Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
480, P. 136349 - 136349
Published: Oct. 30, 2024
Pelletizing
mixed
plastic
wastes
(MPW)
has
gained
interest
as
an
upcycling
technology
and
alternative
to
conventional
recycling.
To
investigate
its
potential,
we
conducted
a
cost
analysis
life-cycle
assessment
(LCA)
for
conceptual
pelletization
facility
designed
produce
1
kg
of
pellets
per
batch
MPW
(comprising
polyethylene-PE
polypropylene-PP).
This
work
the
following
merits:
(i)
evaluating
environmental
impact
(EI),
analysis,
mechanical
strength
based
on
actual
experimental
data
comparison
with
local
international
manufacturers;
(ii)
enabling
evaluation
LCA
impacts
pellets;
(iii)
emphasizing
significance
waste
management
in
reducing
EIs.
The
ten
EIs
were
assessed:
climate
change
(CC),
net
energy,
particulate
matter
formation,
natural
land
transformation,
metal
depletion,
marine
ecotoxicity,
ionising
radiation,
freshwater
eutrophication,
terrestrial
ecotoxicity.
CC
as-synthesized
is
1.26
CO
Chemical Engineering Journal,
Journal Year:
2024,
Volume and Issue:
486, P. 150230 - 150230
Published: March 12, 2024
Polyolefin
waste
is
among
the
most
generated
yet
least
recycled.
Despite
its
potential
as
a
feedstock
of
superhydrophobic
membranes
for
organic
solvent
filtration,
it
remains
challenge
to
achieve
high
selectivity
and
permeability
viscous
oils.
In
this
study,
we
valorized
polyolefin
into
trimodal
water
filtration
through
acid-catalyzed
oxidation
void
inducer.
This
approach
enabled
creation
with
exceptional
wettability
strength,
characterized
by
combination
micropores,
macrovoids
(30–70
µm),
cavities
(150–200
µm).
The
introduced
oxygen
moieties
membrane
structure,
resulting
in
reduced
contact
angle,
improved
hydrophilicity,
increased
permeability.
micropores
facilitated
capillary
action,
efficient
passage,
acted
oil
reservoirs,
optimal
oil–water
separation.
Various
were
synthesized
using
low-density
high-density
polyethylene
(PE),
polypropylene
(PP),
their
blend.
obtained
results
compared
commercial
membranes,
revealing
flow
rate
43
ml/min,
retention
capacity
261
mg,
an
removal
efficiency
ranging
from
84–94
%.
Furthermore,
exhibited
recyclability,
demonstrating
stability
over
at
10
cycles.
hybrid
process
transforms
plastic
achieving
balance
between
superoleophilicity
hydrophilicity.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(31), P. 41421 - 41434
Published: July 12, 2024
Corrosion
protection
technology
plays
a
crucial
role
in
preserving
infrastructure,
ensuring
safety
and
reliability,
promoting
long-term
sustainability.
In
this
study,
we
combined
experiments
various
analyses
to
investigate
the
mechanism
of
corrosion
occurring
on
epoxy-based
anticorrosive
coating
containing
additive
two-dimensional
(2D)
water-stable
zirconium-based
metal-organic
frameworks
(Zr-MOFs).
By
using
benzoic
acid
as
modulator
for
growth
MOF,
2D
MOF
constructed
from
hexazirconium
clusters
BTB
linkers
(BTB
=
1,3,5-tri(4-carboxyphenyl)benzene)
with
coordinated
benzoate
(BA-ZrBTB)
can
be
synthesized.
BA-ZrBTB/epoxy
composite
film
(BA-ZrBTB/EP)
surface
cold-rolled
steel
(CRS),
found
lowest
roughness
(RMS)
BA-ZrBTB/EP
is
2.83
nm
highest
water
contact
angle
99.8°,
which
represents
hydrophobic
surface.
Notably,
rate
2.28
×
10-3
mpy,
4
orders
magnitude
lower
than
that
CRS
substrate.
Moreover,
energy
barrier
oxygen
diffusion
through
larger
epoxy
(EP),
indicating
improved
resistance
adding
Zr-MOFs
additive.
