Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 26, 2024
In
this
study,
MnFe2O4
microspheres
were
synthesized
to
activate
potassium
persulfate
complex
salt
(Oxone)
for
the
degradation
of
17β-estradiol
(17β-E2)
in
aqueous
solutions.
The
characteristic
was
detected
by
XRD,
XPS
and
SEM-EDS.
experimental
results
indicated
that
17β-E2
followed
pseudo-first-order
kinetics.
At
25
°C,
concentration
0.5
mg/L,
dosage
100
Oxone
mmol/L,
initial
pH
value
6.5,
decomposition
efficiency
reached
82.9%
after
30
min
reaction.
Additionally,
free
radical
quenching
experiments
electron
paramagnetic
resonance
analysis
demonstrated
SO4−•
•OH
participated
reaction
process
whole
system,
with
being
main
reactive
oxygen
species
(ROS).
activation
mechanism
MnFe2O4/Oxone/17β-E2
system
is
proposed
as
follows:
initially
reacts
O2
H2O
solution
generate
active
Fe3+-OH
Mn2+-OH
species.
Subsequently,
react
a
heterogeneous
phase
process,
producing
highly
radicals.
After
four
cycles
material,
removal
rate
decreased
24.1%.
Sustainability,
Journal Year:
2025,
Volume and Issue:
17(2), P. 491 - 491
Published: Jan. 10, 2025
The
concentrations
of
estrogens
and
xenoestrogens
in
the
environment
are
rising
rapidly,
posing
significant
multifaceted
risks
to
human
health
ecosystems.
It
is
imperative
for
governments
develop
policies
that
leverage
sustainable
technologies
mitigate
presence
pharmaceutical
estrogenic
compounds
environment.
This
review
examines
global
environmental
associated
with
indigenous
synthetic
xenoestrogens,
while
critically
evaluating
approaches
their
management.
A
total
28
studies,
published
between
December
2013
18
January
2024,
sourced
from
PubMed
Scopus,
were
systematically
reviewed.
Most
these
studies
focused
on
aquatic
environments
where
they
contribute
reproductive
developmental
abnormalities
fish
may
enter
food
chain,
primarily
through
consumption.
Sustainable
methods
removing
or
neutralizing
include
adsorption,
filtration,
enzymatic
degradation.
Additionally,
such
as
activated
sludge
processes
high-rate
algal
ponds
demonstrate
promise
large-scale
applications;
however,
further
research
standardized
operational
guidelines
needed
optimize
efficiency
sustainability.
has
concluded
ECs
can
have
severe
consequences
environment,
most
notably,
impairment
functions
humans,
underscoring
urgent
need
implement
drug
take-back
programs,
establish
evidence-based
wastewater
waste
treatment,
set
enforceable
thresholds
surface
drinking
water.
Existing
regulations
UK’s
Regulation
registration,
evaluation,
authorization,
restriction
chemicals
United
States’
National
Primary
Drinking
Water
Regulations
be
modified
dangerous
aid
maintaining
safe
EC
levels”.
Such
measures
critical
reducing
safeguarding
both
public
ecological
integrity.
Langmuir,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 14, 2024
Estrone
is
an
emerging
contaminant
found
in
waters
and
soils
all
over
the
world.
Conventional
water
treatment
methods
are
not
suitable
for
estrone
removal
due
to
its
nonpolarity
low
bioavailability.
Heterogeneous
photocatalysis
a
promising
approach;
however,
pristine
semiconductors
need
optimization
efficient
photodegradation.
Herein,
we
compared
Zn–Cr
LDH/GCN
heterostructures
obtained
by
three
different
synthesis
methods.
The
influence
of
GCN
content
heterostructure
on
photoactivity
was
also
tested.
morphology,
structure,
electronic
properties
materials
were
analyzed
compared.
photocatalytic
kinetic
tests
conducted
with
1
ppm
both
UV
visible
light,
separately.
HLDH-G50
material,
hydrothermal
route
containing
50
wt
%
exhibited
highest
efficiency.
