npj Clean Water,
Journal Year:
2023,
Volume and Issue:
6(1)
Published: April 25, 2023
Abstract
Degradation
of
organic
contaminants
into
less
toxic
substances
is
the
best
option
to
remove
these
compounds
rather
than
using
conventional
techniques.
The
sulfate
radical-based-advanced
oxidation
process
an
effective
strategy
that
degrades
by
activating
peroxymonosulfate
(PMS).
Such
a
generates
singlet
oxygen
(
1
O
2
),
hydroxyl
$$^
\bullet
\!{{{\mathrm{OH}}}}$$
∙OH
and
$${{{\mathrm{SO}}}}_4^{
\bullet\!
-
}$$
xmlns:mml="http://www.w3.org/1998/Math/MathML">SO4∙−
)
radicals.
\!-
distinguished
its
high
selectivity
activity
toward
degradation
contaminates
compared
other
Various
catalysts
are
employed
in
PMS
activation
including
layered
doubled
hydroxides
(LDHs),
which
characterized
their
facile
synthesis
catalytic
activity.
This
review
article
first
attempt
compile
recent
progress
common
pollutants
aromatic
compounds,
pharmaceutical
residues,
dyes
via
LDH-based
catalysts.
pathways,
reaction
parameters’
influence,
stability
LDHs,
comparisons
between
different
investigated
this
work.
Journal of Porous Materials,
Journal Year:
2022,
Volume and Issue:
30(2), P. 607 - 618
Published: Oct. 27, 2022
Abstract
In
this
investigation,
new
porous
adsorbent
beads
were
formulated
via
the
incorporation
of
graphene
oxide
(GO)
into
cellulose
acetate
(CA)
for
adsorptive
removal
methylene
blue
(MB)
dye.
The
experimental
results
signified
that
adsorption
MB
dye
increased
with
increase
in
GO
ratio
from
10
to
25%.
addition,
process
obeyed
PSO
kinetic
model
and
Langmuir
isotherm
a
maximum
capacity
reaching
369.85
mg/g.
More
importantly,
it
was
proposed
mechanism
onto
GO@CA
proceeded
electrostatic
interactions,
H-bonding,
van
der
Waals
forces,
n-π
π
-π
interactions.
Besides,
fabricated
exhibited
an
excellent
ability
recycle
reuse
after
five
successive
cycles.
there
high
selectivity
towards
molecules
presence
co-existing
cations
such
as
Fe
2+
,
Zn
Cu
Ni
.
Scientific Reports,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Sept. 15, 2022
Abstract
The
jeopardy
of
the
synthetic
dyes
effluents
on
human
health
and
environment
has
swiftly
aggravated,
threatening
survival.
Hence,
sustained
studies
have
figured
out
most
acceptable
way
to
eliminate
this
poisonous
contaminant.
Thereby,
our
investigation
aimed
fabricate
montmorillonite/magnetic
NiFe
2
O
4
@amine-functionalized
chitosan
(MMT-mAmCs)
composite
as
a
promising
green
adsorbent
remove
cationic
methylene
blue
(MB)
crystal
violet
(CV)
from
wastewater
in
neutral
conditions.
Interestingly,
MMT-mAmCs
carries
high
negative
charges
at
wide
pH
range
11
clarified
zeta
potential
measurements,
asserting
its
suitability
adsorb
contaminants.
In
addition,
experimental
study
confirmed
that
optimum
both
MB
CV
was
7,
inferring
ability
simple
process
Furthermore,
ferromagnetic
behavior
is
additional
merit
provides
facile,
fast,
flawless
separation.
Notably,
as-fabricated
revealed
an
auspicious
adsorbability
towards
adsorptive
removal
CV,
since
maximum
adsorption
capacity
were
137
118
mg/g,
respectively.
Moreover,
isotherm
kinetic
investigatins
depicted
fitted
Langmuir
Pseudo
2nd
order
models,
Besides,
advanced
preserved
satisfactory
characteristics
with
maximal
efficacy
exceeding
87%
after
reuse
for
ten
consecutive
cycles.
More
importantly,
efficiently
adsorbed
real
agricultural
water,
Nile
river
water
samples
medium,
reflecting
potentiality
be
superb
reusable
candidate
pollutants
their
aquatic
media.
Applied Water Science,
Journal Year:
2023,
Volume and Issue:
13(2)
Published: Jan. 18, 2023
Abstract
Herein,
a
novel
sandwich-like
α
-ketoglutaric
acid
Schiff
base-aminated
chitosan
composite
(
-kGl-AmCsSB)
was
fabricated
by
reacting
and
aminated
chitosan.
The
as-fabricated
-kGl-AmCsSB
inspected
diversified
characterization
tools
to
determine
its
morphology,
surface
charge,
chemical
composition
as
well
define
the
linkage
pathway
between
-kGl
AmCs.
SEM
images
demonstrated
spongy
network
of
AmCs
with
interconnected
pores
structure
which
turned
quite
rough
due
free
amine
groups
Notably,
XPS
FTIR
spectra
suggested
group
experimental
results
implied
superior
adsorption
efficiency
Congo
red
(CR)
onto
since
maximum
capacity
q
max
)
reached
434.78
mg/g
at
25
°C
pH
3.
Based
on
kinetics
data,
CR
followed
pseudo-second-order
model.
Furthermore,
D-R
model
infers
that
occurred
via
physical
interactions
E
value
<
8
kJ/mol.
recyclability
test
implemented
for
five
cycles
R%
>
72%.
More
importantly,
mechanism
proposed
discussed.
Ultimately,
exhibited
advanced
performance
toward
along
excellent
reusability.
these
results,
we
recommend
more
modifications
exploiting
remarkable
advantages
applying
it
large
scale.
Arabian Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
16(5), P. 104640 - 104640
Published: Feb. 3, 2023
The
contamination
of
lead
in
wastewater
causes
water
quality
problems,
which
is
toxic
to
aquatic
organisms
and
environment,
so
treatment
required
before
discharging
receiving
water.
Chicken
eggshell
powder
(CP)
chicken
powder-doped
iron
(III)
oxide-hydroxide
(CPF)
were
synthesized,
characterized,
investigated
removal
efficiencies
by
batch
experiments,
adsorption
isotherms,
kinetics,
desorption
experiments.
specific
surface
area
pore
volume
CPF
higher
than
CP,
whereas
the
diameter
size
was
smaller
CP.
phase
structures
both
materials
demonstrated
semi-crystalline
phases
with
presenting
peaks
calcium
carbonate.
Their
morphologies
irregular,
rough,
uneven
surfaces.
In
materials,
they
detected
carbon,
calcium,
oxygen,
O–H,
N–H,
C=O,
C–O,
C–H.
point
zero
charges
(pHpzc)
CP
4.47
4.83.
For
a
efficiency
because
spending
less
material
dosage
contact
time
had
high
removals
at
concentration
50
mg/L
more
95%.
Thus,
addition
helped
increase
for
adsorption.
corresponded
Langmuir
model
while
Freundlich
model.
addition,
pseudo-second-order
kinetic
relating
chemisorption
process.
Moreover,
could
be
reusable
5
cycles
77%.
Therefore,
potential
apply
industrial
applications.
