Environmental Science and Ecotechnology,
Journal Year:
2022,
Volume and Issue:
13, P. 100212 - 100212
Published: Nov. 9, 2022
Antibiotics,
the
most
frequently
prescribed
drugs,
have
been
widely
applied
to
prevent
or
cure
human
and
veterinary
diseases
undoubtedly
led
massive
releases
into
sewer
networks
wastewater
treatment
systems,
a
hotspot
where
occurrence
transformation
of
antibiotic
resistance
take
place.
Extracellular
polymeric
substances
(EPS),
biopolymers
secreted
via
microbial
activity,
play
an
important
role
in
cell
adhesion,
nutrient
retention,
toxicity
resistance.
However,
potential
roles
sludge
EPS
related
removal
antibiotics
are
still
unclear.
This
work
summarizes
composition
physicochemical
characteristics
state-of-the-art
EPS,
highlights
critical
removal,
evaluates
their
defense
performances
under
different
exposures,
analyzes
typical
factors
that
could
affect
sorption
biotransformation
behavior
antibiotics.
Next,
interactions
between
genes
analyzed.
Future
perspectives,
especially
engineering
application
for
detection
defense,
also
emphatically
stressed.
Ecotoxicology and Environmental Safety,
Journal Year:
2023,
Volume and Issue:
251, P. 114524 - 114524
Published: Jan. 10, 2023
MIL-101(Fe)-based
catalysts
have
been
widely
used
for
degradation
of
organic
pollutants
based
on
peroxymonosulfate
(PMS)
activation.
Hence,
a
facile
calcination
and
hydrothermal
method
was
in
this
study
to
prepare
MIL-101(Fe)/g-C3N4
composite
catalyst
with
high
activity
stability
PMS
activation
degrade
tetracycline
hydrochloride
(TC)
under
visible-light
irradiation.
We
clearly
elucidated
the
mechanism
involved
photo
Fenton-catalyzed
process
by
separating
pollutant
oxidation
processes.
The
synergetic
effects
MIL-101(Fe)
g-C3N4
acting
as
an
electron
shuttle
mediating
transfer
from
substrate
PMS,
accompanied
redox
cycling
surface
Fe(II)/Fe(III).
Multiple
experimental
results
indicated
that
bound
during
visible
irradiation
generation
sulfate
radicals
(SO4•-),
hydroxyl
(•OH)
superoxide
anion
free
(•O2-)
radical
pathway
singlet
oxygen
(1O2)
holes
(h+)
nonradical
pathway.
major
pathways
TC
can
be
described
demethylation,
deamination,
deamidation
carbonylation.
This
work
provides
valuable
information
advances
fundamental
understanding
needed
design
syntheses
metal-free
conjugated
polymers
modified
metal-organic
frameworks
heterogeneous
photo-Fenton
reactions.