These
results
underscore
high
efficiency
potential
BA-ZrBTB
highly
promising
agent
prevention
commercial
applications.
Furthermore,
study
first
instance
applying
Zr-MOF
materials
anticorrosion
applications,
opening
up
new
possibilities
advanced
corrosion-resistant
coatings.
BIO Web of Conferences,
Journal Year:
2025,
Volume and Issue:
171, P. 02002 - 02002
Published: Jan. 1, 2025
The
increasing
accumulation
of
oil
palm
empty
fruit
bunches
(EFB)
and
polypropylene
(PP)
waste
necessitates
sustainable
management
solutions.
This
study
investigates
the
co-pyrolysis
EFB
PP
in
a
fixed-bed
reactor
at
temperatures
ranging
from
400
to
600
°C,
utilizing
blending
ratios
100:0,
75:25,
50:50,
25:75,
0:100.
results
revealed
notable
synergistic
effects,
particularly
75:25
EFB:PP
ratio,
which
yielded
50.35%
bio-oil,
highest
gas
yield
(28.95%),
reduced
biochar
formation
compared
pure
EFB.
bio-oil
composition
showed
increased
aliphatic
compounds
oxygenated
compounds,
making
intermediate
such
as
ideal
for
balancing
hydrocarbons
oxygenates.
char
derived
maintained
adequate
porosity
applications
adsorption,
catalysis,
energy
storage.
Gaseous
products
CO
2
,
methane,
ethylene
demonstrate
high
potential,
underlining
suitability
industrial
applications.
These
findings
confirm
that
is
an
efficient
waste-to-resource
strategy,
optimizing
char,
quality
while
addressing
both
biomass
plastic
challenges.
High-density
polyethylene
(HDPE)
waste
poses
a
significant
environmental
challenge
due
to
its
non-biodegradable
nature
and
the
vast
quantities
generated
annually.
However,
conventional
recycling
methods
are
energy-intensive
often
yield
low-quality
products.
Herein,
HDPE
is
upcycled
into
anti-aging
superhydrophobic
thin
films
suitable
for
outdoor
applications.
A
two-layer
spin-casting
method
combined
with
heating-induced
crosslinking
utilized
produce
an
exceptionally
rough
surface,
featuring
root
mean
square
(RMS)
roughness
of
50
nm,
average
crest
height
222
trough
depth
–264
contact
angle
(CA)
148°.
To
assess
durability,
weathering
tests
were
conducted,
revealing
films'
susceptibility
degradation
under
harsh
conditions.
The
resistance
factors
improved
by
incorporating
UV
absorber,
maintaining
their
hydrophobic
properties
mechanical
strength.
Our
research
demonstrates
sustainable
upcycling
high-performance,
weather-resistant
films.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(11), P. 1537 - 1537
Published: May 29, 2024
This
study
examines
the
impact
of
cutting
regimes
on
determining
resistance
in
processing
polypropylene
(PP)
using
CNC
lathe
EMCO
F5.
The
rationale
for
this
research
stems
from
polypropylene’s
rarity
among
thermoplastics
possessing
structural
stability,
allowing
its
comparison
to
metals
and
practical
application
products
replacing
metal
parts.
Leveraging
favorable
mechanical
properties,
finds
utility
producing
parts
subject
dynamic
loads,
boasting
high
loads—particularly
undesirable
machining.
An
advantageous
characteristic
is
affordability,
rendering
it
an
economical
choice
across
numerous
applications.
Despite
these
merits,
exploration
remains
limited,
underscoring
novelty
endeavor.
main
method
involves
measuring
electric
current
strength
during
processing.
direct
measurement,
facilitated
by
input
regime
parameters,
recorded
PLC
controller,
with
value
extracted
machine
tool’s
ammeter.
experimental
approach
entails
varying
parameters—cutting
speed
(v),
feed
rate
(s),
depth
cut
(a)—across
minimum
maximum
values,
recognized
as
pivotal
factors
influencing
force
development
attainment
desired
machined
surface
quality.
