Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(3), P. 1366 - 1377
Published: Jan. 12, 2023
Recently,
a
study
found
that
aromatic
DBP
fractions
dominate
the
overall
toxicity
of
chlorinated
drinking
water.
However,
key
drivers
have
not
been
reported
via
comprehensive
evaluation
based
on
formation
aliphatic
and
DBPs
in
In
this
study,
occurrence
37
19
samples
with
different
water
characteristics
collected
Chinese
megacity
was
explored.
According
to
individual
concentrations
cytotoxicity
potencies
as
well
"TIC-Tox"
method,
haloacetonitriles
halonitrophenols
were
be
among
measured
DBPs,
respectively.
when
are
taken
into
consideration
together,
calculated
present
higher
contribution
than
which
is
inconsistent
previous
study.
TOX
showed
significant
positive
correlations
most
but
no
sample
concentrates
significantly
related
total
suggesting
current
selected
insufficient
represent
DBPs.
UV
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(26), P. 11695 - 11706
Published: June 15, 2024
Aminophenyl
sulfone
compounds
(ASCs)
are
widely
used
in
various
fields,
such
as
the
pharmaceutical
and
textile
industries.
ASCs
their
primary
acetylation
products
inevitably
discharged
into
environment.
However,
high
toxicity
of
could
be
released
from
deacetylation
products.
Still,
occurrence
ecological
risks
remain
largely
unknown.
Here,
we
integrated
all
existing
based
on
core
structure,
together
with
potential
products,
to
establish
a
database
covering
1105
compounds.
By
combining
R
programming,
45
ASCs,
sulfonamides,
were
identified
influent
effluent
19
municipal
wastewater
treatment
plants
4
cities
China.
13
them
detected
for
first
time
aquatic
environment,
12
newly
identified.
The
cumulative
concentrations
range
231-9.96
×
10
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 13, 2025
Disinfection
is
a
critical
process
to
ensure
the
safety
of
drinking
water.
To
curb
spread
various
bacteria
and
viruses,
disinfectants
are
extensively
employed
in
communities,
hospitals,
sewage
treatment
plants,
other
settings.
However,
can
produce
disinfection
by-products
(DBPs)
that
threaten
human
health.
Despite
their
importance,
research
systematic
analyses
these
risks
remain
limited.
This
study
monitored
DBPs
water
across
13
districts
counties
Hangzhou,
conducting
risk
assessment
based
on
health
model
recommended
by
United
States
Environmental
Protection
Agency.
Concentrations
12
ranged
from
0.01
µg/L
120
µg/L,
with
levels
2020–2022
generally
exceeding
those
2018–2019.
Notably,
median
concentrations
trichloromethane
peaked
at
18.00
2021.
Most
detected
higher
central
northern
parts.
spatial
distribution
was
determined
be
random.
The
associated
most
were
2021
compared
years.
Cancer
between
10−
6
4
noncarcinogenic
below
1.
demonstrates
increased
disinfectant
use
during
may
elevates
concentrations.
Chemosphere,
Journal Year:
2021,
Volume and Issue:
288, P. 132583 - 132583
Published: Oct. 18, 2021
A
case
study
of
15
wastewater
treatment
plants
(WWTPs)
at
a
full-scale
was
assessed
for
the
risks
disinfection
byproduct
(DBP)
formation,
mainly
regulated
trihalomethanes
(THMs)
and
haloacetic
acids
(HAAs)
chlorate
as
an
inorganic
recently
in
EU.
Raw
from
large,
medium/small
urban
areas
were
treated
with
single
or
combined
processes
(i.e.,
chlorine,
peracetic
acid
(PAA)
ultraviolet
(UV)
radiation).
Sampling
executed
once
month
over
seven
months
WWTPs
twice
large
ones.
Due
to
potential
risk
SARS-CoV-2
contaminated
wastewater,
several
inactivation
methods
examined
before
DBP
analysis.
step,
stability
THM4
HAA9
suffered
reductions,
monitoring
their
presence
only
effluents
after
treatments.
In
contrast,
levels
remained
unchanged
treatment;
thus
both
raw
occurrence
Results
showed
that
residues
varied
greatly
undetected
high
42.2
mg
L−1.
As
continuous
DBPs
performed,
positive
correlation
chlorine
chlorine/UV
found.
Changes
physicochemical
parameters
indicated
quality
considerably
depending
on
WWTPs,
it
influenced
formation.
all
alone
UV
significantly
increased
THMs,
HAAs,
effluents.
When
same
changed
PAA
PAA/UV,
diminished
completely.
This
highlights
during
pandemic.
It
also
how
chemical
formation
could
be
reduced
by
changing
chlorinated
technologies
particularly
if
reclaimed
water
is
intended
agricultural
irrigation
minimize
residues.
ACS ES&T Engineering,
Journal Year:
2022,
Volume and Issue:
2(9), P. 1574 - 1598
Published: Aug. 23, 2022
The
prevalence
of
organic
micropollutants
(OMPs)
and
their
persistence
in
water
supplies
have
raised
serious
concerns
for
drinking
safety
public
health.
Conventional
treatment
technologies,
including
adsorption
biological
treatment,
are
known
to
be
insufficient
treating
OMPs
demonstrated
poor
selectivity
toward
a
wide
range
OMPs.
Pressure-driven
membrane
filtration
has
the
potential
remove
many
detected
with
high
as
membrane's
molecular
weight
cutoff
(MWCO),
surface
charge,
hydrophilicity
can
easily
tailored
targeted
OMP's
size,
charge
octanol-water
partition
coefficient
(K
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(5), P. 3181 - 3192
Published: Feb. 17, 2022
Nitrogenous
aromatic
halogenated
disinfection
byproducts
(DBPs)
in
drinking
water
have
received
considerable
attention
recently
owing
to
their
relatively
high
toxicity.
In
this
study,
a
new
group
of
nitrogenous
byproducts,
halophenylacetamides
(HPAcAms),
were
successfully
identified
for
the
first
time
both
laboratory
experiments
and
realistic
water.
The
formation
mechanism
HPAcAms
during
chlorination
phenylalanine
presence
Br–
I–,
occurrence
frequencies,
concentrations
authentic
investigated,
quantitative
structure–activity
relationship
(QSAR)
model
was
developed
based
on
acquired
cytotoxicity
data.
results
demonstrated
that
could
be
formed
from
via
electrophilic
substitution,
decarboxylation,
hydrochloric
acid
elimination,
hydrolysis.
HPAcAm
yields
significantly
affected
by
contact
time,
pH,
chlorine
dose,
temperature.
Nine
with
range
0.02–1.54
ng/L
detected
samples.
Most
tested
showed
higher
compared
dichloroacetamide,
which
is
most
abundant
aliphatic
haloacetamide
DBP.
QSAR
cellular
uptake
efficiency
polarized
distributions
electrons
play
essential
roles
mechanisms.
