Separations,
Journal Year:
2024,
Volume and Issue:
11(12), P. 353 - 353
Published: Dec. 18, 2024
Electro-chlorination
(E-Cl)
is
an
emerging
and
promising
electrochemical
advanced
oxidation
technology
for
wastewater
treatment
with
the
advantages
of
high
efficiency,
deep
mineralization,
a
green
process,
easy
operation.
It
was
found
that
mechanism
pollutant
removal
by
electro-chlorination
mainly
involves
indirect
in
which
driven
intermediate
active
species,
especially
RCS
chlorine
radicals,
strong
oxidization
ability
produced
at
anodes.
In
this
work,
we
summarized
principles
pathways
removal/degradation
pollutants
(organic
ammonia
nitrogen)
E-Cl
major
affecting
factors
including
applied
current
density,
voltage,
electrolyte
concentration,
initial
pH
value,
etc.
system,
DSA
BDD
electrodes
were
most
widely
used
electrode
materials.
The
flow-through
reactor
considered
to
be
since
it
had
porosity
large
pore
size,
could
effectively
improve
mass
transfer
efficiency
electron
reaction.
Of
many
detection
methods
radicals
RCS,
paramagnetic
resonance
(EPR)
spectrophotometry
N,
N-diethyl-1,4-phenylenediamine
sulfate
(DPD)
as
chromogenic
agent
two
methods.
Overall,
process
excellent
performance
prospects
treating
salt-containing
wastewater.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 28, 2025
Discharge
of
wastewater
containing
nitrate
(NO3−)
disrupts
aquatic
ecosystems
even
at
low
concentrations.
However,
selective
and
rapid
reduction
NO3−
concentration
to
dinitrogen
(N2)
is
technically
challenging.
Here,
we
present
an
electrified
membrane
(EM)
loaded
with
Sn
pair-atom
catalysts
for
highly
efficient
N2
in
a
single-pass
electrofiltration.
The
design
facilitates
coupling
adsorbed
N
intermediates
on
adjacent
atoms
enhance
selectivity,
which
challenging
conventional
fully-isolated
single-atom
catalyst
design.
EM
ensures
sufficient
exposure
the
intensifies
interaction
through
mass
transfer
enhancement
provide
more
coupling.
We
further
develop
reduced
titanium
dioxide
as
anode
generate
free
chlorines
fully
oxidizing
residual
ammonia
(<1
mg-N
L−1)
N2.
sequential
cathode-to-anode
electrofiltration
realizes
near-complete
removal
10
L−1
~100%
selectivity
water
resident
time
order
seconds.
Our
findings
advance
practical
solution
contamination
authors
report
that
mg-N/L
during
electro-filtration.
