Green Carbon,
Год журнала:
2024,
Номер
2(1), С. 1 - 11
Опубликована: Фев. 2, 2024
Plastics
are
integral
to
numerous
significant
social
advancements.
Nonetheless,
their
contribution
environmental
pollution
and
climate
crises
cannot
be
disregarded,
as
negative
impact
on
the
environment
increases
with
incremental
production
capacity
demand.
Concerted
global
action
is
urgently
required
promote
green
recycle
of
plastics
prevent
accumulation
in
mitigate
carbon
emissions.
This
review
aims
reveal
paths
development
for
polyester
plastics,
incorporating
trends
revolution
mature
commercial
newly
emerging
biodegradable
future
plastics.
A
critical
discussion
was
conducted
current
potential
research
areas
from
multiple
perspectives,
including
raw
materials,
processes,
recycling,
propel
us
into
a
marked
by
sustainability.
Journal of environmental chemical engineering,
Год журнала:
2023,
Номер
11(3), С. 109823 - 109823
Опубликована: Апрель 1, 2023
The
high
demand
for
recycled
polyethylene
terephthalate
(rPET)
driven
by
an
increase
in
environmental
awareness,
the
application
of
more
restrictive
legislations,
together
with
large
generation
post-consumer
PET
plastic
waste,
has
resulted
urgent
need
efficient
recycling
processes.
In
this
work,
alkaline
hydrolysis
is
presented
as
a
promising
chemical
alternative
tray
waste.
depolymerization
reactions
were
carried
out
under
mild
conditions
(80–100
ºC
and
atmospheric
pressure)
using
tributylhexadecylphosphonium
bromide
quaternary
salt
(TBHDPB)
catalyst.
Several
operating
variables
studied
based
on
conversion
terephthalic
acid
(TPA)
yield
criteria:
(i)
catalyst
mass
ratio
TBHDPB
to
(0–0.2);
(ii)
particle
size
(0.5–10
mm);
(iii)
stirring
rate
(350–700
rpm);
and,
(iv)
temperature
°C).
A
good
compromise
between
(99.9%)
TPA
(93.5%)
was
established
after
4
h
reaction,
following
conditions:
TBHDPB:PET
ratio,
0.2;
100
°C;
size,
1–1.4
mm;
rate,
525
rpm.
addition,
experimental
kinetic
data
correctly
fits
proposed
shrinking
core
model.
Activation
energy
values
60
57.4
kJ
mol-1
non-catalyzed
catalyzed
reactions,
respectively,
which
implies
that
does
not
apparently
modify
reaction
mechanism.
Journal of environmental chemical engineering,
Год журнала:
2024,
Номер
12(3), С. 112507 - 112507
Опубликована: Март 15, 2024
Plastic
waste
management,
particularly
addressing
the
challenges
of
Polyethylene
terephthalate
(PET)
waste,
has
become
increasingly
urgent
in
face
escalating
environmental
concerns.
This
paper
critically
examines
glycolysis-based
PET
recycling,
focusing
on
its
potential
as
a
promising
solution.
Despite
lightweight
properties
and
cost-effectiveness
advantages,
poses
multifaceted
challenges,
including
contaminant
removal,
scale-up
hurdles,
economic
viability.
Catalyst
optimization
maintaining
end-product
quality
are
crucial
for
enhancing
recycling
efficiency
market
acceptance.
Moreover,
this
review
underscores
importance
impact
assessments
regulatory
compliance
guiding
sustainable
management
practices.
To
overcome
infrastructure
limitations
foster
global
collaboration,
concerted
efforts
needed
to
educate
consumers
facilitate
international
cooperation.
By
these
holds
promise
mitigating
plastic
pollution
promoting
circular
economy.
The
highlights
recent
advancements
applications
resultant
product,
Bis
HydroxyEthl
Terephthalate
(BHET).
Macromolecular Rapid Communications,
Год журнала:
2023,
Номер
44(5)
Опубликована: Янв. 17, 2023
Biodegradation
of
polymers
in
composting
conditions
is
an
alternative
end-of-life
(EoL)
scenario
for
contaminated
materials
collected
through
the
municipal
solid
waste
management
system,
mainly
when
mechanical
or
chemical
methods
cannot
be
used
to
recycle
them.
Compostability
certification
requirements
are
time-consuming
and
expensive.
Therefore,
approaches
accelerate
biodegradation
these
simulated
can
facilitate
speed
up
evaluation
selection
potential
compostable
polymer
alternatives
inform
faster
biodegrade
real
composting.
This
review
highlights
recent
trends,
challenges,
future
strategies
by
modifying
properties/structure
compost
environment.
Both
abiotic
biotic
show
accelerating
biodegradable
polymers.
Abiotic
methods,
such
as
incorporation
additives,
reduction
molecular
weight,
size
reactive
blending,
potentially
most
straightforward,
providing
a
level
technology
that
allows
easy
adoption
adaptability.
Novel
including
concept
self-immolative
triggering
scission
chains
specific
conditions,
increasingly
sought.
In
terms
dispersion/encapsulation
enzymes
during
processing
step,
biostimulation
environment,
bioaugmentation
with
microbial
strains
process
promising
biodegradation.
Green Carbon,
Год журнала:
2024,
Номер
2(1), С. 1 - 11
Опубликована: Фев. 2, 2024
Plastics
are
integral
to
numerous
significant
social
advancements.
Nonetheless,
their
contribution
environmental
pollution
and
climate
crises
cannot
be
disregarded,
as
negative
impact
on
the
environment
increases
with
incremental
production
capacity
demand.
Concerted
global
action
is
urgently
required
promote
green
recycle
of
plastics
prevent
accumulation
in
mitigate
carbon
emissions.
This
review
aims
reveal
paths
development
for
polyester
plastics,
incorporating
trends
revolution
mature
commercial
newly
emerging
biodegradable
future
plastics.
A
critical
discussion
was
conducted
current
potential
research
areas
from
multiple
perspectives,
including
raw
materials,
processes,
recycling,
propel
us
into
a
marked
by
sustainability.
