Sustainability & Circularity NOW,
Год журнала:
2024,
Номер
01(CP)
Опубликована: Ноя. 22, 2024
Abstract
The
main
aims
of
zero-waste
goals
are
the
promotion
sustainable
production
and
consumption
through
societal
move
toward
circular
approaches.
chemical
industry
includes
a
variety
processes
to
produce
various
useful
consumables,
but
many
these
have
serious
negative
environmental,
health,
safety
impacts
at
every
level
their
design,
production,
processing,
uses.
Circularity
is
core
eco-design
technology
in
which
waste
repurposed
environmental
reduced
via
3Rs
concepts:
reduce,
reuse,
recycle.
integration
approaches
with
chemistry
makes
it
(CC).
This
article
provides
brief
literature
review
on
CC
why
important
tackle
sustainability-related
issues.
Here
we
conduct
structured
opinion
as
well
evidence-based
explore
role
make
more
sustainable.
Fundamental
aspects
its
economy
been
discussed,
concluded
that
design
clean
processes,
recovery,
reuse
wastes,
reintroducing
recovered
materials
back
industrial
chain
possible
scalable.
aligns
7
UN’s
Sustainable
Development
Goals,
is,
3,
6,
9,
12,
13,
14,
15.
Waste Management & Research The Journal for a Sustainable Circular Economy,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 18, 2025
In
this
systematic
review,
advancements
in
plastic
recycling
technologies,
including
mechanical,
thermolysis,
chemical
and
biological
methods,
are
examined.
Comparisons
among
technologies
have
identified
current
research
trends,
a
focus
on
pretreatment
for
waste
materials
the
development
of
new
organic
chemistry
or
techniques
that
enable
with
minimal
energy
consumption.
Existing
environmental
economic
studies
also
compared.
The
findings
highlight
differences
characteristics
various
their
ability
to
recover
resins,
carbon
footprint,
electricity
consumption
gas
emissions.
comparisons
reveal
challenges
associated
these
methods:
mechanical
often
encounters
barriers
due
contamination
inefficiencies
sorting
cleaning
processes;
thermolysis
is
constrained
by
high
demands
operational
costs,
whereas
faces
limitations
related
scalability
material
costs.
Additionally,
challenges,
emerging
areas
future
directions
discussed.
For
example,
role
innovative
techniques,
such
as
artificial
intelligence,
refining
processes
emphasized.
importance
incorporating
circular
economy
principles
integrated
sustainable
analysis
highlighted.
contribution
review
address
both
technological
developments
implications.
placed
literature
from
past
10
years
ensure
coverage
most
recent
advancements.
Overall,
insights
article
aim
guide
researchers,
policymakers
industry
stakeholders
improving
management
practices
waste.
Emerging
technologies-empowered
thermochemical
plastic
valorization
is
developed
for
value-added
products
in
green
and
practical
manner,
which
are
beneficial
to
achieving
circular
economy
several
UN
sustainable
development
goals.
ACS Central Science,
Год журнала:
2024,
Номер
10(9), С. 1755 - 1764
Опубликована: Авг. 21, 2024
Catalytic
deconstruction
has
emerged
as
a
promising
solution
to
valorize
polyethylene
(PE)
waste
into
valuable
products,
such
oils,
fuels,
surfactants,
and
lubricants.
Unfortunately,
commercialization
been
hampered
by
inadequate
optimization
of
PE
due
an
inability
either
truly
characterize
the
polymer
transformations
or
adjust
catalytic
conditions
match
ever-evolving
product
distribution
associated
property
changes.
To
address
these
challenges,
detailed
analysis
molar
mass
distributions
thermal
characterization
was
developed
herein
applied
low-density
(LDPE)
enable
more
thorough
identification
chain
characteristics
within
solids
(e.g.,
changes
in
branching
structure).
For
example,
LDPE
hydrocracking
exhibited
comparable
rates
isomerization
C–C
bond
scission,
generated
possessed
broadened
with
disappearance
significant
fraction
highly
linear
segments,
indicating
polymer-structure-dependent
interactions
catalyst.
Solids
from
pyrolysis
yielded
starkly
different
results,
resulting
were
devoid
unreacted
chains
had
narrowed
even
at
short
times
0.2
h).
By
tracking
polymeric
behavior
function
reaction
type,
time,
catalyst
design,
we
mapped
critical
pathways
toward
valorization.
Nature Chemical Engineering,
Год журнала:
2024,
Номер
1(10), С. 615 - 626
Опубликована: Окт. 10, 2024
A
circular
plastics
economy
can
leverage
the
lightweight,
strong
and
durable
characteristics
of
macromolecular
materials,
while
simultaneously
reducing
negative
environmental
impacts
associated
with
polymer
waste.
