Abstract
Coagulation
is
a
simple
and
cost-effective
water
treatment
method
that
does
not
work
well
in
removing
multiple
cationic
anionic
heavy
metals
simultaneously
from
drinking
water.
Titanium
potassium
oxalate
(K
2
TiO(C
O
4
)
),
fur
tanning
reagent,
was
found
to
be
able
efficiently
remove
arsenite
(As(III)),
arsenate
(As(V)),
Cd
simultaneously.
A
dose
of
120
µmol/L
K
could
more
than
90%
As
meet
the
standards
when
their
initial
concentrations
were
10
times
maximum
concentration
limits,
whereas
traditional
coagulants,
such
as
Fe
(SO
3
Al
,
failed
standards.
Additionally,
coagulation
consumes
natural
hardness
(Ca
2+
/Mg
produce
softer
releases
healthy
+
by-product.
The
mechanism
study
indicated
reacted
with
calcium
ions
form
oxalate,
while
residual
titanium
hydrolyzed
hydrous
oxide.
Arsenic
removed
primarily
via
complexation
oxide,
combined
effect
adsorption
by
oxide
mixed-crystal
formation
oxalate.
This
provides
an
efficient
coagulant
for
simultaneously,
which
can
applied
provide
safe
Molecules,
Год журнала:
2023,
Номер
28(17), С. 6241 - 6241
Опубликована: Авг. 25, 2023
Efficient
and
excellent
nanoparticles
are
required
for
the
degradation
of
organic
dyes
in
photocatalysis.
In
this
study,
silver-manganese
oxide
(Ag-Mn-NPs)
were
synthesized
through
a
wet
chemical
precipitation
method
characterized
as
an
advanced
catalyst
that
has
enhanced
photocatalytic
activity
under
sunlight
irradiation.
The
using
scanning
electron
microscopy
(SEM),
XRD,
UV-vis
light
spectra,
energy-dispersive
X-ray
(EDX)
spectroscopy,
revealing
their
spherical
agglomerated
form.
EDX
spectra
confirmed
composition
nanoparticles,
indicating
presence
These
bimetallic
employed
photocatalysts
malachite
green
(MG)
dye
irradiation
aqueous
medium.
study
investigated
effects
various
parameters,
such
time,
dosage,
recovered
concentration,
pH,
on
dye's
photodegradation.
results
showed
Ag-Mn
exhibited
high
activity,
degrading
92%
100
min.
A
longer
time
led
to
increased
degradation.
Moreover,
higher
dosage
resulted
percentage,
with
91%
achieved
0.0017
g
photocatalyst
60
Increasing
pH
medium
also
degradation,
99%
at
10
However,
photodegradation
rate
decreased
increasing
concentration.
demonstrate
potential
reliable
visible-light-responsive
efficient
pollutants
wastewater
treatment.
Sustainability,
Год журнала:
2023,
Номер
15(13), С. 10364 - 10364
Опубликована: Июнь 30, 2023
Methylene
blue
(MB)
adsorption
was
performed
on
a
natural
material
powder
of
Cynara
scolymus
as
new
inexpensive
adsorbent
identified
by
Cs.
To
analyze
the
Cs
material,
FTIR,
SEM,
isoelectric
point
(pHpzc)
analysis,
TGA,
and
DRX
were
used.
The
maximum
experimental
capacity
203.333,
192.187,
179.380
mg•g−1
at
298,
303,
313
K,
respectively.
correlation
coefficients
(R2)
average
percentage
errors
APE
(%)
values
for
kinetic
isotherms
models
indicated
that
kinetics
followed
pseudo-nth
order
model
traditional
isotherm
Redlich–Peterson
(R–P)
correctly
described
data
obtained
steric,
energetic,
thermodynamic
characteristics
most
relevant
advanced
(double-energy
single-layer
(AM
2))
analyzed
in
detail.
number
active
sites
first
receptors
(n1)
determined
to
be
0.129,
0.610,
6.833,
whereas
second
(n2)
1.444,
1.675,
2.036
This
presence
both
multi–docking
multimolecular
modes
style
MB
ions
(n1),
while
only
mode
(n2).
Thermodynamic
demonstrated
onto
is
spontaneous
feasible.
Journal of environmental chemical engineering,
Год журнала:
2024,
Номер
12(3), С. 112643 - 112643
Опубликована: Март 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.
Macromolecular Rapid Communications,
Год журнала:
2024,
Номер
45(17)
Опубликована: Июнь 15, 2024
The
Expansion
of
modern
industry
underscores
the
urgent
need
to
address
heavy
metal
pollution,
which
is
a
threat
human-health
and
environment.
Efforts
are
underwent
develop
precise
technologies
for
detecting
ions
(M
Molecules,
Год журнала:
2024,
Номер
29(2), С. 418 - 418
Опубликована: Янв. 15, 2024
In
the
present
investigation
of
copper
ferrite,
a
CuFe2O4
nanocomposite
adsorbent
was
synthesized
using
sol–gel
method,
and
its
relevance
in
adsorptive
elimination
toxic
Congo
red
(CR)
aqueous
phase
examined.
A
variety
structural
methods
were
used
to
analyze
nanocomposite;
as-synthesized
had
agglomerated
clusters
with
porous,
irregular,
rough
surface
that
could
be
seen
FE-SEM,
it
also
contained
carbon
(23.47%),
oxygen
(44.31%),
(10.21%),
iron
(22.01%)
elemental
composition
by
weight.
Experiments
designed
achieve
most
optimized
system
through
utilization
central
composite
design
(CCD).
The
highest
uptake
CR
dye
at
equilibrium
occurred
when
initial
pH
value
5.5,
adsorbate
concentration
125
mg/L,
dosage
3.5
g/L.
Kinetic
studies
conducted,
they
showed
adsorption
process
followed
pseudo-second-order
(PSO)
model
(regression
coefficient,
R2
=
0.9998),
suggesting
chemisorption
mechanism,
overall
reaction
rate
governed
both
film
pore
diffusion
molecules.
which
molecules
taken
up
onto
particle
revealed
interactions
involving
electrostatic
forces,
hydrogen
bonding,
filling.
According
isotherm
studies,
data
exhibited
strong
agreement
Langmuir
(R2
0.9989),
demonstrating
maximum
monolayer
capacity
(qmax)
64.72
mg/g
6
302
K.
Considering
obtained
negative
ΔG
positive
ΔHads
ΔSads
values
across
all
tested
temperatures
thermodynamic
investigations,
confirmed
characterized
as
endothermic,
spontaneous,
feasible,
an
increased
level
randomness.
developed
this
study
is
anticipated
find
extensive
application
effluent
treatment,
owing
excellent
reusability
remarkable
capability
effectively
remove
comparison
other
adsorbents.
