Water Air & Soil Pollution,
Год журнала:
2024,
Номер
235(8)
Опубликована: Июль 10, 2024
Abstract
In
this
study,
the
efficacy
of
sono-assisted
adsorption
for
removal
methyl
violet
2B
(MV-2B)
was
investigated.
A
magnetic
adsorbent
synthesized
using
kaolin
and
TiO
2
,
designated
as
KTF.
Various
analyses
including
scanning
electron
microscopy
with
energy
dispersive
spectroscopy
(SEM–EDS),
Brunauer–Emmett–Teller
(BET),
Fourier
transform
infrared
(FTIR),
X-ray
powder
diffraction
(XRD),
Zeta
potential
vibrating
sample
magnetometer
(VSM)
were
conducted
to
characterize
structure
The
BET
surface
area
pore
volume
KTF
determined
be
65.279
m
/g
0.072
cm
3
/g,
respectively.
VSM
analysis
confirmed
superparamagnetic
property
effect
contact
time,
initial
MV-2B
concentration,
amount,
temperature,
ionic
strength
pH
solution
on
Sono-assisted
achieved
at
a
rate
85.6%
under
optimal
conditions:
original
pH,
amount
0.2
g/100
mL,
concentration
20
mg/L,
time
15
min,
temperature
22
°C.
Conversely,
lower
efficiencies
observed
conventional
methods
employing
shaking
(37%)
stirring
(60.5%).
kinetics
followed
pseudo-second
order
model,
while
Freundlich
isotherm
model
exhibited
superior
fit
(R
=
0.985)
in
describing
equilibrium
behavior
compared
Langmuir
Temkin
models.
Journal of Composites Science,
Год журнала:
2024,
Номер
8(2), С. 59 - 59
Опубликована: Фев. 4, 2024
In
this
work,
novel
multifunctional
electrospun
nanofibrous
membranes
made
of
polyamide
(PA6)
and
loaded
with
silica
(SiO2)
and/or
titanium
dioxide
(TiO2)
nanoparticles
were
fabricated.
SiO2
NPs
first
prepared
then
characterized
by
TEM,
FE-SEM,
FTIR,
using
XRD
techniques,
confirming
the
formation
cristobalite
tetragonal
crystals
high
purity.
Different
mats,
NPs,
TiO2
or
both
investigated.
Morphological
studies
indicated
that
tend
to
be
arranged
along
fiber
surface,
also
promoting
anatase
nanorods
when
they
are
mixed
into
nanofibers.
last
scenario,
mechanical
tests
have
demonstrated
presence
contributed
balancing
response
fibers
negatively
affected
NPs—as
confirmed
tensile
tests.
More
interestingly,
did
not
affect
antibacterial
against
different
bacteria
populations
(i.e.,
Escherichia
coli,
Klebsiella
pneumonia,
Staphylococcus
aureus,
Bacillus
subtilis,
Candida
albicans),
which
is
mainly
ascribable
particles.
Accordingly,
TiO2-
TiO2/SiO2-loaded
showed
higher
methylene
blue
(MB)
absorption
values—i.e.,
26
mg/g
27
mg/g—respectively,
compared
SiO2-loaded
(23
mg/g),
kinetics
in
good
agreement
second-order
kinetic
model.
The
obtained
findings
pave
way
for
a
promising
use
water
purification.
Materials Research Express,
Год журнала:
2024,
Номер
11(5), С. 055504 - 055504
Опубликована: Апрель 19, 2024
Abstract
Methylene
blue
(MB)
is
a
heterocyclic
aromatic
chemical
compound
used
as
dye
in
various
dyeing
processes.
The
accumulation
of
such
an
organic
poses
significant
threat
to
both
the
environment
and
human
health.
Therefore,
numerous
biological,
physical,
processes
have
been
established
remove
MB
dye,
with
adsorption
being
most
predominant
dye-based
treatment
technology.
