Waste Management,
Год журнала:
2023,
Номер
164, С. 154 - 161
Опубликована: Апрель 12, 2023
The
effect
of
alkali-based
pretreatment
on
the
methanization
bioplastics
was
investigated.
tested
included
PHB
[poly(3-hydroxybutyrate)],
PHBH
[poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)],
PHBV
[poly(3-hydroxybutyrate-co-3-hydroxyvalerate],
PLA
(polylactic
acid),
and
a
PLA/PCL
[poly(caprolactone)]
80/20
blend.
Prior
to
tests,
powdered
polymers
(500-1000
μm)
at
concentration
50
g/L
were
subjected
alkaline
using
NaOH
1
M
for
PLA/PCL,
2
PHB-based
materials.
Following
7
days
pretreatment,
amount
solubilized
carbon
its
blend
accounted
92-98%
total
initial
carbon,
while
lower
recoveries
recorded
most
materials
(80-93%),
as
revealed
by
dissolved
organic
analysis.
pretreated
then
biogas
production
means
mesophilic
biochemical
methane
potential
tests.
Compared
unpretreated
PHBs,
rates
PHBs
accelerated
factor
2.7
9.1
with
comparable
(430
NmL
CH4/g
material
feed)
or
slightly
(15%
in
case
PHBH)
yields,
despite
featuring
1.4-2.3
times
longer
lag
phases.
Both
materials,
blend,
only
extensively
digested
when
pretreated,
yielding
about
360-380
CH4
per
gram
fed.
Unpretreated
PLA-based
showed
nearly
zero
under
timeframe
experimental
conditions
tested.
Overall,
results
suggested
that
can
help
enhance
kinetics
bioplastics.
Environmental Science and Ecotechnology,
Год журнала:
2023,
Номер
15, С. 100254 - 100254
Опубликована: Фев. 20, 2023
The
current
transition
to
sustainability
and
the
circular
economy
can
be
viewed
as
a
socio-technical
response
environmental
impacts
need
enhance
overall
performance
of
linear
production
consumption
paradigm.
concept
biowaste
refineries
feasible
alternative
petroleum
has
gained
popularity.
Biowaste
become
an
important
raw
material
source
for
developing
bioproducts
biofuels.
Therefore,
effective
management
systems
biofuels
are
crucial
employed
pillars
economy.
Bioplastics,
typically
plastics
manufactured
from
bio-based
polymers,
stand
contribute
more
sustainable
commercial
plastic
life
cycles
part
in
which
virgin
polymers
made
renewable
or
recycled
materials.
Various
frameworks
strategies
utilized
model
illustrate
additional
patterns
fossil
fuel
bioplastic
feedstock
prices
various
governments'
long-term
policies.
This
review
paper
highlights
harmful
fossil-based
on
environment
human
health,
well
mass
eco-friendly
alternatives
such
biodegradable
bioplastics.
Utilizing
new
types
bioplastics
derived
resources
(e.g.,
biowastes,
agricultural
wastes,
microalgae)
choosing
appropriate
end-of-life
option
anaerobic
digestion)
may
right
direction
ensure
production.
Clear
regulation
financial
incentives
still
required
scale
niche
large-scale
market
applications
with
truly
impact.
Foods,
Год журнала:
2022,
Номер
11(19), С. 3087 - 3087
Опубликована: Окт. 5, 2022
The
demand
to
develop
and
produce
eco-friendly
alternatives
for
food
packaging
is
increasing.
huge
negative
impact
that
the
disposal
of
so-called
“single-use
plastics”
has
on
environment
propelling
market
search
new
solutions,
requires
initiatives
drive
faster
responses
from
scientific
community,
industry,
governmental
bodies
adoption
implementation
materials.
Bioplastics
are
an
alternative
group
materials
partly
or
entirely
produced
renewable
sources.
Some
bioplastics
biodegradable
even
compostable
under
right
conditions.
This
review
presents
different
properties
these
materials,
mechanisms
biodegradation,
their
environmental
impact,
but
also
a
holistic
overview
most
important
available
in
potential
application
packaging,
consumer
perception
bioplastics,
regulatory
aspects,
future
challenges.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
271, С. 115942 - 115942
Опубликована: Янв. 12, 2024
The
global
production
and
consumption
of
plastics,
as
well
their
deposition
in
the
environment,
are
experiencing
exponential
growth.
In
addition,
mismanaged
plastic
waste
(PW)
losses
into
drainage
channels
a
growing
source
microplastic
(MP)
pollution
concern.
However,
complete
understanding
environmental
implications
throughout
life
cycle
is
yet
to
be
fully
understood.
Determining
potential
extent
which
MPs
contribute
overall
ecotoxicity
possible
through
monitoring
PW
release
MP
removal
during
remediation.
Life
assessments
(LCAs)
have
been
extensively
utilized
many
comparative
analyses,
such
comparing
petroleum-based
plastics
with
biomass
single-use
multi-use
alternatives.
These
typically
yield
unexpected
or
paradoxical
results.
Nevertheless,
there
still
paucity
reliable
data
tools
for
conducting
LCAs
on
plastics.
On
other
hand,
impact
so
far
not
considered
LCA
studies.
This
due
absence
inventory-related
regarding
releases
characterization
factors
necessary
quantify
effects
MP.
Therefore,
this
review
paper
conducts
comprehensive
literature
order
assess
current
state
knowledge
impacts
that
occur
along
strategies
management
LCA.
International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(9), С. 7696 - 7696
Опубликована: Апрель 22, 2023
Plastics-based
materials
have
a
high
carbon
footprint,
and
their
disposal
is
considerable
problem
for
the
environment.
Biodegradable
bioplastics
represent
an
alternative
on
which
most
countries
focused
attention
to
replace
of
conventional
plastics
in
various
sectors,
among
food
packaging
significant
one.
The
evaluation
optimal
end-of-life
process
bioplastic
waste
great
importance
sustainable
use.
In
this
review,
advantages
limits
different
management
routes—biodegradation,
mechanical
recycling
thermal
degradation
processes—are
presented
common
categories
biopolymers
market,
including
starch-based
bioplastics,
PLA
PBAT.
analysis
outlines
that
unless
blended
with
other
biopolymers,
exhibit
good
biodegradation
rates
are
suitable
by
composting,
while
PBAT
incompatible
require
strategies.
very
promising
chemical
recycling,
enabling
building
blocks
recovery
valuable
chemicals
from
waste,
according
principles
circular
economy.
Nevertheless,
only
few
articles
process,
highlighting
need
research
fully
exploit
potentiality
route.
