The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
913, P. 169436 - 169436
Published: Dec. 29, 2023
Due
to
the
'forever'
degrading
nature
of
plastic
waste,
waste
management
is
often
complicated.
The
applications
are
ubiquitous
and
inevitable
in
many
scenarios.
Current
global
plastics
production
ca.
3.5
MMT
per
year,
with
current
trend,
will
reach
25,000
by
2040.
However,
rapid
growth
manufacture
material's
inherent
resulted
accumulation
a
vast
amount
garbage.
recycling
rate
<10
%,
while
large
volumes
discarded
cause
environmental
ecological
problems.
Recycling
rates
for
vary
widely
region
type
plastic.
In
some
developed
countries,
around
20-30
developing
nations,
it
much
lower.
These
statistics
highlight
magnitude
problem
urgent
need
comprehensive
strategies
manage
more
effectively
reduce
its
impact
on
environment.
This
review
critically
analyses
past
studies
essential
efficient
techniques
turning
trash
into
treasure.
Additionally,
an
attempt
has
been
made
provide
understanding
upcycling
process,
3Rs
policy,
life-cycle
assessment
(LCA)
conversion.
advocates
pyrolysis
as
one
most
promising
methods
valuable
chemicals.
addition,
can
be
severely
impacted
due
uncontrollable
events,
such
Covid
19
pandemic.
chemical
certainly
bring
value
end-of-life
LCA
analysis
indicated
there
still
huge
scope
innovation
area
compared
mechanical
recycling.
formulation
policies
heightened
public
participation
could
play
pivotal
role
reducing
repercussions
facilitating
shift
towards
sustainable
future.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(5), P. 628 - 628
Published: Feb. 26, 2025
The
growing
environmental
impact
of
textile
waste,
fueled
by
the
rapid
rise
in
global
fiber
production,
underscores
urgent
need
for
sustainable
end-of-life
solutions.
This
review
explores
cutting-edge
pathways
waste
management,
spotlighting
innovations
that
reduce
reliance
on
incineration
and
landfilling
while
driving
material
circularity.
It
highlights
advancements
collection,
sorting,
pretreatment
technologies,
as
well
both
established
emerging
recycling
methods.
Smart
collection
systems
utilizing
tags
sensors
show
great
promise
streamlining
logistics
automating
pick-up
routes
transactions.
For
automated
technologies
like
near-infrared
hyperspectral
imaging
lead
way
accurate
scalable
separation.
Automated
disassembly
techniques
are
effective
at
removing
problematic
elements,
though
other
pretreatments,
such
color
finish
removal,
still
to
be
customized
specific
streams.
Mechanical
is
ideal
textiles
with
strong
mechanical
properties
but
has
limitations,
particularly
blended
fabrics,
cannot
repeated
endlessly.
Polymer
recycling-through
melting
or
dissolving
polymers-produces
higher-quality
recycled
materials
comes
high
energy
solvent
demands.
Chemical
recycling,
especially
solvolysis
pyrolysis,
excels
breaking
down
synthetic
polymers
polyester,
potential
yield
virgin-quality
monomers.
Meanwhile,
biological
methods,
their
infancy,
natural
fibers
cotton
wool.
When
methods
not
viable,
gasification
can
used
convert
into
synthesis
gas.
concludes
future
hinges
integrating
sorting
advancing
solvent-based
chemical
technologies.
These
innovations,
supported
eco-design
principles,
progressive
policies,
industry
collaboration,
essential
building
a
resilient,
circular
economy.
Catalytic
upcycling,
a
process
for
the
valorization
of
plastic
waste
toward
value-added
products,
has
garnered
attention
as
promising
approach
to
management.
This
study
investigated
aromatic
product
distribution
from
thermal
and
catalytic
fast
pyrolysis
PET
using
Py-GC-MS/FID.
Thermal
(550–800
°C)
revealed
that
acetophenone
increases
sharply
with
rising
temperatures,
becoming
dominant
at
800
°C.
was
conducted
three
zeolites
(HZSM-5,
HBeta,
HY).
HBeta
yielded
highest
benzene,
while
HZSM-5
exhibited
total
yields
toluene,
ethylbenzene,
xylene,
styrene,
naphthalene.
HY
significantly
promoted
production
acetophenone,
new
finding
further
by
vinyl
benzoate
ethylene
dibenzoate
model
compounds.
A
formation
route
proposed,
involving
homolysis
Calkyl–O
bond
in
PET,
rearrangement,
decarbonylation.
Further,
effects
various
reaction
conditions,
including
catalyst/feedstock
ratios,
SiO2/Al2O3
mode
operation
(in
situ
vs
ex
situ),
on
selectivity
products
were
systematically
explored.
The
findings
this
work
contribute
application
technology
upcycling
oxygen-containing
organic
solid
waste.
