Microplastic,
an
emerging
pollutant
in
the
aquatic
environment,
raises
concerns
about
its
role
as
a
potential
carrier
of
pathogens
and
organic
pollutants.
The
study
investigates
survival
extensively
drug-resistant
bacterium
Acinetobacter
baumannii
presence
priority
substances,
benzene
derivates:
trichlorobenzenes,
pentachlorobenzene,
hexachlorobenzene,
trifluralin
primary
polyethylene
microplastics.
results
indicated
that
amount
adsorbed
substances
applied
to
microplastics
mixture
solution
is
slightly
lower
than
sorption
from
individual
solutions.
In
addition,
GC/MS
analysis
non-target
indicate
chemicals
plastic
manufacturing
or
plastic-containing
products
can
be
released
into
environment
over
time,
underlining
importance
considering
this
factor
when
assessing
environmental
impact
A.
was
not
affected
by
derivates
microplastic
particles
up
concentration
10.000
mg/L
water
medium.
Microscopic
confirmed
able
colonise
form
biofilm
on
with
sorbed
derivates.
This
indicates
promote
spread
pollutants
potentially
pathogenic
bacteria
environment.
Frontiers of Environmental Science & Engineering,
Год журнала:
2024,
Номер
18(6)
Опубликована: Апрель 30, 2024
Abstract
Insects
damaging
and
penetrating
plastic
packaged
materials
has
been
reported
since
the
1950s.
Radical
innovation
breakthroughs
of
biodegradation
have
initiated
discovery
plastics
by
Tenebrio
molitor
larvae
in
2015
followed
Galleria
mellonella
2017.
Here
we
review
updated
studies
on
insect-mediated
plastics.
Plastic
insect
larvae,
mainly
some
species
darkling
beetles
(Tenebrionidae)
pyralid
moths
(Pyralidae)
is
currently
a
highly
active
potentially
transformative
area
research.
Over
past
eight
years,
publications
increased
explosively,
including
discoveries
ability
different
to
biodegrade
plastics,
performance,
contribution
host
microbiomes,
impacts
polymer
types
their
physic-chemical
properties,
responsible
enzymes
secreted
gut
microbes.
To
date,
almost
all
major
polyethylene
(PE),
polypropylene
(PP),
polyvinyl
chloride
(PVC),
terephthalate
(PET),
polyurethane
(PUR),
polystyrene
(PS)
can
be
biodegraded
T.
ten
other
representing
Tenebrionidae
Pyralidae
families.
The
processes
are
symbiotic
reactions
or
performed
synergistic
efforts
both
gut-microbes
rapidly
depolymerize
with
hourly
half-lives.
digestive
ezymens
bioreagents
screted
insects
play
an
essential
role
plasatic
certain
New
research
itself,
transcriptomes,
proteomes
metabolomes
evaluated
mechanisms
insects.
We
conclude
this
discussing
future
perspectives
Cleaner Waste Systems,
Год журнала:
2024,
Номер
7, С. 100136 - 100136
Опубликована: Фев. 12, 2024
Understanding
the
biodegradation
rate
of
polyethylene
(PE)
plastic
waste
mediated
by
bacterial-fungal
consortium
(BFC)
is
important
to
ensure
effective
design
process
bioremediation
technology.
The
aims
this
study
were
scrutinize
behaviors
PE
degradation
BFC
colonies
numerically
simulated
experimental
data
using
modified
mass
transfer
factor
models
and
analyze
kinetics
mechanisms
internal,
external
global
transfer.
performance
rectangular
reactor
(RR)
biologically
degrade
increased
up
61.5%
shows
an
efficiency
55.9%
stimulated
presence
colonies.
Trend
in
variation
internal
almost
same
with
that
far
higher
than
(EMT).
rate-limiting
step
dependent
on
resistance
EMT.
application
aimed
improve
contributes
advancing
future
environmental
engineering
technologies.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(40), С. 15099 - 15111
Опубликована: Сен. 26, 2023
It
remains
unknown
whether
plastic-biodegrading
macroinvertebrates
generate
microplastics
(MPs)
and
nanoplastics
(NPs)
during
the
biodegradation
of
plastics.
In
this
study,
we
utilized
highly
sensitive
particle
analyzers
pyrolyzer-gas
chromatography
mass
spectrometry
(Py-GCMS)
to
investigate
possibility
generating
MPs
NPs
in
frass
polystyrene
(PS)
low-density
polyethylene
(LDPE)
foams
by
mealworms
(Tenebrio
molitor
larvae).
We
also
developed
a
digestive
biofragmentation
model
predict
unveil
fragmentation
process
ingested
The
removed
77.3%
PS
71.1%
PE
over
6-week
test
period.
