Separations,
Journal Year:
2023,
Volume and Issue:
10(11), P. 568 - 568
Published: Nov. 14, 2023
In
this
study,
Iron–Carbon
Micro-Electrolysis
(ICME),
Fenton
oxidation,
and
their
combination
were
investigated
to
treat
the
leachate
obtained
from
a
wastewater
treatment
plant
located
in
southern
China.
The
results
show
that
Fenton-ICME
process
was
most
efficient
one.
After
treated
with
process,
COD
concentration
reduced
initial
35,772
mg/L
13,522
mg/L,
removal
efficiency
up
62.2%.
addition,
biological
oxygen
demand
(BOD)
ratio
increased
by
40%
at
optimal
conditions.
This
suggests
biodegradability
of
has
been
increased,
facilitating
biodegradation
after
it
is
mixed
raw
wastewater.
By
studying
characteristic
variation
found
combined
mainly
removes
organic
compounds
such
as
aromatic
compounds,
ketones,
aldehydes.
separated
sludge
does
not
have
crystalline
structure,
iron
exists
form
trivalent
iron.
It
reveals
great
potential
be
used
pretreatment
leachate.
Emergent Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 10, 2024
Abstract
Landfill
leachate
generation
due
to
unscientific
solid
waste
management
seriously
threatens
soil,
groundwater,
and
surface
water.
The
biological
treatment
system
alone
is
insufficient
remediate
this
dark-colored
liquid
requires
appropriate
physicochemical
methods
as
pre-treatment.
This
study
evaluates
the
efficiency
of
coagulation,
adsorption,
a
combination
both
remove
color
chemical
oxygen
demand
(COD).
Two
common
chemicals,
alum
ferric
chloride,
were
conventionally
used
coagulants
multi-walled
carbon
nanotubes
(MWCNTs)
adsorbents
their
high
surface-to-volume
ratio.
parameters,
such
pH
dosage,
optimized
using
coagulation
process.
effect
contact
time
temperature
was
evaluated
for
adsorption
MWCNTs.
In
process,
about
66.67%
COD
95.77%
removal
observed
alum,
whereas
77.78%
99.65%
chloride.
Adsorption
MWCNTs
resulted
in
65.66%
97.38%
removal.
Combined
followed
by
88.89%
100%
Overall,
found
be
effective
at
removing
from
stabilized
landfill
leachate.
Graphical
abstract
Molecules,
Journal Year:
2024,
Volume and Issue:
29(13), P. 3240 - 3240
Published: July 8, 2024
Organic
pollutants
were
one
of
the
main
sources
environmental
pollutants.
The
degradation
organic
through
photocatalytic
technology
was
effective
solutions.
By
preparing
zinc
oxide(ZnO)
nanowires
modified
with
sodium-doped
conjugated
2,4,6-triaminopyrimidin-g-C3N4
(NaTCN)
heterojunction
(ZnO/NaTCN),
performance
NaTCN
different
ratios
ZnO
systematically
studied.
studied
methyl
blue
(MB)
dye.
results
showed
that
22.5
wt%
ZnO/NaTCN
had
best
effect
on
MB
rate
reached
98.54%
in
70
min.
After
three
cycles,
it
shows
good
cycling
stability
(degradation
is
96.99%)
for
dye
degradation.
It
found
there
are
two
types
active
species:
·OH
and
h+,
which
h+
species
produced
by
dyes.
excellent
attributed
to
fact
facilitated
extraction
transport
photogenerated
carriers.
doping
sodium
charge
transfer.
system
promoted
transfer
provided
guidance
designing
efficient
composite
catalysts
use
other
renewable
energy
fields.
