Water,
Год журнала:
2023,
Номер
15(6), С. 1164 - 1164
Опубликована: Март 17, 2023
Wastewater
treatment
plants
(WWTPs)
have
been
identified
as
important
point
sources
of
micropollutants
and
microplastics
into
the
environment.
Existing
fourth
cleaning
steps
are
designed
to
remove
dissolved
micropollutants,
however
do
not
target
dispersed
solids
such
microplastics.
Therefore,
ability
an
Advanced
Oxidation
Process
(AOP)
Granular
Activated
Carbon
(GAC)
in
parallel
serial
connection
was
investigated
determined.
The
pilot
were
operated
at
municipal
WWTP
Landau,
Germany,
a
three-step
biological
waste
plant
with
capacity
80,000
population
equivalents.
A
Nile
red-based
detection
method
applied
quantify
Neither
showed
significant
removal
To
achieve
simultaneous
using
organosilanes
for
microplastics’
connected
series
GAC.
When
added
water,
attach
collect
them
agglomerates
by
chemically
binding
water-induced
sol–gel
process.
flow
rate
12
m3/h
retention
time
10
min;
GAC
2
1
h.
An
average
reduction
86.2
±
2.0%
60.9
27.5%
reached.
Thus,
there
is
effective
Further
optimizations
expected
result
more
stable
higher
performance.
Abstract
Microplastics
are
polymer-based
materials
with
carbon
as
their
main
framework.
During
degradation,
they
release
greenhouse
gases
such
dioxide
and
methane.
Additionally,
environmental
microplastics
can
enter
plant
tissues,
triggering
oxidative
stress
in
cells,
adversely
affecting
photosynthesis,
metabolism,
gene
expression,
other
growth
parameters.
This
reduction
efficiency
sequestering
utilizing
atmospheric
indirectly
impacts
global
cycling,
exacerbating
the
effect.
Furthermore,
significantly
alter
soil
structure
composition
of
microbial
communities,
emissions
dioxide,
methane,
nitrous
oxide,
thus
promoting
gas
emissions.
Increasing
research
suggests
a
mutual
reinforcement
between
microplastic
pollution
climate
warming,
where
exacerbates
rise
average
temperature
leads
to
resuspension
sediments,
intensifying
environment.
article
primarily
focuses
on
different
ecosystems
relationship
warming.
It
summarizes
effects
marine,
terrestrial,
ecosystems,
well
mechanisms
by
which
change
affect
ecosystem
services.
By
delving
into
intricate
connection
emissions,
this
paper
aims
raise
awareness
caused
calls
for
further
change,
ultimate
goal
protecting
human
health.
Graphical
The Science of The Total Environment,
Год журнала:
2022,
Номер
861, С. 160665 - 160665
Опубликована: Дек. 5, 2022
Water
treatment
plants'
effluents
are
hotspots
of
microplastics
(MPs)
and
microfibres
(MFs)
released
into
the
aquatic
environment
because
they
were
not
designed
to
capture
these
particles.
Special
attention
should
be
given
MFs,
since
mainly
come
from
laundry
related
one
main
MP
shapes
detected
in
water
wastewater
plants.
In
this
sense,
Advanced
Oxidation
Processes
(AOPs)
could
a
feasible
solution
for
tackling
MF
pollution,
however,
it
is
still
premature
extract
conclusions
due
limited
number
studies
on
degradation
particles
(specifically
MFs)
using
AOPs.
This
review
addresses
impacts
AOPs
MPs/MFs,
focusing
their
efficiency,
toxicity,
sustainability
processes,
among
other
aspects.
The
points
out
that
polyamide
MFs
can
achieve
mass
loss
>90%
by
photocatalytic
system
TiO2.
Also,
low
oxidation
MPs
(<30
%)
conventional
Fenton
process
affects
surface
MPs.
However,
Fenton-based
processes
provide
better
removal
some
types
MPs,
temperatures
>100
°C,
reaction
time
≥
5
h,
initial
pH
≤
3,
achieving
weight
up
96
%.
Despite
results,
operating
conditions
required
ones
reported
so
far
full-scale
application.
Additionally,
ozonation
plants
has
increased
fragmentation
(including
MFs),
leading
new
generation
More
needed
toxicity
effects
intermediates
methods
analysis
employed
MPs/MFs
effluent
standardized
compared
effectively.
Future
research
focus
AOP
(power
consumption,
chemicals
consumed
operational
costs)
understanding
applicability
adapted
treatment.
Journal of Hazardous Materials,
Год журнала:
2022,
Номер
443, С. 130313 - 130313
Опубликована: Ноя. 2, 2022
Microplastics
(MPs)
are
contaminants
of
emerging
concern
that
accumulate
in
various
environments,
where
they
pose
threats
to
both
the
ecosystem
and
public
health.
Since
MPs
have
been
detected
drinking
water
resources
wastewater
effluents,
more
efficient
treatment
is
needed
at
plants
(WWTPs)
(DWTPs).
This
review
discusses
potential
biological,
photochemical,
Fenton
(-like)
systems,
ozonation,
other
oxidation
processes
terms
their
indicators
such
as
mass
loss
surface
oxidation.
The
were
further
analyzed
limitations
environmental
implications.
Most
previous
studies
examining
degradation
using
conventional
treatments—such
UV
disinfection,
chlorination—employed
significantly
higher
doses
than
common
applied
DWTPs
WWTPs.
Owing
dose
gaps,
oxidative
transformation
observed
many
not
likely
occur
under
practical
conditions.
Some
novel
showed
promising
efficiencies,
while
them
yet
on
a
larger
scale
due
high
costs
lack
extensive
basic
research.
Health
impacts
related
discharge
oxidized
effluents
should
be
considered
carefully
different
aspects:
role
vectors
external
pollutants,
release
organic
compounds
(including
byproducts
from
oxidation)
fragmentation
into
smaller
particles
circulate
well
possibility
bioaccumulation.
Future
research
also
focus
ways
incorporate
developed
WWTPs
mitigate
contamination.
Membranes,
Год журнала:
2023,
Номер
13(1), С. 77 - 77
Опубликована: Янв. 8, 2023
Ultrafiltration
(UF)
processes
exhibit
high
removal
efficiencies
for
suspended
solids
and
organic
macromolecules,
while
UF
membrane
fouling
is
the
biggest
obstacle
affecting
wide
application
of
technology.
To
solve
this
problem,
various
pretreatment
measures,
including
coagulation,
adsorption,
advanced
oxidation,
prior
to
have
been
proposed
applied
in
actual
water
treatment
processes.
Previously,
researchers
mainly
focused
on
contribution
natural
macromolecular
pollutants
fouling,
mechanisms
influence
emerging
(EPs)
(such
as
antibiotics,
microplastics,
antibiotic
resistance
genes,
etc.)
still
need
be
determined.
This
review
introduces
efficiency
separation
mechanism
EPs
pretreatments
combined
with
technology
evaluates
degree
based
membrane's
materials/pores
structural
characteristics
cake
layer.
paper
shows
that
current
process
should
actively
developed
aim
overcoming
specific
problems
order
meet
technical
requirements
efficient
EPs.
