Water,
Journal Year:
2023,
Volume and Issue:
15(6), P. 1164 - 1164
Published: March 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.
Journal of environmental chemical engineering,
Journal Year:
2023,
Volume and Issue:
11(5), P. 110755 - 110755
Published: Aug. 16, 2023
Wastewater
treatment
plants
(WWTPs)
have
been
identified
as
hotspots
for
the
spread
of
micro(nano)plastics
(MPs/NPs)
in
water.
Advanced
oxidation
processes
(AOPs)
emerged
promising
alternatives
tackling
MPs/NPs
pollution,
however,
number
studies
on
this
topic
remains
quite
limited
and
needs
further
research.
In
study,
feasibility
photo-Fenton
process
(UV/
H2O2/
Fe3+)
carried
out
at
ambient
conditions
using
a
broad-spectrum
UV-Vis
lamp
was
investigated
degradation
polystyrene
(PS)
NPs
The
impact
main
variables
process,
namely
initial
PS
concentration,
Fe3+
pH,
H2O2
dose
particle
size,
evaluated.
Under
optimized
operating
([PS
NPs]0
=
20
mg
L-1;
[Fe3+]0
1
[H2O2]0
130
pH0
3
T
25
ºC),
complete
mineralization
(140
nm)
achieved
40
min.
outstanding
performance
mainly
due
to
wavelength
light
intensity
UV-lamp
employed.
To
best
our
knowledge,
is
first
study
field
photoassisted
AOPs
reporting
fast
water,
under
conditions.
According
results,
can
be
applied
higher
loads
larger
sizes
by
adjusting
supplied
oxidant
extending
reaction
time.
Hence,
displays
great
potential
producing
high-quality
reclaimed
water
and/or
combined
with
conventional
separation
treat
concentrate
streams
mineralize
WWTPs.
Sustainable Chemistry for the Environment,
Journal Year:
2024,
Volume and Issue:
6, P. 100088 - 100088
Published: April 3, 2024
Predictions
indicate
a
concerning
surge
in
plastic
waste,
expected
to
reach
380
million
tonnes
by
2040
from
188
2016.
Strategies
combat
this
could
reduce
yearly
waste
140
tonnes,
but
may
not
fully
address
existing
pollution
levels.
Urgent
action
is
needed
devise
safe
and
effective
methods
for
degrading
microplastics.
Use
of
microorganisms
ranging
bacteria
algae
help
the
biodegradation
these
particles
has
been
employed
researched
upon
extensively.
Microorganisms
belonging
following
genus:
Bacillus,
Actinobacteria,
Pseudomonas,
Aspergillus,
Penicillium,
Cyanobacteria
various
species
microalgae
have
shown
remarkable
capabilities
degrade
microplastic
present
environment.
The
main
focus
review
highlight
potential
organisms
that
can
with
also
touches
new
biotechnological
advancements
like
use
genetically
modified
aid
It
highlights
gaps
research
regarding
large
scale
combination
other
degradation
techniques
order
efficiently
safely
ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
4(4), P. 1688 - 1700
Published: Jan. 29, 2024
Plastic
pollution
has
become
a
hot
topic
for
researchers
due
to
its
ubiquitous
presence
in
the
environment.
Technologies
that
can
handle
microplastics
(MPs)
aquatic
ecosystems
are
still
emerging
and
require
more
research
practical
viability.
This
study
demonstrates
hybrid
approach
combines
Fenton
reaction
with
hydrothermal
process
oxidize
MPs.
The
system
attained
weight
loss
of
75.15%
16
h,
increasing
93.79%
20
h
98.43%
24
h.
water
contact
angle
unaltered
MPs
was
86.9
±
2.3°,
which
gradually
decreased
53.27
0.8°,
confirmed
insertion
carbonyl
hydroxyl
functional
groups
into
polymer
chain
resulted
an
increase
their
hydrophilicity.
alkyl
radical
mechanism
might
initiate
pathway
scissoring
carbon
chain.
filtrate
showed
no
ecotoxicity,
meaning
it
would
be
safe
enough
disposed
Therefore,
this
will
provide
basic
understanding
investigate
further
processes
solve
problem
plastic
achieve
United
Nations
(UN)
sustainable
development
goal
(Goal
No.
14:
Life
below
water).
