-Charcoal
activated
was
prepared
and
characterized
using
XRD,
FTIR,
BET,
SEM
analyses.
exhibited
characteristic
peaks
at
2θ
=
10.85°
(0
0
3),
21.64°
2),
34.60°
1
5),
60.65°
3).
FTIR
absorption
spectra
of
typical
3448,
1635,
1381,
601
cm−1.
The
surface
areas
MgAl,
charcoal
activated,
were
8.963,
757.845,
1449.020
m2/g,
respectively.
area
MgAl
expanded
161
times
after
being
combined
with
activated.
surfaces
are
not
uniform
in
size
shape.
absorb
direct
yellow
more
than
methyl
orange
green.
significant
drop
concentration
suggested
that
the
structure
smaller
correlation
coefficient
revealed
adsorption
followed
pseudo-second-order
Langmuir
model.
maximum
capabilities
101.010
mg/g,
71.429
133.333
fifth
cycle,
regeneration
efficiency
decreased
from
70.652
%
to
29.762
%,
68.711
37.785
92.003
66.382
These
findings
show
effective
for
yellow.
