Environmental Monitoring and Assessment,
Год журнала:
2025,
Номер
197(3)
Опубликована: Фев. 8, 2025
Abstract
The
widespread
occurrence
of
polycyclic
aromatic
hydrocarbons
(PAHs)
in
water
bodies
is
a
significant
cause
concern
due
to
their
persistence
and
toxicity.
This
study
aimed
at
assessing
the
qualitative
quantitative
profile
16
EPA
PAHs
present
sediment
collected
from
nine
sites
along
Klip
River,
Johannesburg,
South
Africa.
target
compounds
were
extracted
by
microwave-assisted
extraction
(MAE).
method
accuracy
was
evaluated
analyzing
certified
reference
material
(CRM-104).
total
concentration
detected
samples
ranged
1.46
7.41
mg/kg.
High
molecular
weight
(HMW)
found
be
higher
concentrations
for
both
low
flow
(24.5
mg/kg)
high
(19.4
seasons
compared
lower
(LMW)
PAHs,
which
had
11.1
mg/kg
5.63
seasons.
For
identification
source
sediments,
diagnostic
ratio
employed,
revealed
petrogenic
pyrogenic
sources.
Toxicity
test
using
zebrafish
embryo
development
(ZFET)
resulted
mortality,
hatch
rate,
malformations,
indicated
contamination
sediments
River.
These
findings
suggest
that
exposure
this
system
poses
risks
environment,
aquatic
life,
humans
who
depend
on
it.
Journal of Hazardous Materials,
Год журнала:
2023,
Номер
461, С. 132546 - 132546
Опубликована: Сен. 13, 2023
Biomass
pyrolysis
is
the
anoxic
thermal
conversion
of
biomass
into
a
carbon
rich,
porous
solid,
often
called
biochar.
This
could
be
better
waste
management
alternative
for
contaminated
organic
wastes
than
incineration,
due
to
useful
properties
biochar
and
potential
sequestration.
There
are,
however,
concerns
about
formation/destruction
polycyclic
aromatic
hydrocarbons
(PAHs),
polychlorinated
biphenyls
(PCBs)
dibenzo-p-dioxins
furans
(PCDD/Fs).
Six
wastes,
including
digested
sewage
sludges,
wood
food
reject,
were
pyrolyzed
(500-800°C)
in
full-scale
relevant
unit
(1-5
kg
hr-1).
Removal
efficiencies
PCBs
PCDD/Fs
>
99%
produced
biochars.
Biochar
PAH-content
(2.7-118
mgkg-1)
was
not
significantly
correlated
feedstock
or
temperature.
PAHs
(2563-8285
mgkg-1),
(22-113
µgkg-1),
(1.8-50
ngTEQ
kg-1)
accumulated
condensate,
making
this
hazardous
best
handled
as
fuel
high
temperature
combustion.
Emission
concentrations
(0.22-421
µgNm-3)
(≤2.7
pgTEQ
Nm-3)
mainly
associated
with
particles
below
European
Union's
incineration
thresholds.
factors
ranged
from
0.0002
78
mg
tonne-1
0.002-0.45
µgTEQ
PCDD/Fs.
PCDD/F-formation
negligible
during
(≥500
°C)
(69-90%
net
loss).
Ecotoxicology and Environmental Safety,
Год журнала:
2023,
Номер
250, С. 114485 - 114485
Опубликована: Янв. 1, 2023
It
has
been
demonstrated
that
human
exposure
to
environmental
chemicals
may
have
sperm
genotoxic
potentiality.
Among
the
different
classes,
Polycyclic
Aromatic
Hydrocarbons
(PAHs)
receiving
attention
in
recent
years
due
reports
of
geno-toxicity,
a
series
reproductive
defects
and
male
infertility.
This
review
aims
substantiate
effects
PAHs
on
infertility,
with
focus
characteristics
(count,
concentration,
volume,
motility,
DNA
damage,
morphology).
To
this
end,
international
databases
such
as
Cochrane
Library,
PubMed,
Web
Science,
Embase
Ovid,
Scopus,
Google
Scholar
were
used
conduct
systematic
search
for
papers
subject,
based
PRISMA
guidelines,
published
up
24
March
2022.
The
Newcastle-Ottawa
Scale
was
subsequently
assess
quality
studies.
results
showed
there
is
significant
negative
relationship
between
metabolites
morphology,
well
an
observed
degeneration.
Also,
CYP1A1
genotype
polymorphisms
considered
representative
infertility;
highlights
more
common
infertile
people.
In
overall,
work
provides
solid
summary
existing
works
correlating
which
could
impulse
further
protective
measures
informative
campaigns
users,
workers,
general
population.
Energies,
Год журнала:
2025,
Номер
18(1), С. 209 - 209
Опубликована: Янв. 6, 2025
Because
of
their
high
persistence,
polycyclic
aromatic
hydrocarbons
(PAHs)
are
found
in
a
wide
range
settings
and
pose
health
risk
to
both
humans
other
organisms.
Degradation
PAHs
is
an
essential
part
environmental
management.
By
combining
biological
metabolism
electrochemical
processes,
bioelectrochemical
systems
(BESs)
can
degrade
provide
important
applications
by
converting
the
chemical
energy
pollutants
into
electrical
for
conversion
recovery.
This
review
provides
comprehensive
introduction
PAH
degradation
BESs,
including
sources,
effects
performance
enhancement
methods,
pathways,
dominant
microorganisms.
focusing
on
relevant
research
recent
years,
main
innovative
focuses
optimization
configuration,
electrode
preparation,
media
additions
improve
removal
PAHs.
It
demonstrates
potential
BESs
field
remediation,
especially
effectiveness
treating
difficult-to-degrade
such
as
PAHs,
concentrating
application
mechanism
degradation.
intended
inexperienced
reader
with
insight
this
area
point
out
directions
future
research,
design
microbial
community
analysis.
Chemical Communications,
Год журнала:
2022,
Номер
58(54), С. 7574 - 7577
Опубликована: Янв. 1, 2022
Porous
polydivinylbenzene
microspheres
with
high
specific
surface
area
were
prepared
by
distillation-precipitation
polymerization,
and
used
as
the
coating
material
in
headspace
solid
phase
microextraction
for
extracting
polycyclic
aromatic
hydrocarbons.
Compared
other
reported
sorbents,
PDVB
exhibits
lower
cost
higher
extraction
efficiency,
enrichment
factors
can
reach
5963-16
720.
