Environmental Technology & Innovation,
Journal Year:
2024,
Volume and Issue:
35, P. 103724 - 103724
Published: June 26, 2024
In
recent
years,
the
persistence
of
pharmaceutical
contaminants
like
metronidazole
(MNZ)
and
penicillin
G
(PG)
in
water
bodies
has
become
a
major
environmental
concern.
The
present
research
studied
simultaneous
degradation
MNZ
PG
utilizing
an
AgZnFe2O4@Ch
catalyst
generated
through
co-precipitation
technique
as
effective
stimulator
for
persulfate
(PS)
existence
UV
light.
structure
was
characterized
using
X-ray
powder
diffraction,
Fourier
transform
infrared
spectroscopy,
Field
emission
scanning
electron
microscopy,
vibrating-sample
magnetometer,
energy
dispersive
spectroscopy
mapping.
After
50
minutes
reaction
time
under
ideal
operating
conditions,
which
included
0.4
g/L
catalyst,
4
mM
PS,
5
mg/L
PG,
pH
5,
highest
81.5
%
82.3
were
obtained.
Statistical
parameters,
including
R2
values
0.985
0.981
indicate
very
good
agreement
between
predicted
observed
values.
Garson's
method
analysis
revealed
that
PS
dosage
had
greatest
impact
on
degradation,
while
initial
concentration
exerted
most
significant
influence
degradation.
Langmuir-Hinshelwood
model
surface
rate
constants
(Kc)
0.954
(mg/L.min)
adsorption
equilibrium
(KL-H)
0.032
(L/mg)
both
antibiotics,
respectively.
claimed
mechanism
illustrated
by
free
radical
scavenging
studies,
demonstrated
SO•4-
radicals
main
involved
PG.
A
last
investigation
catalyst's
regeneration
it
satisfactory
chemical
stability
after
five
cycles
usage
approaches.
