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.
Chemical Engineering Journal,
Год журнала:
2024,
Номер
493, С. 152490 - 152490
Опубликована: Май 22, 2024
There
is
a
growing
interest
in
developing
new
targeted
degradation
technologies
for
the
removal
of
micro-
and
nanoplastics
(NPs)
water,
corresponding
to
increased
public
concerns
regarding
their
potential
negative
impacts
on
urban
water
systems,
consequently
human
life
quality.
Recently,
Advanced
Oxidation
Processes
(AOPs)
have
been
proposed
as
promising
treatment
alternatives
effective
NPs
water.
However,
selection
appropriate
analytical
methods
monitoring
these
oxidation
tests
remains
challenge.
Herein,
feasibility
different
characterization
strategies
evolution
upon
was
systematically
studied
using
polystyrene
(PS)
particle
sizes
(D0
=
140,
252,
460,
909
nm)
model
plastic
pollutants.
To
quantify
Total
Organic
Carbon
(TOC),
Chemical
Oxygen
Demand
(COD)
turbidity
measurements
were
assessed.
Moreover,
correlated
size
PS
concentration
by
response
surface.
Among
techniques
employed
characterize
solid
particles,
transmission
electronic
microscopy
(TEM)
used
evaluate
morphology
size.
Alternatively,
viability
Dynamic
Light
Scattering
(DLS),
Nanoparticle
Tracking
Analysis
(NTA)
Atomic
Force
Microscopy
(AFM)
determine
discussed.
surface
modifications
explored
Fourier-Transform
Infrared
Spectroscopy
(FTIR).
As
proof
concept,
photo-Fenton
investigated
at
ambient
conditions
fully
characterized
mentioned
techniques.
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.
