Environmental Science & Technology Letters,
Journal Year:
2022,
Volume and Issue:
9(7), P. 650 - 657
Published: June 17, 2022
The
extensive
production
and
use
of
polyethylene
terephthalate
(PET)
have
generated
an
enormous
amount
plastic
waste,
which
potentially
threatens
the
environment
humans.
Enzyme
biocatalysis
is
a
promising
green
chemistry
alternative,
relative
to
conventional
fossil-derived
process,
achieve
waste
treatment
recycling.
In
this
work,
we
created
biocatalyst,
BIND-PETase,
by
genetically
engineering
curli
Escherichia
coli
cell
with
functional
PETase
enzyme
for
biocatalytic
degradation
PET
plastics.
BIND-PETase
could
degrade
generate
products
at
concentration
level
greater
than
3000
μM
under
various
reaction
conditions.
effects
key
parameters,
including
pH,
temperature,
substrate
mass
load,
surfactant
addition
were
characterized.
was
reusable
remained
stable
no
significant
activity
loss
when
stored
both
4
°C
room
temperature
30
days
(Student's
t
test,
p
>
0.05).
Notably,
enable
microplastics
in
wastewater
effluent
matrix.
Moreover,
depolymerize
highly
crystalline
postconsumer
materials
ambient
conditions
efficiency
9.1%
7
days.
This
study
provides
new
horizon
developing
environmentally
friendly
approaches
solve
recycling
challenge.
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
Microorganisms,
Journal Year:
2022,
Volume and Issue:
10(6), P. 1180 - 1180
Published: June 8, 2022
Plastic
pollution
is
a
growing
environmental
problem,
in
part
due
to
the
extremely
stable
and
durable
nature
of
this
polymer.
As
recycling
does
not
provide
complete
solution,
research
has
been
focusing
on
alternative
ways
degrading
plastic.
Fungi
wide
array
enzymes
specialized
degradation
recalcitrant
substances
are
very
promising
candidates
field
plastic
degradation.
This
review
examines
present
literature
for
different
fungal
involved
degradation,
describing
their
characteristics,
efficacy
biotechnological
applications.
Fungal
laccases
peroxidases,
generally
used
by
fungi
degrade
lignin,
show
good
results
polyethylene
(PE)
polyvinyl
chloride
(PVC),
while
esterases
such
as
cutinases
lipases
were
successfully
terephthalate
(PET)
polyurethane
(PUR).
Good
also
obtained
PUR
proteases
ureases.
All
these
isolated
from
many
fungi,
both
Computational and Structural Biotechnology Journal,
Journal Year:
2022,
Volume and Issue:
20, P. 975 - 988
Published: Jan. 1, 2022
The
pollution
of
plastic
waste
has
become
an
increasingly
serious
environmental
crisis.
Recently,
been
detected
in
various
kinds
environments,
even
human
tissues,
which
is
increasing
threat
to
the
ecosystems
and
humans.
In
ocean,
eventually
fragmentized
into
microplastics
(MPs)
under
disruption
physical
chemical
processes.
MPs
are
colonized
by
microbial
communities
such
as
fungi,
diatoms,
bacteria,
form
biofilms
on
surface
called
"plastisphere".
this
review,
we
summarize
studies
related
microorganisms
plastisphere
recent
years
describe
species
plastisphere,
mainly
including
autotrophs.
Secondly,
explore
interactions
between
plastisphere.
depth
ocean
nutrients
surrounding
seawater
can
have
a
great
impact
community
structure
Finally,
discuss
types
MP-degrading
bacteria
use
"seed
bank"
theory
speculate
potential
sources
microorganisms.
Challenges
future
research
prospects
also
discussed.
ACS Catalysis,
Journal Year:
2022,
Volume and Issue:
12(15), P. 9307 - 9324
Published: July 18, 2022
Plastic
waste
triggers
a
series
of
concerns
because
its
disruptive
impact
on
the
environment
and
ecosystem.
From
point
view
catalysis,
however,
end-of-life
plastics
can
be
seen
as
an
untapped
feedstock
for
preparation
value-added
products.
Thus,
development
diversified
catalytic
approaches
valorization
is
urgent.
Previous
reviews
this
field
have
systematically
summarized
progress
made
plastic
reclamation.
In
review,
we
emphasize
design
processes
by
leveraging
state-of-the-art
technologies
from
other
developed
fields
to
derive
valuable
polymers,
functional
materials,
chemicals
plastics.
The
principles,
mechanisms,
opportunities
chemical
(thermo-,
electro-,
photocatalytic)
well
biocatalytic
ones
are
discussed,
which
may
provide
more
insights
future
processes.
Finally,
outlooks
perspectives
accelerate
toward
feasible
economy
discussed.