Advanced
recycling
technologies
provide
an
opportunity
to
valorize
waste
extend
lifespan
these
materials
by
converting
into
new
monomers,
polymers
or
specialty
chemicals.
Although
many
advanced
appear
promising,
assessments
economic
sustainability
are
often
not
conducted
in
a
standardized
fashion
neglect
factors
such
as
transportation,
sorting
pretreatment.
These
shortcomings
lead
inaccurate
misleading
predictions,
reduce
opportunities
for
optimization
limit
industrial
relevance.
In
this
Review,
we
highlight
select
case
studies
underscore
notable
consequences
underestimating
complexity
real-life
consumer
addition,
current
challenges
assessment
viability
laboratory-scale
processes
explored.
By
discussing
relevant
analysis
frameworks
system
boundaries,
along
potential
analytical
pitfalls,
future
research
will
be
guided
beyond
chemical
considerations
toward
impactful
solutions.
is
end-of-life
option
generation
high-value
products.
This
Review
highlights
importance
developing
holistic
analyses
candidate
technologies,
focus
on
key
parameters,
complexities
infrastructure,
scale-up
considerations,
trade-offs.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(18), С. 9929 - 9929
Опубликована: Сен. 14, 2024
Over
the
last
ten
years,
researchers’
efforts
have
aimed
to
replace
classic
linear
economy
model
with
circular
model,
favoring
green
chemical
and
industrial
processes.
From
this
point
of
view,
biologically
active
molecules,
coming
from
plants,
flowers
biomass,
are
gaining
considerable
value.
In
study,
firstly
we
focus
on
development
a
protocol
obtain
purification
anthocyanins
flower
Callistemon
citrinus,
based
simulation
response
surface
optimization
methodology.
After
that,
utilize
them
manufacture
add
new
properties
bioplastics
belonging
class
3,
modified
polyvinyl
alcohol
(PVA)
increasing
amounts
0.10
1.00%.
The
polymers
analyzed
monitor
morphological
changes,
optical
properties,
mechanical
antioxidant
antimicrobial
activities.
Fourier
transform
infrared
spectroscopy
(FTIR)
spectra
materials
show
characteristic
bands
PVA
alone
modification
band
at
around
1138
cm−1
1083
cm−1,
showing
an
influence
anthocyanins’
addition
sequence
crystalline
amorphous
structures
starting
materials,
as
also
shown
by
results
tests.
These
showed
increase
in
thickening
(from
29.92
μm
approx.
37
μm)
hydrophobicity
concomitant
added
(change
wettability
water
14°
31°),
decreasing
poor
water/moisture
resistance
that
decreases
its
strength
limits
application
food
packaging,
which
makes
ideal
candidates
for
biodegradable
packaging
extend
shelf-life
food.
functionalization
determines
opacity,
2.46
3.42
T%/mm,
acquisition
activity
against
2,2-diphenyl-1-picrylhdrazyl
2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic
acid)
radicals
and,
ferric
reducing
power
assay,
(bactericidal)
different
Staphylococcus
aureus
strains
maximum
tested
concentration
(1.00%
anthocyanins).
On
whole,
making
it
suitable
purposes,
highlighted
fresh-keeping
test.
Sustainability,
Год журнала:
2024,
Номер
16(19), С. 8331 - 8331
Опубликована: Сен. 25, 2024
Polyvinyl
chloride
(PVC)
resins
are
widely
used
in
modern
society
due
to
their
acid
and
alkali
resistance,
low
cost,
strong
insulation
properties.
However,
the
high
chlorine
(Cl)
content
PVC
poses
significant
challenges
for
its
recycling.
This
study
reviews
treatment
processes,
model
construction,
economic
environmental
assessments
construct
a
methodological
framework
sustainable
development
of
emerging
dechlorination
technologies.
In
terms
this
summarizes
three
types
pretreatment,
simultaneous
during
chemical
recycling,
product
purification,
emphasizes
necessity
from
systematic
perspective.
Additionally,
construction
models
processes
is
investigated
laboratory
industrial
production
system
macro-scale
material,
order
evaluate
potential
inventory
data
material
metabolism
behaviors.
review
also
summarized
methodology
Techno-Economic
Analysis
(TEA)
Life
Cycle
Assessment
(LCA),
which
can
be
applied
evaluation
performance
processes.
Overall,
provides
readers
with
comprehensive
perspective
on
state-of-the-art
technologies,
meanwhile
offering
guidance
future
research
applications
recycling
waste.
