Catalysts,
Год журнала:
2022,
Номер
12(6), С. 618 - 618
Опубликована: Июнь 6, 2022
To
achieve
low-carbon
and
sustainable
development
it
is
imperative
to
explore
water
treatment
technologies
in
a
carbon-neutral
model.
Because
of
its
advantages
high
efficiency,
low
consumption,
no
secondary
pollution,
electrocatalytic
oxidation
technology
has
attracted
increasing
attention
tackling
the
challenges
organic
wastewater
treatment.
The
performance
an
system
depends
mainly
on
properties
electrodes
materials.
Compared
with
instability
graphite
electrodes,
expenditure
noble
metal
boron-doped
diamond
hidden
dangers
titanium-based
oxide
titanium
sub-oxide
material
been
characterized
as
ideal
choice
anode
due
unique
crystal
electronic
structure,
including
conductivity,
decent
catalytic
activity,
intense
physical
chemical
stability,
corrosion
resistance,
cost,
long
service
life,
etc.
This
paper
systematically
reviews
electrode
preparation
Magnéli
phase
research
progress
electrochemical
advanced
recent
years,
technical
difficulties
highlighted.
Future
directions
are
further
proposed
process
optimization,
modification,
application
expansion.
It
worth
noting
that
sub-oxides
have
played
very
important
roles
degradation.
There
doubt
will
become
indispensable
materials
future.
Arabian Journal of Chemistry,
Год журнала:
2021,
Номер
15(3), С. 103648 - 103648
Опубликована: Дек. 18, 2021
2,4-Dinitrotoluene
(2,4-DNT)
has
been
found
to
be
an
important
petrochemical
compound,
which
is
primarily
employed
for
the
synthesis
of
tolylene
diisocyanate
and
production
dyes,
rubber,
explosives.
Since
this
compound
high
toxicity
carcinogenicity,
cautions
should
considered
when
wastewater
contaminated
with
DNTs
their
derivatives
released
into
environment.
Thus,
object
present
study
was
investigation
2,4-DNT
degradation
efficiency
using
three-dimensional
electrocatalytic
reactor
(3DER)
two
different
types
particle
electrodes
(granular
activated
carbon
(GAC)
magnetized
clinoptilolite
zeolite
(MCZ)@Fe3O4
nanoparticles)).
Preparation
graphite
(G)/β-PbO2
anode
done
by
electrochemically
depositing
PbO2
layers
on
sheets.
The
prepared
sheet
a
stainless-steel
316
(with
same
dimensions)
were
as
cathode,
respectively.
Field
emission
scanning
electron
microscopy
(FESEM),
X-ray
diffraction
analysis
(XRD),
energy-dispersive
spectroscopy
mapping
(EDS-mapping)
confirmed
successful
preparation
G/β-PbO2
anode.
surface
morphology,
chemical
composition
[email
protected]3O4
nanoparticles
electrode
determined
microscope
(SEM)
XRD
pattern.
To
determine
optimal
conditions,
we
response
methodology-based
central
composite
design
(RSM-CCD)
method.
According
observed
results,
higher
3DER
obtained
increasing
reaction
time
current
density
decreasing
pH
pollutant
concentration.
Studies
highlighted
initial
concentration
23.5
mg/L,
4.8
mA/cm2,
4.1,
electrolysis
50
min,
dose
=
6
g/250
cc
optimum
values
parameters.
efficiencies
GAC
under
mentioned
conditions
98.6%
96.5%,
Moreover,
oxygen
demand
(COD)
total
organic
(TOC)
removal
88.5%
80.9%
at
end
Furthermore,
results
indicative
enhancement
in
average
oxidation
state
(AOS)
(from
1.27
2.36)
(COS)
3.68)
process
reduction
COD/TOC
ratio
1.81
1.09);
these
signposts
effectiveness
system
providing
biodegradability
2,4-DNT.
Considering
could
lead
suitable
containing
DNT
resistant
contaminants
pretreatment
remarkable
applicability
enhancing
wastewater.
Arabian Journal of Chemistry,
Год журнала:
2022,
Номер
15(8), С. 103980 - 103980
Опубликована: Май 21, 2022
Furfural
is
as
one
of
the
major
environmental
pollutants
in
different
industrial
effluents
such
refinery
and
petrochemical,
paper,
cardboard
oil
refining.
This
toxic
chemical
irritant
causes
allergy
for
skin,
eyes
mucous
membranes.
study
was
developed
to
investigate
efficiency
a
three-dimensional
electrochemical
process
presence
granular
activated
carbon
magnetized
with
Fe3O4
(Fe3O4@GAC)
particle
electrodes
removal
furfural
from
aqueous
solution.
The
structural
morphological
featured
were
determined
via
BET,
VSM,
XRD,
FE-SEM
FTIR
techniques.
experiments
performed
based
on
central
composite
design
(CCD)
role
influencing
factors
including
reaction
time,
pH,
voltage
initial
concentrations
at
five
levels
evaluated.
Quadratic
model
high
correlation
coefficient
=
0.9872
(R2
(R2Adj
0.9724))
suggested
experimental
data
analysis.
performance
oxidation
towards
degradation
enhanced
substantially
after
adding
Fe3O4@GAC.
highest
(98.2%)
achieved
under
optimal
conditions
(furfural:
201
mg/L,
electrolysis
time:
69
min,
voltage:
19
V,
pH:
5.0).
Besides,
over
78
74
%
COD
TOC
removed
by
Fe3O4@GAC-based
process,
respectively.
Based
COD/TOC
ratio
average
state
(AOS)
index,
significant
increase
observed
biodegradability
intermediates
treatment.
Results
showed
that
promising
technology
efficient
furfural,
even
concentrations.
Liquid
chromatography–mass
spectrometry
(LC-MS)
analysis
pathway
could
be
oxidized
compounds
smaller
molecular
masses,
which
eventually
converted
dioxide
water.
Applied Water Science,
Год журнала:
2022,
Номер
12(5)
Опубликована: Апрель 4, 2022
Abstract
Textile
industries
use
large
amounts
of
water
and
chemicals
for
finishing
dying
processes.
The
chemical
structures
dyes
vary
enormously,
some
have
complicated
aromatic
that
resist
degradation
in
conventional
wastewater
treatment
processes
because
their
stability
to
sunlight,
oxidizing
agents,
microorganisms.
objective
this
research
is
compare
the
adsorption
efficiency
two
types
magnetic
activated
carbons
derived
from
Banana
peel
Salvia
seed
removal
basic
blue
41
dye.
faculty
produced
remove
dye
aqueous
solutions
via
batch
has
been
examined
under
several
operating
conditions
such
as
pH,
adsorbent
dose,
initial
adsorbate
concentration
contact
time.
cheap,
non-toxic
(AC)
were
characterized
by
scanning
electron
microscope
Brunauer-Emmett-Teller
analyses.
best
with
BPAC@
Fe
3
O
4
equal
pH
=
9,
AC
dose
0.5
g/L
,
50
mg/L
equilibrium
time
30
min,
optimal
SSAC@Fe
0.75
min.
This
study
followed
Langmuir
isotherm
model
well
regression
coefficient
R
2
0.9886
BPAC@Fe
0.9764
.
