Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(9), P. 5612 - 5701
Published: March 14, 2023
Plastics
are
everywhere
in
our
modern
way
of
living,
and
their
production
keeps
increasing
every
year,
causing
major
environmental
concerns.
Nowadays,
the
end-of-life
management
involves
accumulation
landfills,
incineration,
recycling
to
a
lower
extent.
This
ecological
threat
environment
is
inspiring
alternative
bio-based
solutions
for
plastic
waste
treatment
toward
circular
economy.
Over
past
decade,
considerable
efforts
have
been
made
degrade
commodity
plastics
using
biocatalytic
approaches.
Here,
we
provide
comprehensive
review
on
recent
advances
enzyme-based
biocatalysis
design
related
processes
recycle
or
upcycle
plastics,
including
polyesters,
polyamides,
polyurethanes,
polyolefins.
We
also
discuss
scope
limitations,
challenges,
opportunities
this
field
research.
An
important
message
from
that
polymer-assimilating
enzymes
very
likely
part
solution
reaching
Angewandte Chemie International Edition,
Journal Year:
2020,
Volume and Issue:
59(36), P. 15402 - 15423
Published: March 11, 2020
Abstract
Increasing
the
stream
of
recycled
plastic
necessitates
an
approach
beyond
traditional
recycling
via
melting
and
re‐extrusion.
Various
chemical
processes
have
great
potential
to
enhance
rates.
In
this
Review,
a
summary
various
routes
assessment
life‐cycle
analysis
is
complemented
by
extensive
list
developed
companies
active
in
recycling.
We
show
that
each
currently
available
applicable
for
specific
waste
streams.
Thus,
only
combination
different
technologies
can
address
problem.
Research
should
focus
on
more
realistic,
contaminated
mixed
streams,
while
collection
sorting
infrastructure
will
need
be
improved,
is,
stricter
regulation.
This
Review
aims
inspire
both
science
innovation
production
higher
value
quality
products
from
suitable
reuse
or
valorization
create
necessary
economic
environmental
push
circular
economy.
Macromolecular Rapid Communications,
Journal Year:
2020,
Volume and Issue:
42(3)
Published: Sept. 30, 2020
Abstract
The
current
global
plastics
economy
is
highly
linear,
with
the
exceptional
performance
and
low
carbon
footprint
of
polymeric
materials
at
odds
dramatic
increases
in
plastic
waste.
Transitioning
to
a
circular
that
retains
its
highest
value
condition
essential
reduce
environmental
impacts,
promoting
reduction,
reuse,
recycling.
Mechanical
recycling
an
tool
environmentally
economically
sustainable
plastics,
but
mechanical
processes
are
limited
by
cost,
degradation
properties,
inconsistent
quality
products.
This
review
covers
methods
challenges
for
five
main
packaging
plastics:
poly(ethylene
terephthalate),
polyethylene,
polypropylene,
polystyrene,
poly(vinyl
chloride)
through
lens
economy.
Their
reprocessing
induced
mechanisms
introduced
strategies
improve
their
discussed.
Additionally,
this
briefly
examines
approaches
polymer
blending
mixed
waste
streams
applications
lower
recyclate.
Science,
Journal Year:
2020,
Volume and Issue:
370(6515), P. 437 - 441
Published: Oct. 22, 2020
A
new
future
for
polyethylene
Most
current
plastic
recycling
involves
chopping
up
the
waste
and
repurposing
it
in
materials
with
less
stringent
engineering
requirements
than
original
application.
Chemical
decomposition
at
molecular
level
could,
principle,
lead
to
higher-value
products.
However,
carbon-carbon
bonds
polyethylene,
most
common
plastic,
tend
resist
such
approaches
without
exposure
high-pressure
hydrogen.
F.
Zhang
et
al.
now
report
that
a
platinum/alumina
catalyst
can
transform
directly
into
long-chain
alkylbenzenes,
feedstock
detergent
manufacture,
no
need
external
hydrogen
(see
Perspective
by
Weckhuysen).
Science
,
this
issue
p.
437
;
see
also
400
Case Studies in Chemical and Environmental Engineering,
Journal Year:
2021,
Volume and Issue:
4, P. 100142 - 100142
Published: Sept. 27, 2021
The
massive
consumption
of
a
wide
range
plastic
products
has
generated
huge
amount
waste.
There
is
need
to
provide
awareness
their
uses
and
routine
management
as
part
our
lifestyle.
Nowadays,
plastics
are
increasingly
being
used
in
daily
life
activities,
including
the
packaging
different
food
brewing
companies,
cosmetics,
pharmaceutical,
other
production
sectors
pack
end
for
efficient
safer
product's
delivery
community.
Plastics
produced
through
biochemical
process
polymerization
or
polycondensation.
post-use
waste
many
adverse
impacts
on
environment
if
not
processed
managed
proper
way.
This
review
aims
discuss
lifecycle
according
categories,
polyvinyl
chloride
(PVC–U),
polystyrene
styrofoam
(PS),
polypropylene
(PP),
high-density
polyethylene
(HDPE),
terephthalate
(PETE),
others.
Herein,
we
have
also
discussed
problems
caused
by
inadequate
processing
possible
solutions
that
can
be
provided
ensure
good
atmosphere
reduce
causes
climate
changes,
which
challenging
this
planet.
Science,
Journal Year:
2021,
Volume and Issue:
373(6550), P. 66 - 69
Published: July 1, 2021
Plastics
have
revolutionized
modern
life,
but
created
a
global
waste
crisis
driven
by
our
reliance
and
demand
for
low-cost,
disposable
materials.
New
approaches
are
vital
to
address
challenges
related
plastics
heterogeneity,
along
with
the
property
reductions
induced
mechanical
recycling.
Chemical
recycling
upcycling
of
polymers
may
enable
circularity
through
separation
strategies,
chemistries
that
promote
closed-loop
inherent
macromolecular
design,
transformative
processes
shift
life-cycle
landscape.
Polymer
schemes
lower-energy
pathways
minimal
environmental
impacts
compared
traditional
chemical
The
emergence
industrial
adoption
is
encouraging,
solidifying
critical
role
these
strategies
in
addressing
fate
driving
advances
next-generation
materials
design.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2021,
Volume and Issue:
9(47), P. 15722 - 15738
Published: Nov. 12, 2021
Over
the
years,
petrochemical
industry
has
developed
a
plethora
of
polymers
that
are
contributing
to
well-being
humanity.
Irresponsible
disposal
used
plastics
has,
however,
led
buildup
litter,
which
is
fouling
environment,
harming
wildlife,
and
wasting
valuable
resources.
This
paper
critically
reviews
challenge
opportunities
in
converting
plastic
waste
into
feedstock
for
industry.
It
discusses
(a)
amount,
quality,
sorting
waste;
(b)
mechanical
recycling
extraction
or
dissolution/precipitation;
(c)
chemical
monomers
other
chemicals;
(d)
by
incineration,
biodegradation,
landfill,
microplastics.
will,
finally,
broaden
circularity
discussion
with
life-cycle
analyses
(LCA),
design
recycling,
future
role
renewable
carbon
as
feedstock.
