The Global Environmental Engineers,
Год журнала:
2024,
Номер
11, С. 37 - 53
Опубликована: Дек. 15, 2024
With
the
advancement
of
industrialization,
water
pollution
has
become
a
pressing
global
environmental
issue.
Traditional
treatment
technologies
are
struggling
to
remove
emerging
contaminants
and
meet
current
discharge
standards,
against
this
backdrop,
micro-nano
bubbles
(MNBs)
technology
attracted
considerable
research
attention
due
its
unique
physicochemical
properties,
such
as
long-term
stability,
high
internal
pressure,
photoelectric
characteristics,
reactive
oxygen
species
(ROS)
generation
capabilities,
especially
in
combination
with
advanced
oxidation
processes
(AOPs).
A
comprehensive
understanding
MNBs
utilization
is
significant
for
developing
green,
economical,
highly
effective
wastewater
technologies.
Herein,
on
basis
literature
survey,
review
article
systematically
studied
distinctive
characteristics
MNBs,
along
methodologies
employed
their
generation.
It
concurrently
explores
characterization
methods
used
assess
properties
which
instrumental
subsequent
analyses
how
these
can
enhance
catalytic
performance
AOPs.
Finally,
potential
applications
sector
points
out
direction
future
research,
including
development
more
efficient
cost-effective
technologies,
in-depth
exploration
mechanisms
AOPs,
impact
assessments.
This
aims
provide
readers
an
intrinsic
correlation
between
thereby
enabling
optimal
remediation.
Ozone Science and Engineering,
Год журнала:
2025,
Номер
unknown, С. 1 - 14
Опубликована: Янв. 6, 2025
This
report
examines
the
role
of
ozone
gas
microbubbles
in
decoloration
a
mixed
dye
stream
(1:1
v/v
methylene
blue
and
rhodamine
B).
The
use
reduces
time
by
approximately
2.5
times
compared
to
traditional
macrobubbles.
Ozone
are
generated
using
high-speed
homogenizer.
Laboratory-scale
experiments
conducted
investigate
effects
initial
concentration,
dosage,
impeller
speed
on
time.
A
linear
increase
is
observed
with
increasing
while
concentration
(16–32
g/Nm3)
shows
no
significant
effect.
Increasing
up
12,000
RPM
time,
but
beyond
this
point,
further
reduction
observed.
Kinetics
reported
for
both
constituent
dyes.
Second-order
rate
constants
0.0164
0.079
L/mg·s
found
fit
experimental
data
B
blue,
respectively.
The
influence
of
temperature
on
the
physicochemical
properties
air
nanobubbles
(A-NBs)
in
a
complex
salt
solution
is
crucial
for
their
application
corrosion
inhibition
within
circulating
cooling
systems.
variation
patterns
properties,
A-NBs
stainless
steel
and
underlying
mechanisms
range
system
were
investigated.
Results
indicated
that
increasing
led
to
decrease
number
concentration
A-NBs,
average
particle
size,
absolute
value
zeta
potential
gradually.
Weight
loss
measurements,
electrochemical
analyses,
morphological
characterizations
specimens
demonstrated
exhibited
effective
inhibition,
particularly
at
concentrations
order
107
particles/mL
≤50
°C.
Electrical
conductivity,
impedance,
surface
revealed
elevated
temperatures
detrimental
stability
bubble
layer.
binding
effect
corrosive
ions,
as
well
protective
roles
passive
film,
calcium
carbonate
scale,
layer
surface,
weakened,
leading
an
accelerated
rate.
This
study
provides
insights
into
industrial
environmentally
friendly
technology.