In
this
context,
aim
work
was
evaluate
properties
activated
carbon
derived
from
olive
pomace
against
methylene
blue.
To
end,
scanning
electron
microscopy
(SEM),
energy
dispersive
x-ray
spectroscopy
(EDS),
Fourier
transform
infrared
(FT-IR)
analyses
were
carried
out
confirm
on
structures.
addition,
effect
contact
time,
pH,
initial
concentration,
adsorbent
dose,
temperature
efficiency
investigated.
On
other
hand,
kinetic
isothermal
models
further
understand
mechanism,
which
showed
good
correlation
pseudo-second-order
model
Langmuir
isotherm.
Finally,
thermodynamic
analysis
favorable
conditions
for
physisorption,
process
endothermic
spontaneous.
Journal of Water Process Engineering,
Год журнала:
2022,
Номер
49, С. 102962 - 102962
Опубликована: Июнь 30, 2022
Polymeric
adsorbents
(PAs)
have
been
gaining
increased
attention
for
application
in
industrial
wastewater
(WW)
treatment.
However,
most
studies
on
evaluating
PAs
specifically
emulsified
oil
removal
are
currently
limited
to
performance
screening
through
batch
mode
testing.
Hence,
this
paper
presents
a
thorough
fixed-bed
assessment
of
advanced
the
from
WWs.
A
unique
custom-built
column
setup
was
developed
with
continuous
test
protocol
that
involves
both
adsorption
and
regeneration
media.
robust
procedure
also
established
automatically
prepare
representative
synthetic
produced
water
(PW)
containing
oil-water
emulsions.
Four
cutting-edge
were
evaluated,
out
which
two
being
tested
first
time
targeting
removal.
Experimental
tests
conducted
address
resin
capacity,
efficiency,
reproducibility
repeat
cycles.
PA2
treated
168
±
58
bed
volumes
(BVs)
achieving
lowest
capacity
44
14
mg/g.
Higher
comparable
capacities
observed
PA1
PA3
at
~100
mg/g,
yet
found
capable
treating
807
3
BVs
against
548
115
measured
PA3.
PA4
1219
86
301
27
mg/g
indicate
its
strong
potential
WW
treatment
application.
This
data
can
provide
reference
comparison
when
testing
other
novel
resins
Future
will
focus
using
real
PW
their
long-term
via
pilot
Water,
Год журнала:
2023,
Номер
15(17), С. 3093 - 3093
Опубликована: Авг. 29, 2023
Many
contaminants
such
as
heavy
metals,
dyes
and
hydrocarbon
compounds
are
annually
generated
by
industrial
activities
discharged
into
water
sources.
They
have
destructive
impacts
on
the
environment.
To
eliminate
these
toxic
from
aqueous
media,
sorption
can
be
considered
a
proper
efficient
process,
it
has
indicated
high
efficiency
for
removing
organic
contaminants.
This
paper
entails
comprehensive
evaluation
of
different
pollutants,
pros
cons
process
in
comparing
types
adsorbents
investigating
recyclability
composites.
Moreover,
mechanism
kinetic
behavior
investigated
using
biocomposites
nanocomposites.
future
perspectives
nanocomposites
eliminating
discussed.
Based
investigations,
large
number
been
utilized
with
performance
so
far,
including
SiO2/MnFe2O4/ZIF-8
MOF,
magnetite/MWCNTs,
nano
zerovalent
iron,
barium/Cobalt/polyethylene
glycol
(PEG),
graphene
oxide/Fe3O4,
kaolin/CuFe2O4
Fe3O4@UiO-66.
polyaniline/sodium
alginate/Oscillatoria
filamentous
cyanobacterium
biomass,
cow
bones/zeolite/coconut
biocomposite
AC
derived
melamine
sucrose
excellent
removal
pollutants.
reusability
study
shows
that
poly(N-isopropylacrylamide)/Fe3O4
corn
stalk
biomass/chitosan/Fe3O4
significant
stability
compared
to
other
composites
elimination
