This
review
comprehensively
explores
various
homogeneous
and
heterogeneous
catalytic
systems
for
the
hydrogenolysis
of
oxygenated
polymeric
wastes
(OXPs),
presenting
an
adaptable
solution
to
plastic
pollution
generating
valuable
feedstock.
Sustainable Manufacturing and Service Economics,
Год журнала:
2024,
Номер
3, С. 100020 - 100020
Опубликована: Янв. 1, 2024
The
growing
demand
for
sustainable
materials
as
substitutes
conventional
has
led
to
the
need
manufacturing
practices
that
can
effectively
balance
use
of
limited
resources
and
reduce
environmental
impact
while
maintaining
economic
viability
promoting
human
welfare.
Therefore,
recycled
polylactic
acid
(rPLA)
in
3D
printing
could
be
a
promising
solution
reducing
cost
virgin
PLA
printing.
However,
low
strength
PLA-printed
components
remains
challenge.
In
addition,
may
pose
environmental,
cost,
social
issues.
it
is
necessary
understand
mechanical
properties
sustainability
potential
PLA.
Hence,
this
study
aimed
provide
an
overview
To
achieve
goal,
followed
systematic
review
approach
analysed
published
academic
research
papers
discuss
degradation
thermal
properties,
challenges
opportunities
recycling,
aspects
additively
manufactured
products.
Studies
have
shown
alternative
if
its
appropriately
modified
controlled.
Researchers
used
different
methods
upgrade
PLA,
such
using
waste
blends,
altering
process
parameters,
utilising
additives.
implications
not
been
adequately
discussed.
findings
indicate
majority
concentrated
on
evaluating
aspect,
paying
scant
attention
dimensions.
Further
required
economic,
impacts
will
assist
practitioners
academics
thinking
about
adapting
them
obtain
desired
qualities.
Microbial Cell Factories,
Год журнала:
2024,
Номер
23(1)
Опубликована: Июль 1, 2024
Abstract
Background
Plastic
is
widely
utilized
in
packaging,
frameworks,
and
as
coverings
material.
Its
overconsumption
slow
degradation,
pose
threats
to
ecosystems
due
its
toxic
effects.
While
polyhydroxyalkanoates
(PHA)
offer
a
sustainable
alternative
petroleum-based
plastics,
their
production
costs
present
significant
obstacles
global
adoption.
On
the
other
side,
multitude
of
household
industrial
activities
generate
substantial
volumes
wastewater
containing
both
organic
inorganic
contaminants.
This
not
only
poses
threat
but
also
presents
opportunities
get
benefits
from
circular
economy.
Main
body
abstract
Production
bioplastics
may
be
improved
by
using
nutrients
minerals
feedstock
for
microbial
fermentation.
Strategies
like
feast-famine
culture,
mixed-consortia
integrated
processes
have
been
developed
PHA
highly
polluted
with
high
loads.
Various
process
parameters
loading
rate,
content
(volatile
fatty
acids),
dissolved
oxygen,
operating
pH,
temperature
critical
roles
accumulation
biomass.
Research
advances
are
going
on
downstream
recovery
utilizing
combination
physical
chemical
(halogenated
solvents,
surfactants,
green
solvents)
methods.
review
highlights
recent
developments
upcycling
resources
into
PHA,
encompassing
various
strategies,
processing
methodologies,
techno-economic
analyses.
Short
conclusion
Organic
carbon
nitrogen
promising,
cost-effective
source
producing
bioplastic.
Previous
attempts
focused
enhancing
productivity
through
optimizing
culture
systems
growth
conditions.
However,
despite
technological
progress,
challenges
persist,
such
low
productivity,
intricate
processing,
scalability
issues,
properties
resulting
PHA.
Graphical
Materials,
Год журнала:
2024,
Номер
17(12), С. 2991 - 2991
Опубликована: Июнь 18, 2024
Plastic
pollution
has
escalated
into
a
critical
global
issue,
with
production
soaring
from
2
million
metric
tons
in
1950
to
400.3
2022.
