International Journal of Sustainable Engineering,
Год журнала:
2024,
Номер
17(1), С. 1 - 18
Опубликована: Июль 8, 2024
Microplastics
(MPs)
present
a
pressing
environmental
concern,
posing
formidable
challenges
to
their
effective
elimination
from
water
systems.
Bioadsorbents
offer
promising,
eco-friendly,
and
cost-effective
alternative
traditional
removal
methods.
This
review
analyzes
206
research
papers
(2016-January
2024)
explore
recent
advances
in
bioadsorbent
design
application
for
microplastic
removal.
We
examine
the
sources
ecological
impacts
of
MPs,
then
delve
into
most
studied
bioadsorbents:
biochar
(51.9%),
biomass-derived
activated
carbon
(7.4%),
synthetic
sponges/aerogels
(25.9%),
graphene-based
materials
(14.8%).
The
critically
factors
influencing
MP
adsorption
by
these
materials,
including
type
size,
adsorbent
properties,
experimental
conditions.
Reported
efficiencies
ranged
31%
100%,
with
polystyrene
(52%)
being
common
test
polymer.
Finally,
intricate
mechanisms
MP-bioadsorbent
interaction
are
discussed.
highlight
key
future
directions
optimising
scaling
up
bioadsorbent-based
removal,
acknowledging
early
stage
this
promising
sustainable
approach.
Eco-Environment & Health,
Год журнала:
2023,
Номер
3(1), С. 21 - 29
Опубликована: Окт. 14, 2023
The
presence
of
trace
organic
pollutants
in
the
effluent
wastewater
treatment
plants
(WWTPs)
poses
considerable
risks
to
aquatic
organisms
and
human
health.
A
large-scale
survey
302
46
Chinese
WWTPs
was
conducted
gain
an
improved
understanding
their
occurrence
ecological
risks.
data
showed
that
216
compounds
11
chemical
classes
had
been
detected
effluents.
sum
concentrations
contaminants
ranged
from
1,392
ng/L
35,453
ng/L,
with
maximum
concentration
perfluoroalkyl
substances
(PFASs)
recorded
as
highest
(30,573
ng/L),
which
markedly
less
than
reported
185,000
for
38
American
WWTPs.
bisphenol
analogs
(BPs)
up
4,422
significantly
higher
those
France,
Germany,
Japan,
Korea,
U.S.
PFASs
BPs
were
major
pollutants,
accounting
59%
total
pollution.
Additionally,
a
119
found
have
(RQ
>
0.01).
Among
these,
23
1.0)
warrant
attention
should
be
prioritized
removal.
This
study
lists
valuable
information
controlling
priority
WWTP
China.
Chemosphere,
Год журнала:
2024,
Номер
361, С. 142536 - 142536
Опубликована: Июнь 4, 2024
Domestic
wastewater
treatment
plants
(WWTPs)
play
a
vital
role
in
limiting
the
release
of
microplastics
(MP)
into
environment.
This
study
examined
MP
removal
efficiency
from
five
centralized
and
four
decentralized
domestic
WWTPs
Bangkok,
Thailand.
concentrations
sludge
were
comparable
between
WWTPs,
despite
these
serving
smaller
populations
having
limited
capacity.
The
elimination
MPs
ranged
50
to
96.8%
14.2
53.6%
WWTPs.
It
is
noted
that
retained
20,000
228,100
MPs/kg
dry
weight.
prevalence
synthetic
fibers
fragments
could
be
attributed
their
pathways
laundry
or
car
tires,
accidental
variety
plastic
wastes
ended
up
investigated
Removal
was
influenced
by
several
impact
factors
including
initial
concentrations,
longer
retention
times,
fragmentation,
variations
leading
different
activated
process
configurations.
Sewage
has
become
primary
location
for
accumulation
incoming
entering
leaving
each
unit
varied
due
unique
characteristics
MPs,
efficiencies.
While
extended
hydraulic
period
decreased
efficacy,
WWTP
with
two-stage
achieved
highest
efficiency.
Desalination and Water Treatment,
Год журнала:
2024,
Номер
318, С. 100399 - 100399
Опубликована: Апрель 1, 2024
Microplastics
are
pollutants
formed
from
fragmented
plastics
and
also
industrially
manufactured
for
personal
care
cosmetic
products.
They
range
1
µm
to
5
mm
ubiquitous
in
the
environment
due
their
tiny
size,
lightweight,
wide
applications.
Ecotoxicological
studies
have
shown
that
they
can
induce
multiple
harmful
effects
on
exposed
organisms
humans.
Wastewater
treatment
plants
(WWTPs)
drawn
interest
of
researchers
regulatory
bodies
worldwide
as
a
point
source
microplastics
discharge
environment.
In
absence
standardized
methodology,
microplastic
monitoring
WWTPs
has
been
marked
by
distinct
variations
sample
processing
analytical
procedures
which
limit
comparison
results.
This
review
provides
detailed
analysis
methods
patterns,
analytical,
size
characterization,
quantification
WWTPs.
According
procedural
steps
extraction
reported
reviewed
studies,
12
patterns
three
categories
approaches
(single,
dual,
multiple)
were
identified.
quantified
using
gravimetry
method,
mass
sub-sample
method
(based
extrapolation)
with
latter
being
most
applied
technique.
Microplastic
characterization
accomplished
two
main
methods:
sieve-based
technique
computing-based
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
30, С. 103073 - 103073
Опубликована: Фев. 16, 2023
Nanoplastic
(NP)
is
an
emerging
contaminant
in
recent
years,
and
it
has
been
detected
water
even
polar
ice.
Further
verification
of
the
toxic
potential
NPs
marine
organisms
needed
so
that
ecological
threat
can
be
minimized.
This
study
investigated
effects
0.1,
0.2,
0.5,
1.0μg
(g
shrimp)−1
polystyrene
nanoplastics
(PS-NPs)
on
immune
oxidative
response
Litopenaeus
vannamei
(L.
vannamei)
survival
rate
was
recorded
everyday.
After
7
days,
antioxidant
parameters
were
analyzed,
histopathology
accumulation
PS-NPs
observed.
The
results
indicated
shrimp
receiving
>
0.5μg
remarkably
decreased
than
control.
phagocytic
activity
(PA)
different
concentrations
Respiratory
burst
(RB)
increased
However,
superoxide
dismutase
(SOD)
0.2μg
SOD
catalase
(CAT)
activity,
mRNA
expression,
malondialdehyde
(MDA)
content
In
addition,
CAT
expression
shows
cause
muscle,
hepatopancreas,
midgut
gland,
gill
damage.
These
indicate
toxicity
to
L.
by
disruption,
stress,
