Arabian Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
16(11), P. 105248 - 105248
Published: Sept. 11, 2023
The
adsorption
process
is
one
of
the
most
cost-effective
methods
for
eliminating
various
types
pollutants
from
water.
Clay
minerals
can
be
converted
into
biosorbents
environmental
remediation.
This
literature
review
summarizes
different
natural
clays,
their
crystal
structures,
classifications,
physical
and
chemical
properties,
industrial
applications.
Also
main
results
recent
studies
on
mechanism
clay
materials
to
eliminate
heavy
metals
highly
emerging
toxic
dyes.
Langmuir
Freundlich
models
are
commonly
used
isotherms
in
previous
studies.
In
addition,
kinetics
majority
dyes
using
clays
based
pseudo-second-order
model.
High
capacities
909.09
mg
g-1
synthetic
179
were
observed.
article
suggests
that
modified
by
improve
efficiencies
increasing
specific
surface
areas.
clays'
low
cost
ability
regenerate
show
these
environmentally
friendly
beneficial
ecology.
ACS Engineering Au,
Journal Year:
2023,
Volume and Issue:
3(6), P. 443 - 460
Published: Nov. 1, 2023
Adsorption
is
a
promising
technique
for
the
removal
of
persistent
contaminants,
since
it
relatively
cheap
process
with
low
energy
requirements
and
does
not
produce
secondary
contamination.
However,
large-scale
implementation
an
adsorption
usually
involves
dual
column
either
pressure
swing
or
temperature
operations.
Therefore,
reusability
adsorbents
key
characteristic
to
consider
evaluate
but
often
overlooked
during
development
new
materials.
To
be
reused,
adsorbent
should
successfully
release
contaminant
by
desorption
regeneration
step
without
compromising
chemical
physical
stability
matrix.
The
efficiency
desorption/regeneration
methods
depends
greatly
on
characteristics
nature
adsorbents,
mechanisms
responsible
adsorbent–adsorbate
interactions.
This
review
focuses
strategies
that
have
been
used
biobased
hydrogels
hydrogel
composites,
materials
applied
in
wastewater
contaminants.
can
divided
into
methods.
include
use
agents,
photocatalytic
oxidation,
CO2
bubbling;
thermal
ultrasonic
treatments.
These
shown
different
efficiencies
as
well
specific
advantages
drawbacks
need
considered
select
most
suitable
method
application.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Aug. 31, 2023
Abstract
Utilizing
Glutaraldehyde
crosslinked
sodium
carboxymethyl
cellulose
(CMC-GA)
hydrogel
and
its
nanographene
oxide
composite
(CMC-GA-GOx),
an
effective
cellulose-graphene
biobased
composites
adsorbent
was
developed
for
the
adsorption
removal
of
methylene
blue
(MB)
cationic
dye
contaminate
from
industrial
wastewater.
The
CMC-GA-GOx
were
characterized
using
FTIR,
RAMAN,
TGA,
SEM,
EDX
analysis
instruments.
Through
batch
experiments,
several
variables
affecting
MB
dye,
including
biocomposites
GO:CMC
composition,
time,
pH
temperature,
initial
concentration,
dosage,
NaCl
investigated
under
different
conditions.
maximum
percentages
ranged
between
93
98%.
They
obtained
CMC-GA-GO
102
with
20%
GO
weight
percent,
time
25
min,
temperature
°C,
concentrations
10–30
ppm,
7.0,
0.2
g
dose.
experimental
data
process
suit
Langmuir
isotherm
more
closely
a
maximal
monolayer
capacity
76.92
mg/g.
followed
kinetic
model
pseudo-second
order.
exothermic
spontaneous
thermodynamic
standpoint.
In
addition,
results
demonstrated
that
operates
most
effectively
at
low
temperatures.
Finally,
reusability
has
been
proved
through
10
successive
cycles
where
only
14%
percentage
lost.
These
suggest
may
be
inexpensive
reusable
removing
organic
dyes
Polymer Bulletin,
Journal Year:
2024,
Volume and Issue:
81(7), P. 6603 - 6640
Published: Feb. 15, 2024
Abstract
The
increase
in
the
world
population
and
decrease
clean
water
resources
people's
interest
purification
technologies.
Many
industries,
such
as
textile
industry,
leather
cosmetics
food
color
their
products
with
substances
dyes
pigments.
In
this
study,
a
cheap,
useful,
innovative,
environmentally
friendly,
sustainable
adsorbent
was
developed
for
removal
of
Methylene
Blue
(MB),
one
that
is
harmful
to
environment.
fruit
tree
cultivation,
addition
product,
very
high
amounts
by-products/waste
(branches,
bark,
leaves,
seeds,
shells,
etc.)
are
produced.
direction,
walnut
olive
wastes
were
immobilized
chitosan,
made
magnetic
(m-WCH
m-OCH),
adsorption
MB
on
adsorbents
examined
batch
system.
Characterization
synthesized
biocomposite
performed
by
FT-IR,
SEM,
EDX
XRD
analyzes.
It
has
been
thoroughly
described
how
pH
solution
dye
compares
PZC
surface.
values
m-WCH
m-OCH
5.2
5.5
respectively.
biocomposites
depends
environment
(3–8),
amount
(2–10
gL
−1
),
contact
time
(5–360
min),
temperature
(25–55
°C)
initial
concentration
(10–250
ppm)
function.
obtained
data
evaluated
kinetic
isotherm
models.
Using
equilibrium
from
studies
using
adsorbents,
suitability
Langmuir,
Freundlich,
Stachard,
Dubinin–Radushkevich
Temkin
models
examined.
empirical
showed
agreement
Langmuir
model.
maximum
capacity
estimated
be
85.47
mg
g
53.48
,
result
higher
selectivity
m-OCH.
Among
applied,
pseudo-second-order
model
identified
highest
regression
coefficients.
light
these
results,
it
determined
there
new
promising
natural
origin,
capacity,
lower
cost,
alternatives
commercially
used
aqueous
media.
Graphical
abstract
Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(3), P. 112643 - 112643
Published: March 29, 2024
Herein
an
extensive
review
of
the
use
nanomaterials
and
dendrimers
for
water
treatment
is
presented.
The
included
in
tackling
various
challenges,
including
achieving
dye
removal,
antibacterial
effects,
photocatalysis,
heavy
metal
nanomaterial
recycling,
nanowaste
removal.
highlights
existing
literature
bottlenecks
suggests
potential
remedies,
with
a
focus
on
availability
low-cost,
recyclable,
bimetallic
nanomaterials.
Moreover,
significance
taking
into
account
practical
sample
collection
analysis,
such
as
industrial
effluents
samples
analysis.
provides
valuable
insights
advances
development
nanomaterial-based
technologies
by
critically
examining
research.
