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
Science Advances,
Journal Year:
2020,
Volume and Issue:
6(47)
Published: Nov. 20, 2020
Many
plastic
packaging
materials
manufactured
today
are
composites
made
of
distinct
polymer
layers
(i.e.,
multilayer
films).
Billions
pounds
these
films
produced
annually,
but
manufacturing
inefficiencies
result
in
large,
corresponding
postindustrial
waste
streams.
Although
relatively
clean
(as
opposed
to
municipal
wastes)
and
near-constant
composition,
no
commercially
practiced
technologies
exist
fully
deconstruct
film
wastes
into
pure,
recyclable
polymers.
Here,
we
demonstrate
a
unique
strategy
call
solvent-targeted
recovery
precipitation
(STRAP)
their
constituent
resins
using
series
solvent
washes
that
guided
by
thermodynamic
calculations
solubility.
We
show
the
STRAP
process
is
able
separate
three
representative
polymers
(polyethylene,
ethylene
vinyl
alcohol,
polyethylene
terephthalate)
from
available
with
nearly
100%
material
efficiency,
affording
cost-competitive
virgin
materials.
Angewandte Chemie International Edition,
Journal Year:
2020,
Volume and Issue:
60(10), P. 5527 - 5535
Published: Dec. 3, 2020
Abstract
The
upgrading
of
plastic
waste
is
one
the
grand
challenges
for
21
st
century
owing
to
its
disruptive
impact
on
environment.
Here,
we
show
first
example
various
aromatic
wastes
with
C−O
and/or
C−C
linkages
arenes
(75–85
%
yield)
via
catalytic
hydrogenolysis
over
a
Ru/Nb
2
O
5
catalyst.
This
catalyst
not
only
allows
selective
conversion
single‐component
plastic,
and
more
importantly,
enables
simultaneous
mixture
arenes.
excellent
performance
attributed
unique
features
including:
(1)
small
sized
Ru
clusters
Nb
,
which
prevent
adsorption
ring
hydrogenation;
(2)
strong
oxygen
affinity
NbO
x
species
bond
activation
Brønsted
acid
sites
activation.
study
offers
path
integrate
back
into
supply
chain
production
under
context
circular
economy.
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