Biodegradation
both
polymers
was
verified
increase
δ13C
signature
residual
plastics,
changes
molecular
weights,
formation
new
oxidative
functional
groups.
accumulated
due
biofragmentation,
with
exhibiting
maximum
percentage
number
at
2.75
7.27
μm,
respectively.
Nevertheless,
were
not
detected
using
laser
light
scattering
sizer
detection
limit
10
nm
Py-GCMS
analysis.
predicted
that
progressively
size-reduced
rapidly
biodegraded,
indicating
shorter
half-life
smaller
plastic
particles
have.
This
study
allayed
concerns
regarding
accumulation
plastic-degrading
provided
critical
insights
into
factors
controlling
MP
NP
generation
macroinvertebrate-mediated
biodegradation.
International Journal of Polymer Science,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
The
chemical
structure
of
low‐density
polyethylene
(PE),
which
is
responsible
for
its
incompatibility
and
durability,
has
a
significant
impact
on
the
degradation
process.
present
study
examined
effects
combining
plasma
treatment
technology
with
addition
prooxidant
(designated
hereafter
as
Ox)
into
PE
matrix
hydrophilicity
resulting
blends.
films
PE/poly(
ε
‐caprolactone)
(PCL)
Ox‐PE/PCL
blends
their
homopolymers
were
subjected
to
radiofrequency
(RFP)
treatment.
Subsequently,
samples
compost
test
at
58
°
C
±
2
period
24
months.
Contact
angle
measurements,
Fourier‐transform
infrared
spectroscopy,
thermogravimetric
analysis
employed
evaluate
surface
properties
both
before
after
Moreover,
biodegradation
all
was
assessed
through
weight
loss
spectroscopy.
findings
substantiate
that
RFP
markedly
diminished
contact
water,
thereby
transforming
hydrophobic
surfaces
hydrophilic
surfaces.
Following
exposure
subsequent
storage
in
air
60
days,
exhibited
increased
nature.
Among
various
films,
Ox‐PE75/PCL25
blend
demonstrated
most
pronounced
reduction
loss,
underscores
synergistic
oxidation
samples.
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
480, С. 136264 - 136264
Опубликована: Окт. 23, 2024
Polyethylene
is
widely
used
but
highly
resistant
to
biodegradation,
owing
its
composition
of
only
a
hydrocarbon
backbone.
For
biodegradation
occur,
oxidation
within
the
polymer
needs
be
initiated.
Galleria
mellonella
was
first
insect
discovered
autonomously
oxidize
polyethylene
without
aid
gut
microbes.
However,
specific
enzyme
remains
unidentified.
Here,
we
identified
for
time
two
candidates
cytochrome
P450
(CYP)
6B2-GP04
and
CYP6B2-13G08
from
G.
midgut.
Both
candidate
clones
oxidized
efficiently,
generating
short-chain
aliphatic
compounds,
with
CYP6B2-GP04
exhibiting
higher
activity
than
in
yeast
cells.
In
silico
structural
modeling
approaches
revealed
that
Phe118
essential
interacting
hydrocarbons,
which
further
validated
by
mutating
phenylalanine
glycine.
Furthermore,
directed
evolution
led
identification
an
variant
significantly
increased
efficiency.
Our
findings
offer
promising
enzyme-based
solutions
potentially
mitigating
polyethylene-driven
plastic
pollution.
Urban Resilience and Sustainability,
Год журнала:
2024,
Номер
2(4), С. 348 - 364
Опубликована: Янв. 1, 2024
<p>Mangrove
ecosystems
serve
as
critical
natural
filters
and
retention
points
for
continental
waste
entering
the
sea,
making
them
primary
accumulation
sites
solid
waste,
such
plastics.
These
plastics
undergo
transformation
from
macroplastics
to
microplastics
through
weathering.
We
investigated
resistance
degradation
process
of
plastic
in
mangrove
swamp
Botanical
Garden
at
Autonomous
University
Carmen,
focusing
specifically
on
its
into
over
time.
By
quantifying
collected
identifying
by-products,
we
evaluated
these
materials,
which
impact
environment
become
microplastics.
Our
analysis
provided
a
detailed
approximation
this
quantification
examination
by-products.
explored
dynamics
their
environmental
ramifications.
Using
data
derived
samples,
estimated
an
annual
generation
12,300
kg
1,351
This
latter
figure
represents
11%
total
posing
significant
threat
biodiversity
ecological
balance
mangroves.
findings
underscore
urgent
need
more
effective
sustainable
management
practices
within
ecosystems.
Furthermore,
research
emphasizes
importance
continuous
monitoring
investigation
processes
better
understand
long-term
effects
pollution
environments
develop
strategies
mitigate
adverse
impacts.</p>
