Journal of Nanotechnology,
Journal Year:
2024,
Volume and Issue:
2024, P. 1 - 15
Published: March 18, 2024
The
presence
of
emerging
contaminants
in
wastewater
like
tetracycline
poses
a
significant
challenge
water
reuse
worldwide.
implementation
p-n
heterojunction
and
dye-sensitized
techniques
the
enhancement
graphite
carbon
nitride
provides
promising
alternative
for
visible
light-driven
degradation
present
wastewater.
study
investigated
plain
composites
degrading
using
natural
sunlight
parabolic
trough
reactor.
synthesized
four
ZnFe2O4-g-C3N4
at
5,
15,
25
wt%
loading
ferrite
by
direct
annealing
melamine,
followed
thermal
ultrasonic
exfoliation
bulk
situ
precipitation
with
zinc
ferrites
to
yield
composite
photocatalyst.
photocatalysts
were
characterized
X-ray
diffraction
(XRD)
analyses
which
confirmed
that
all
spinel
phases
ZnFe2O4
well
bonded
g-C3N4
nanosheets
form
composite.
crystallite
sizes
calculated
Debye–Scherrer
equation
indicating
crystal
between
4.63
8.61
nm
confirming
nanostructures.
scanning
electron
microscope-energy
dispersive
spectroscopy
(SEM-EDX)
tests
verified
spherical
globules
attached
mesoporous
layers
absence
contaminant
phases.
UV-Vis
analysis
25%
ZF-GCN
revealed
band
gap
reduction
from
2.67
eV
2.03
eV.
PL
intensity
decreased
excitation
266
550
was
evidence
suppressed
charge
recombination.
A
resulted
best
photocatalytic
performance
93.64%
total
organic
(TOC)
removal
51.89%.
sensitization
Eosin
Y
further
improved
its
94.62%
TOC
68.29%.
Therefore,
dye
is
an
efficient
way
improving
activity
multicomponent
photocatalyst
pollutants.
Journal of Science Advanced Materials and Devices,
Journal Year:
2024,
Volume and Issue:
9(1), P. 100673 - 100673
Published: Jan. 18, 2024
A
high-speed
dispersion
homogenization-assisted
alkali
fusion-hydrothermal
method
was
successfully
developed
for
the
preparation
of
NaA
zeolite
molecular
sieve
with
excellent
adsorption
performance
ammonia
nitrogen
using
solid
waste
fly
ash.
The
sieve,
prepared
at
a
calcination
temperature
700
°C
and
crystallization
80
°C,
identified
as
through
XRD
SEM
tests,
exhibiting
uniform
ordered
cubic
crystal
structure.
result
BET
analysis
indicates
that
has
specific
surface
area
288.219
m2/g
plentiful
pore
And
effect
pH,
time,
initial
concentration
on
capacity
also
investigated.
fitting
experimental
data
kinetics
isotherm
models
kinetic
solution
by
follows
second-order
model
more
closely.
Langmuir
shows
better
correlation
than
Freundlich
model,
suggesting
is
mainly
based
surface-uniform
monolayer
physical
process.
Under
conditions
pH
=
7
an
100
mg/L,
within
60
min
can
reach
27.5
mg/g,
showing
performance.
This
study
establishes
vital
research
foundation
utilization
ash
treatment
wastewater,
great
ecological
social
benefits.
Catalysts,
Journal Year:
2023,
Volume and Issue:
13(6), P. 1023 - 1023
Published: June 20, 2023
Photocatalysis
is
an
advanced
oxidation
process
that
environmentally
friendly
option
and
one
of
the
most
critical
technologies
in
green
chemistry
today.
This
work
studied
upscaling
photocatalysis
as
a
suitable
for
wastewater
treatment
to
remove
emerging
pollutants.
For
this
purpose,
unsupported
supported
TiO2
photocatalysts
were
tested
photodegradation
ciprofloxacin
model
molecule
component,
using
visible,
UV
radiation,
solar
light.
The
suitability
photocatalyst
decompose
was
confirmed
batch
photoreactor
under
Visible
with
degradation
rates
up
90%
after
30
min
irradiation
low
adsorption
values.
coated
glass
support
material
at
packed
bed
showed
good
photoactivity
emergent
contaminants
(95%)
radiation.
It
has
been
possible
verify
photocatalytic
reactor
system
constitutes
viable
eliminating
through
sustainable
treatments.
Our
results
corroborate
possibility
degrading
by
radiation
photoreactor,
providing
more
effective
from
practical
economical
point
view
effluent
ACS ES&T Engineering,
Journal Year:
2024,
Volume and Issue:
4(5), P. 1092 - 1101
Published: Feb. 23, 2024
Advanced
oxidation
processes
(AOPs)
for
removing
ammonia
nitrogen
(NH4+-N)
are
of
increasing
interest
in
wastewater
treatment.
In
this
paper,
the
UV-activated
persulfate
(PS)
process
with
CaO
was
applied
to
oxidize
NH4+-N
gas
(N2).
Nearly
all
(30
mg
N/L)
could
be
removed
within
15
min,
and
N2
selectivity
achieved
at
95.0%.
The
addition
made
exist
form
NH3,
HO•
critical
reactive
species
oxidation.
NO,
N2H4,
NO2–
were
identified
as
intermediates
further
removed.
reaction
between
N2H4
assistance
UV/CaO
promoted
generation
during
increased
dosages
(0.2
4.0
g/L)
PS
(0.6
2.4
enhance
oxidation,
while
presence
CO32–
(100
mM)
significantly
retarded
removal
NH4+-N.
As
high
(100%)
(>79.5%)
lake
water
secondary
wastewater,
proposed
UV/PS/CaO
potentially
practical
