Polymers,
Год журнала:
2024,
Номер
16(8), С. 1151 - 1151
Опубликована: Апрель 19, 2024
This
study
aimed
to
investigate
the
sustainable
use
of
recycled
plastics,
specifically
polypropylene
(PP)
and
high-density
polyethylene
(HDPE),
in
manufacture
geogrids
for
geotechnical
civil
engineering
applications.
Plastics
were
collected
from
a
recycling
center,
targeting
containers
used
food,
cleaning
products,
other
domestic
packaging
items.
These
plastics
sorted
according
Möbius
triangle
classification
system,
with
HDPE
(#2)
PP
(#5)
being
primary
categories
interest.
The
research
methodologically
evaluates
mechanical
properties
PP/HDPE
(0/100,
25/75,
50/50,
75/25
100/0%
w/w)
composites
through
tensile
flexural
tests,
exploring
various
compositions
configurations
geogrids.
results
highlight
superiority
pure
processed
into
1.3
mm
thick
laminated
yarns
hot
air
welded
20
30
s,
exhibiting
deformation
exceeding
60%
comparison
composites.
Through
SolidWorks®
Simulation,
it
was
shown
that
adoption
trigonal
geogrid
geometry
optimizes
force
distribution
strength,
significantly
improving
slope
stabilization
efficiency.
Based
on
obtained,
laboratory-scale
prototype
developed
using
an
extrusion
process.
underscore
importance
careful
composite
design
yarn
configuration
selection
achieve
desired
performance
It
emphasizes
potential
as
viable
environmentally
friendly
solution
stabilizing
slopes,
contributing
reduction
plastic
waste
promoting
construction
practices.
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).
Green Chemistry,
Год журнала:
2024,
Номер
26(12), С. 6857 - 6885
Опубликована: Янв. 1, 2024
Amongst
all
synthetic
polymers
used
in
the
clothing
industry,
polyethylene
terephthalate
(PET)
is
most
widely
polyester,
its
fibres
representing
half
total
PET
global
market
(in
comparison
bottle
being
less
than
a
third).
Molecules,
Год журнала:
2025,
Номер
30(3), С. 493 - 493
Опубликована: Янв. 23, 2025
Efficient
chemical
synthesis
is
critical
for
the
production
of
organic
chemicals,
particularly
in
pharmaceutical
industry.
Leveraging
machine
learning
to
predict
and
improve
development
efficiency
has
become
a
significant
research
focus
modern
chemistry.
Among
various
models,
Transformer,
leading
model
natural
language
processing,
revolutionized
numerous
fields
due
its
powerful
feature-extraction
representation-learning
capabilities.
Recent
applications
demonstrated
that
Transformer
models
can
also
significantly
enhance
performance
tasks,
reaction
prediction
retrosynthetic
planning.
This
article
provides
comprehensive
review
innovations
qualitative
tasks
synthesis,
with
on
technical
approaches,
advantages,
challenges
associated
applying
architecture
reactions.
Furthermore,
we
discuss
future
directions
improving
synthesis.
To
promote
the
chemical
recycling
of
polyethylene
terephthalate
(PET),
its
valorization
by
hydrocracking
was
investigated.
ease
implementation
at
large-scale
this
route,
PET
coprocessed
with
vacuum
gasoil
(VGO),
which
is
a
benchmark
feed
industrial
unit
(10
and
90
wt
%,
respectively)
hydrocracked
using
PtPd/HY
catalyst.
Furthermore,
suitability
PETs
different
natures
origins
to
produce
fuel-assimilable
streams
assessed.
Specifically,
one
virgin,
commercial,
mechanically
recycled
were
used,
analyzing
differences
in
conversion,
yields
product
fractions
(dry
gas,
liquefied
petroleum
gases,
naphtha,
light
cycle
oil),
composition
naphtha
oil
fractions,
given
their
possible
interest
being
used
formulation
automotive
fuels.
The
reaction
runs
performed
batch
reactor
under
following
conditions:
80
bar,
420
°C,
120
min,
catalyst/feed
mass
ratio
10
gcatalyst
gfeed–1.
modified
degraded
plastics
more
easily
converted
into
liquid
hydrocarbons
within
LCO
contents
isoparaffins
between
45
50
%.
From
products,
pathways
PET-derived
molecules
evaluated.
