Sustainability,
Journal Year:
2024,
Volume and Issue:
16(23), P. 10761 - 10761
Published: Dec. 8, 2024
The
presence
of
pharmaceuticals
in
aquatic
ecosystems
is
an
issue
increasing
concern.
Regardless
the
low
concentration
water,
they
can
have
a
toxic
effect
on
both
humans
and
organisms.
Advanced
oxidation
processes
(AOPs)
been
described
as
promising
technique
for
eliminating
due
to
their
high
efficiency.
However,
cost
associated
with
application
these
reagents
energy
requirements
affected
implementation
AOPs
at
large
scales.
Biochar
has
suggested
be
used
catalyst
overcome
limitations.
considered
alternative
heterogeneous
thanks
its
physicochemical
characteristics
like
specific
surface
area,
porous
structure,
oxygen-containing
functional
groups,
electrical
conductivity,
persistent
free
radicals
(PFRs),
modifiable
properties,
structure
defects.
This
carbonaceous
material
presents
capacity
activate
oxidizing
agents
leading
formation
radical
species,
which
are
needed
degrade
pharmaceuticals.
Additionally,
AOP/biochar
systems
destroy
pharmaceutical
molecules
following
non-radical
pathway.
To
enhance
biochar
catalytic
performance,
modifications
such
iron
(Fe)
impregnation,
heteroatom
doping,
supporting
semiconductors
surface.
Although
efficiently
combination
several
mineralization
from
further
research
must
conducted
evaluate
different
regeneration
techniques
increase
biochar’s
sustainable
applicability
reduce
operational
combined
process.
Moreover,
conditions
influencing
system
required
evaluated
discern
find
that
maximize
degradation
by
systems.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(4), P. 267 - 267
Published: April 17, 2024
The
use
of
hydrogen
peroxide
(produced
in
situ
or
ex
situ)
as
the
main
agent
oxidative
processes
environmental
pollutant
removal
is
widely
studied.
degradation
water
pollutants,
such
dyes,
pharmaceuticals,
cosmetics,
petroleum
derivatives,
and
even
pathogens,
has
been
successfully
obtained
by
different
techniques.
This
review
gives
an
overview
more
recent
methods
developed
to
apply
mediated
H2O2
other
reactive
oxygen
species
(ROS)
catalysis,
with
particular
attention
strategies
(Fenton-like
Bio-Fenton,
photo-
electro-catalysis)
materials
employed.
A
wide
discussion
about
characteristics
specifically
studied
for
activation,
well
their
chemical
composition
morphology,
was
carried
out.
Moreover,
interesting
generation
enzymes
were
also
presented
efficiency
applicability
compared
Fenton
electro-Fenton
discussed
above.
Bio-Fenton
bi-enzymatic
ROS
seems
be
attractive
scalable,
although
not
yet
applied
full-scale
plants.
critical
feasibility,
criticalities,
perspectives
all
considered
completes
this
review.
ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
4(9), P. 4129 - 4139
Published: Aug. 1, 2024
The
contamination
of
natural
water
bodies
with
dyes
and
other
refractory
compounds
is
a
menacing
issue
in
developing
nations.
Despite
stringent
laws,
industrial
effluent
not
managed
efficiently,
as
it
incurs
additional
cost.
Hence,
the
present
research
focuses
on
sustainable
mitigation
contaminants
using
self-driven
bioelectro-Fenton
(BEF)
system.
iron-activated
charcoal
(Gt-Fe/AC)
cathode-cum-Fenton
catalyst
used
this
investigation
was
synthesized
waste
green
tea
extract
biogenic
agent.
catalyst-driven
BEF
system
(Gt-Fe/AC-MFC)
achieved
maximum
power
density
111.7
±
3.1
mW/m2
operating
voltage
108
3
mV,
while
parallelly
degrading
20
mg/L
Coomassie
Brilliant
Blue
(CBB)
dye
almost
entirely
300
min
at
neutral
pH.
Additionally,
high
removal
Congo
red
(96.8
1.2%)
methylparaben
(90.9
0.6%)
attained
under
similar
conditions.
Moreover,
Fe-AC-catalyzed
performed
fairly
well
treating
spiked
real
wastewater
exhibited
remarkable
stability,
only
3%
decrease
CBB
efficiency
after
10
continuous
cycles
0.11%
drop
cathodic
current
per
cycle.
can
be
oxidative
technology
to
tackle
resource-constricted
regions.
Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(3), P. 1418 - 1418
Published: Jan. 30, 2025
Contaminants
of
emerging
concern
(CECs)
in
water,
including
pharmaceuticals
and
personal
care
products,
represent
a
significant
threat
to
environmental
human
health.
In
this
context,
the
electro-Fenton
(EF)
process
has
emerged
as
highly
effective
technique
for
removal
such
pollutants.
This
study
investigates
innovative
use
tea
waste
material
(TWM)
combination
with
copper-iron
nanoparticles
(FeCuNPs)
degrade
mixture
CECs.
A
central
aspect
research
is
sustainable
reuse
organic
material,
TWM,
support
catalytic
nanoparticles.
approach
not
only
utilizes
resource
that
would
otherwise
be
discarded
but
also
promotes
sustainability
treatment
contaminated
aligning
principles
circular
economy.
The
as-prepared
FeCuNPs@TWM
catalyst
was
fully
characterized,
critical
parameters
influencing
pollutant
were
assessed,
adsorption
capacity,
load,
applied
current.
Under
optimized
conditions,
EF
process,
enhanced
by
FeCuNPs@TWM,
achieved
complete
degradation
contaminants
within
15
min
electrochemical
activity
remained
after
five
cycles.
Results
demonstrate
using
functionalized
FeCu
improves
efficiency
offers
an
eco-friendly
cost-effective
alternative.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(13), P. e33789 - e33789
Published: June 27, 2024
This
study
aims
to
enhance
the
stability
and
effectiveness
of
heterogeneous
catalysts
in
Fenton-like
reactions,
explicitly
addressing
acidity
limitations
inherent
traditional
Fenton
processes.
Copper-iron
was
synthesized
through
co-precipitation,
a
catalyst
bead
produced
from
hydrogel
formation.
X-ray
diffraction
(XRD)
photoelectron
spectroscopy
(XPS)
confirm
phases
bimetallic
Copper-iron,
aligning
with
intended
composition.
Modification
alginate
led
reduced
metal
leaching
compared
bare
counterpart,
as
confirmed
by
atomic
absorption
(AAS).
Additionally,
Fourier-transform
infrared
(FTIR)
revealed
deactivation
disappearance
carboxyl
groups,
indicating
depolymerization
bead.
Under
suggested
conditions
(Methyl
Orange
concentration
25
mg/L,
initial
solution
pH
7,
2
g/L
loading,
hydrogen
peroxide
100
mM
120-min
reaction
time),
demonstrated
remarkable
decolorization
efficiency
Methyl
Orange,
achieving
97.67
%.
Further
highlighting
its
practicality,
exhibited
outstanding
reusability
over
four
cycles
under
identical
conditions,
showcasing
robust
immobilization
capabilities
sustained
performance.
Notably,
catalyst's
magnetic
properties
facilitated
easy
separation
using
an
external
magnet.
In
conclusion,
developed
beads
offer
high
reusability,
separability,
iron
leaching.
The
advantageous
characteristics
underscore
potential
for
wastewater
treatment
applications,
warranting
further
exploration
practical
conditions.
