The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
954, P. 174939 - 174939
Published: July 24, 2024
Wastewater
treatment
plant
(WWTP)
discharges
can
be
a
source
of
organic
contaminants,
including
pesticides,
to
rivers.
An
integrated
model
was
developed
for
the
Potomac
River
watershed
(PRW)
determine
amount
accumulated
wastewater
percentage
streamflow
(ACCWW)
and
calculate
predicted
environmental
concentrations
(PECs)
14
pesticides
in
non-tidal
National
Hydrography
Dataset
Plus
Version
2.1
stream
segments.
Predicted
were
compared
measured
(MECs)
from
32
sites
that
represented
range
ACCWW
land
use
evaluate
performance
assess
possible
non-WWTP
loading
sources.
Statistical
agreement
between
PECs
MECs
strongest
insecticides,
followed
by
fungicides
herbicides.
Principal
component
analysis
utilizing
optical
fluorescence
ancillary
water
quality
data
identified
urban
runoff
Pesticides
indicated
relatively
larger
sources
WWTPs
included
dinotefuran,
fipronil,
carbendazim,
thiabendazole,
prometon
whereas
imidacloprid,
azoxystrobin,
propiconazole,
tebuconazole,
diuron
more
related
runoff.
In
addition,
generally
comprised
low
proportion
MECs,
which
indicates
dominant
beyond
WWTP
discharges.
Cumulative
potential
toxicity
higher
with
greater
and/or
located
areas.
Imidacloprid,
carbendazim
accounted
largest
portion
across
sites.
The
chronic
aquatic
life
benchmarks
freshwater
invertebrates
exceeded
82
%
imidacloprid
detections
(n
=
28)
47
fipronil
19).
These
results
highlight
ecological
implications
pesticide
contamination
also
legacy
effects
soil
groundwater
Pesticide
management
strategies
mitigate
both
current
historical
impacts
may
improve
health
ecosystems.
Environment International,
Journal Year:
2025,
Volume and Issue:
195, P. 109226 - 109226
Published: Jan. 1, 2025
Water
reuse
is
a
viable
option
to
address
temporal
or
structural
water
shortages.
However,
the
ubiquitous
presence
of
chemicals
emerging
concern
(CECs)
in
natural
systems,
especially
aquatic
environment,
represents
significant
obstacle
and
receiving
environment.
Therefore,
an
extensive
literature
review
was
performed
identify
current
practices
at
field
scale,
reported
types
levels
CECs
their
associated
risks
for
human
environmental
health.
Treated
wastewater
primary
reused
source,
with
agricultural
being
most
frequently
application
(28
%),
followed
by
indirect-potable
(16
%).
Contrary
potable
reuse,
it
observed
that
almost
no
studies
applied
additional
treatment
before
purposes.
Based
on
calculated
risk
quotients,
ecological
were
identified
perfluorooctanesulfonic
acid,
chlorpyrifos,
triclocarban,
ethinylestradiol,
health
acid
perfluorooctanoic
acid.
Environmental
could
be
assessed
77
%
detected
CECs,
while
assessment
limited
28
%.
For
CEC
concentrations
produced
crops
acceptable
levels.
thorough
during
currently
due
focus
defined
class
contaminants
literature,
i.e.,
pharmaceuticals,
falls
short
per-
polyfluoroalkyl
substances.
future
should
include
broader
set
study
mitigation
options
decrease
reuse.
Moreover,
harm
caused
such
as
adverse
effects
microbial
soil
community
leaching
non-target
sources
has
hardly
been
studied
presents
knowledge
gap.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
58(1), P. 704 - 716
Published: Dec. 18, 2023
With
increasing
water
scarcity,
many
utilities
are
considering
the
potable
reuse
of
wastewater
as
a
source
drinking
water.
However,
not
all
chemicals
removed
in
conventional
treatment,
and
disinfection
byproducts
(DBPs)
can
form
from
these
contaminants
when
disinfectants
applied
during
or
after
especially
if
upstream
advanced
treatment
processes
to
control
biofouling.
We
investigated
chlorination
seven
priority
emerging
(17β-estradiol,
estrone,
17α-ethinylestradiol,
bisphenol
A
(BPA),
diclofenac,
p-nonylphenol,
triclosan)
ultrapure
water,
we
also
impact
on
real
samples
different
stages
an
plant
evaluate
role
associated
cytotoxicity
estrogenicity.
Many
DBPs
were
tentatively
identified
via
liquid
chromatography
(LC)-
gas
(GC)-high
resolution
mass
spectrometry,
including
28
previously
reported.
These
encompassed
chlorinated,
brominated,
oxidized
analogs
parent
compounds
well
smaller
halogenated
molecules.
Chlorinated
BPA
was
least
cytotoxic
formed
but
highly
estrogenic,
whereas
chlorinated
hormones
cytotoxic.
Estrogenicity
decreased
by
∼4–6
orders
magnitude
for
17β-estradiol
estrone
following
increased
2
diclofenac.
p-nonylphenol
∼50%
natural/synthetic
hormones.
Potential
seasonal
differences
estrogen
activity
unreacted
vs
reacted
field
observed.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 7, 2024
Sulfur
polymers
produced
through
'inverse
vulcanization'
exhibit
various
attributes,
such
as
photocatalytic
activity
and
a
high
capacity
to
adsorb
heavy
metals.
Nevertheless,
there
is
lack
of
research
investigating
the
use
sulfur
materials
for
removal
organic
contaminants.
In
this
work,
porous
(PSPs)
were
synthesized
from
elemental
1,3-diisopropenylbenzene,
with
porosity
introduced
via
salt
templating.
The
result
material
that
can
strongly
chemically
neutralize
model
contaminant
(caffeine).
PSPs
show
adsorption
up
5
times
higher
than
leading
(activated
carbon).
Furthermore,
either
or
degradation
processes
govern
efficiency
depending
on
synthesis
parameters
PSPs.
This
first-ever
report
demonstrating
effective
removing
emerging
contaminants
water.
versatile
offers
variation,
which
means
much
more
explore
in
exciting
area.
