Catalysts,
Год журнала:
2023,
Номер
13(2), С. 233 - 233
Опубликована: Янв. 19, 2023
Pyrolysis
of
lemon
stalks
at
850
°C
under
a
limited
oxygen
atmosphere
yields
highly
active
and
selective
biochar
for
the
activation
persulfate
ion
oxidation
sulfamethoxazole
(SMX).
The
mainly
consists
C
O
atoms,
with
Ca
K
being
most
abundant
minerals.
It
has
moderate
specific
surface
area
154
m2
g−1
carbonate
species,
probably
in
form
calcium
carbonate.
Complete
degradation
0.5
mg
L−1
SMX
can
be
achieved
within
20
min
using
500
sodium
(SPS)
100
ultrapure
water
(UPW).
acidic
environment
positively
influences
adsorption
processes,
while
complexity
matrices
usually
negative
impact
on
degradation.
presence
chloride
accelerates
SMX,
whose
mechanism
follows
radical
non-radical
pathways.
Hydroxyl
radicals
seem
to
have
dominant
contribution,
electron
transfer
pathway
was
proven
electrochemical
characterization.
is
stable
least
five
cycles,
this
makes
it
good
candidate
sustainable,
metal-free
catalyst.
Applied Catalysis B Environment and Energy,
Год журнала:
2023,
Номер
342, С. 123457 - 123457
Опубликована: Ноя. 1, 2023
In
this
study,
we
developed
a
Cu0.5Fe2.5S4
nanocatalyst
through
facile
sulfidation
of
the
Cu-MIL-88B(Fe)
precursor
to
expedite
surface
Fe(III)
reduction
and
enhance
H2O2
activation
in
heterogeneous
electro-Fenton
(HEF).
The
as-prepared
catalyst
possesses
relatively
large
specific
area
uniformly
dispersed
metal
active
sites.
catalyzed
HEF
system
allowed
compete
removal
naproxen
with
minimal
leaching,
surpassing
that
or
Fe3S4.
Quantitative
XPS
analysis,
electrochemical
characterization
density
functional
theory
calculations
elucidate
an
electron
donor-shuttle
regime
S2-
Cu
species
serve
as
donor
shuttle,
respectively.
significantly
accelerate
internal
transfer
between
S
Fe
mitigate
dissolution
adjacent
iron
sites,
securing
sustainable
reducing
capacity.
Moreover,
Cu0.5Fe2.5S4-based
exhibits
great
practicability
for
treatment
various
organics
urban
wastewater.
This
study
opens
new
avenue
addressing
challenge
sluggish
Fe(III)/Fe(II)
cycling
HEF.
Water,
Год журнала:
2022,
Номер
14(15), С. 2385 - 2385
Опубликована: Авг. 1, 2022
Acid
mine
drainage
(AMD)
is
a
typical
type
of
pollution
originating
from
complex
oxidation
interactions
that
occur
under
ambient
conditions
in
abandoned
and
active
mines.
AMD
has
high
acidity
contains
concentration
heavy
metals
metalloids,
posing
serious
threat
to
ecological
systems
human
health.
Over
the
years,
great
progress
been
made
prevention
treatment
AMD.
Remediation
approaches
like
chemical
neutralization
precipitation,
ion
exchange,
membrane
separation
processes,
bioremediation
have
extensively
reported.
Nevertheless,
some
limitations,
such
as
low
efficacy,
excessive
consumption
reagents,
secondary
contamination
restrict
application
these
technologies.
The
aim
this
review
was
provide
updated
information
on
sustainable
treatments
engaged
published
literature
resource
utilization
recovery
reuse
valuable
resources
(e.g.,
clean
water,
sulfuric
acid,
metal
ions)
can
offset
cost
remediation.
Iron
oxide
particles
recovered
be
applied
adsorbents
for
removal
pollutants
wastewater
fabrication
effective
catalysts
heterogeneous
Fenton
reactions.
beneficiation
fields,
activating
pyrite
chalcopyrite
flotation,
regulating
pulp
pH,
leaching
copper-bearing
waste
rock,
provides
easy
access
innovative
A
will
help
researchers
understand
research,
identify
strengths
weaknesses
each
technology,
which
shape
direction
future
research
area.