After
h,
99.5%
degraded
light.
In
pollutant
concentration
below
detection
limit
after
0.5
h.
superior
effectiveness
caused
numerous
factors
such
as
high
homogeneity
formed
heterostructure,
lower
band
gap
energy
LDH,
increased
photocurrent.
These
characteristics
led
prolonged
lifetimes
charge
carriers,
wider
light
absorption
range,
uniformity
material
predictable
performance.
This
study
highlights
importance
proper
engineering
strategy
acquiring
highly
effective
photocatalysts
designed
purification.
particular,
this
work
provides
innovative
insight
into
comparing
their
materials'
properties.
Frontiers in Microbiology,
Journal Year:
2024,
Volume and Issue:
15
Published: Sept. 20, 2024
Estrogens
are
a
growing
problem
in
wastewater
discharges
because
they
continuously
entering
the
environment
and
biologically
active
at
extremely
low
concentrations.
Their
effects
on
wildlife
were
first
identified
several
decades
before,
but
environmental
limits
remedial
measures
still
not
completely
elucidated.
Most
conventional
treatment
processes
designed
with
sufficiently
long
retention
times
to
effectively
remove
estrogens.
Nature-based
technologies
such
as
wetlands
(TW)
high-rate
algal
ponds
(HRAP)
economically
feasible
alternatives
for
decentralized
have
promise
removing
steroid
hormones
including
For
small
communities
populations
below
50,000,
overall
cost
of
TWs
HRAPs
is
considerably
lower
than
that
advanced
activated
sludge
systems
(AS)
sequencing
batch
reactors
(SBR).
This
results
from
simplicity
design,
use
less
materials
construction,
energy
use,
operation
maintenance
costs,
by
non-skilled
personnel.
The
nature-based
show
high
removal
(>80%)
both
natural
synthetic
Estrogen
can
be
enhanced
using
alternative
media
palm
mulch,
biochar,
construction
wastes
bricks,
instead
traditional
substrates
sand
gravel.
While
effective
estrogen
removal,
disadvantage
requiring
relatively
large
footprint,
this
reduced
intensified
multilayer
wetland
filters
(IMWF).
Using
filamentous
algae
HRAP
(high-rate
pond;
HRFAP)
an
emerging
technology
treatment.
supply
oxygen
via
photosynthesis
assimilate
nutrients
into
readily
harvestable
biomass.
Diurnal
fluctuations
pH
these
provide
conditions
conducive
breakdown
estrogens
wide
range
other
contaminants.
performance
varies
seasonal
changes
(particularly
temperature
solar
irradiation),
however
greater
understanding
operating
loading
rate,
hydraulic
time
(HRT),
pond/bed
depth,
dissolved
(DO)
concentration
pH,
which
influence
mechanisms
(biodegradation,
sorption
photodegradation)
enable
successfully
used
Journal of Hazardous Materials,
Journal Year:
2023,
Volume and Issue:
462, P. 132754 - 132754
Published: Oct. 11, 2023
Nutrient
recovery
from
anaerobic
digestate
through
electrodialysis
technology
(ED)
has
been
investigated
and
shown
high
promise,
but
the
removal
of
17β-estradiol
(E2),
which
is
a
natural
estrogen
widely
found
in
manure
digestate,
not
clear.
This
study
examined
mechanism
membrane
adsorption
anodic
oxidation
E2
during
recovering
nutrient
further
performance
Anode-ED
removal.
The
results
showed
that
conventional
ED
was
primarily
attributed
to
adsorption,
resulting
no
detectable
product
solution.
capacity
anion
exchange
for
significantly
higher
compared
cation
membrane.
During
operation,
efficiently
removed
by
electrochemical
oxidation,
chlorination
played
primary
role.
Moreover,
intermediates
were
after
40
min.
Even
though
carbonate,
volatile
fatty
acid
(VFA),
humic
real
wastewater
have
negative
impact
on
completely
anode-ED.
indicates
anode-ED
promising
digestate.
