International Journal of Environmental & Analytical Chemistry,
Год журнала:
2023,
Номер
unknown, С. 1 - 19
Опубликована: Июнь 25, 2023
Various
treatment
methods
are
widely
used
to
reduce
water
pollution.
Among
these
techniques,
heterogeneous
photocatalysis
and
non-thermal
plasma
technologies,
notably
dielectric
barrier
discharges,
currently
the
most
suitable
for
treatment.
However,
use
of
each
processes
alone
presents
certain
limitations.
In
this
study,
brilliant
blue
(BB)
photo-degradation
was
investigated
via
discharge
(DBD)
method.
The
impact
process
factors,
including
model
pollutant’s
initial
concentration
(from
5
10
mg/L),
airflow
rate
(240
L/h)
as
well
frequency
230
400
Hz),
upon
DBD’s
performance
in
terms
bright
decomposition
mineralisation
assessed.
latter
reached
49.5%
120
minutes,
assuming
optimised
operating
parameters
(BB
mg/L,
rated
at
240
L/h,
21
kV
an
applied
voltage
Hz).
It
could
be
said
that
DBD
processing
has
a
high
ecological
potential
aqueous
degradation
BB.
Scavenger
analysis
indicated
radicals
O2−°,
HO2°,
°OH,
represent
underlying
oxygen
reactive
species
decomposition.
study
showed
both
nitrogen
ROS
contribute
BB
removal.
For
approximating
real-life
requirements,
tests
were
performed
tap
synthetic
matrices.
BBs
significantly
inhibited
(%
Degradation
=
71.3,
%
Mineralisation
31.6)
65.41,
12),
compared
ultrapure
≥
98,
49.5),
after
min
irradiation.
This
proved
inorganic
organic
molecules
efficiency.
Thus,
our
pollutant
treated
by
combination
plasma-photocatalysis
system
using
cellulose
paper-supported
titanium
dioxide
photocatalyst,
which
significant
improvement
efficiency
versus
considering
either
separate
process.
Journal of environmental chemical engineering,
Год журнала:
2024,
Номер
12(3), С. 113073 - 113073
Опубликована: Май 14, 2024
Although
heterogeneous
photocatalysis
has
been
recognized
as
a
promising
technology
for
decontaminating
and
disinfecting
municipal
industrial
wastewater
over
the
last
few
decades,
it
not
yet
successfully
transitioned
from
laboratory-scale
research
to
real-world
applications.
This
limited
progress
is
attributed
inherent
physicochemical
properties
of
most
photocatalytic
materials
available,
which
exhibit
reduced
photoefficiency
under
visible
light
irradiation,
along
with
multiple
engineering
considerations.
comprehensive
review
delves
into
intricate
dynamics
reactions
kinetics,
exploring
several
types
reactors
elucidating
significance
employed
in
treatment.
critical
survey
systematically
examines
effectiveness
different
such
titania,
zinc
oxide
graphitic
carbon
nitride
are
commercially
applied
reactor
systems.
Understanding
role
these
essential
address
challenges
associated
Furthermore,
discussion
extends
beyond
technical
aspects
encompass
broader
landscape
hindering
commercialization
widespread
adoption
technologies.
By
critically
evaluating
challenges,
minireview
aims
provide
valuable
insights
researchers,
engineers,
policymakers
seeking
advance
implement
treatment
on
scale.
synthesis
knowledge
consolidates
current
state
field
outlines
future
prospects
overcoming
barriers
optimizing
potential
processes
environmental
remediation.
Materials,
Год журнала:
2024,
Номер
17(2), С. 296 - 296
Опубликована: Янв. 7, 2024
The
growing
worldwide
problem
of
wastewater
management
needs
sustainable
methods
for
conserving
water
supplies
while
addressing
environmental
and
economic
considerations.
With
the
depletion
freshwater
supplies,
treatment
has
become
critical.
An
effective
solution
is
needed
to
efficiently
treat
organic
contaminants
departing
from
plants
(WWTPs).
Photocatalysis
appears
be
a
viable
method
eliminating
these
recalcitrant
micropollutants.
This
study
focused
on
degradation
Reactive
Black
5
(RB5),
typical
contaminant
textile
waste,
using
photocatalytic
method.
Titanium
dioxide
(TiO2)
was
deposited
novel
luminous
fabric
illuminated
light-emitting
diode
(LED).
pollutant
degrading
efficiency
evaluated
two
different
light
sources:
(i)
UV
lamp
as
an
external
source
(ii)
cold
LED.
Interestingly,
LED
design
showed
more
promising
results
after
thorough
testing
at
various
levels.
In
fact,
we
note
50%
increase
in
mineralization
rate
when
triple
number
tissues
same
volume
reactor,
which
clear
improvement
with
compactness.
Journal of Environmental Science and Health Part A,
Год журнала:
2025,
Номер
unknown, С. 1 - 13
Опубликована: Фев. 6, 2025
This
paper
presents
the
design
and
application
of
a
portable
multi-electrode
cold
plasma
corona
discharge
system
for
pollutant
degradation
in
wastewater.
The
generated
stable
without
dielectric
barrier,
producing
active
species
such
as
hydroxyl
radicals,
hydrogen
peroxide,
nitrite,
nitrate.
experimental
results
presented
efficiency
100%,
reducing
methylene
blue
model
from
6
ppm
to
0
within
125
s
at
an
optimized
electrode
distance
0.20
cm.
optimization
minimizes
risks
associated
with
arcing
self-collision
streams
while
sustaining
continuous
discharge,
ensuring
maximum
breakdown
voltage
high
ion
density
efficient
production.
further
demonstrated
its
treating
hand
washing
target
reduce
risk
infection
during
COVID-19
pandemic.
A
comparative
analysis
highlighted
advantages
terms
rapid
treatment,
energy
efficiency,
low-cost
operation.
processed
water
met
World
Health
Organization
(WHO)
wastewater
standards
WHO
guidelines
virus
elimination,
residual
nitrogen
compounds
maintained
below
50
peroxide
levels
kept
under
5,000
ppm,
confirming
effectiveness
pathogen
reduction
purification.