The
packaging
industry
alone
accounts
for
nearly
44%
of
this
production,
predominantly
utilizing
polyethylene
terephthalate
(PET).
Alarmingly,
over
90%
the
approximately
1
PET
bottles
sold
every
minute
end
up
landfills
or
oceans,
where
they
can
persist
centuries.
This
highlights
urgent
need
sustainable
management
and
recycling
solutions
mitigate
environmental
impact
waste.
To
better
understand
PET's
behavior
promote
its
within
circular
economy,
we
examined
chemical
physical
properties,
current
strategies
most
effective
methods
available
today.
Advancing
economy
framework
by
closing
industrial
loops
demonstrated
benefits
such
as
reduced
landfill
waste,
minimized
energy
consumption,
conserved
raw
resources.
end,
identified
various
based
on
R-imperatives
(ranging
3R
10R),
focusing
latest
approaches
aimed
at
significantly
reducing
waste
2040.
Additionally,
comparison
(including
primary,
secondary,
tertiary,
quaternary
recycling,
along
concepts
"zero-order"
biological
techniques)
was
envisaged.
Particular
attention
paid
heterogeneous
catalytic
glycolysis,
which
stands
out
rapid
reaction
time
(20-60
min),
high
monomer
yields
(>90%),
ease
catalyst
recovery
reuse,
lower
costs,
enhanced
durability.
Accordingly,
use
highly
efficient
oxide-based
catalysts
glycolytic
degradation
is
underscored
promising
solution
large-scale
applications.
Plastic
pollution
is
an
ever-escalating
issue
with
detrimental
effects
on
both
the
environment
and
human
health.
breaks
down
into
smaller
pieces,
depending
size
they
are
called
macroplastics,
microplastics
(MPs),
nanoplastics
(NPs).
Some
of
these
particles
can
easily
enter
food
chain
causing
toxicity
to
many
plants
animals.
The
extensive
use
synthetic
polymers
such
as
polyethylene
(PE),
polyvinyl
chloride
(PVC),
polystyrene
(PS),
terephthalate
(PET)
poses
substantial
environmental
concerns
due
their
degradation-resistant
characteristics.
One
ways
microorganisms
address
this
by
producing
enzymes.
This
review
examines
recent
advancements
in
enzymatic
degradation
commercial-grade
pure
polymers,
including
effectiveness
enzymes
laccases,
proteases,
cutinases,
PETase,
MHETase,
governing
mechanisms
across
various
plastic
categories.
Bioinformatic
tools
multi-omics,
molecular
docking,
enzyme
mining
particularly
useful
identifying
unconventional
biocatalysts
plastic-degrading
microbes
a
culture-independent
manner.
Furthermore,
techniques
enhance
catalytic
efficiency
degrading
(PDEs)
using
modern
approaches
protein
engineering,
mutations,
chimeric
fusion,
etc.
have
also
been
reviewed.
accentuates
pivotal
role
microbial
mitigating
pollution,
associated
challenges,
suitable
prospects
achieve
closed-loop
recycling
future.
Advances in environmental engineering and green technologies book series,
Год журнала:
2025,
Номер
unknown, С. 393 - 420
Опубликована: Янв. 16, 2025
This
chapter
explores
the
transformative
potential
of
advanced
recycling
technology
(ART)
in
strengthening
local
communities
and
fostering
sustainable
growth.
With
escalating
global
waste
management
crisis
pressing
need
for
solutions,
ART
emerges
as
a
pivotal
innovation.
The
discusses
use
Art
Recycling
resource,
highlighting
its
environmental
benefits,
socio-economic
integration
with
AI
IoT
while
also
ecological
impact.
successful
implementations
globally,
challenges
faced,
policy
frameworks,
strategic
planning,
government
incentives,
public-private
partnerships,
infrastructure
development.
It
advocates
holistic
approach
to
management,
integrating
address
concerns,
stimulate
economies,
promote
social
equity,
achieve
sustainability
goals.