Polymers,
Journal Year:
2022,
Volume and Issue:
14(7), P. 1296 - 1296
Published: March 23, 2022
Increasingly
prevalent
respiratory
infectious
diseases
(e.g.,
COVID-19)
have
posed
severe
threats
to
public
health.
Viruses
including
coronavirus,
influenza,
and
so
on
can
cause
infections.
A
pandemic
may
potentially
emerge
owing
the
worldwide
spread
of
virus
through
persistent
human-to-human
transmission.
However,
transmission
pathways
vary;
droplets
or
airborne
virus-carrying
particles
a
key
role
in
transmitting
infections
humans.
In
conjunction
with
social
distancing,
hand
cleanliness,
other
preventative
measures,
use
face
masks
is
considered
be
another
scientific
approach
combat
ubiquitous
coronavirus.
Different
types
are
produced
using
range
materials
polypropylene,
polyacrylonitrile,
polycarbonate,
polyurethane,
polystyrene,
polyester
polyethylene)
manufacturing
techniques
(woven,
knitted,
non-woven)
that
provide
different
levels
protection
users.
efficacy
proper
disposal/management
used
masks,
particularly
ones
made
non-biodegradable
polymers,
pose
great
environmental
concerns.
This
review
compiles
recent
advancements
covering
their
requirements,
used,
efficacy,
challenges,
risks,
sustainability
towards
further
enhancement
quality
performance
masks.
Environmental Technology & Innovation,
Journal Year:
2022,
Volume and Issue:
26, P. 102290 - 102290
Published: Jan. 11, 2022
During
the
COVID-19
pandemic,
extensive
use
of
face
masks
and
protective
personal
equipment
(PPE)
kits
has
led
to
increasing
degree
microplastic
pollution
(MP)
because
they
are
typically
discarded
into
seas,
rivers,
streets,
other
parts
environment.
Currently,
a
negative
impact
on
environment
high-level
fragmentation.
Typically,
MP
can
be
detected
by
various
techniques,
such
as
microscopic
analysis,
density
separation,
Fourier
transform
infrared
spectrometry.
However,
there
limited
studies
disposable
PPE
kits.
A
wide
range
marine
species
ingest
MPs
in
form
fibers
fragments,
which
directly
affect
human
health;
thus,
more
research
development
needed
effect
health.
This
article
provides
perspective
origin
distribution
waterbodies
(e.g.,
ponds,
lakes,
seas)
wastewater
treatment
plants,
reviews
possible
remediation
related
excessive
disposal
aquatic
environments.
Discrete Dynamics in Nature and Society,
Journal Year:
2022,
Volume and Issue:
2022(1)
Published: Jan. 1, 2022
One
of
the
most
important
aspects
supply
chain
management
(SCM)
is
recovery
network
(RN),
which
covers
all
activities
associated
with
return
products
(such
as
collection,
recovery,
repair,
recycling,
and
waste
disposal).
Our
goal
in
this
paper
to
provide
a
new
mathematical
model
sustainable
end‐of‐life
(SEOLM)
during
COVID‐19
pandemic
for
readers.
The
suggested
(RNM)
can
explain
trade‐offs
between
economic
(minimizing
total
costs),
environmental
bad
impacts),
social
impacts)
great
lockdown.
A
RN
be
designed
hygienic
design
when
taking
environmental,
economic,
considerations
into
account.
It
proposes
guidelines
managers
scholars
on
how
address
(RND)
challenges
through
article
approach.
scalarization
approach
multi‐objective
mixed‐integer
programming
(MOMIP)
problem
weighted
sum
method.
validation
presented
related
Pareto
frontier
has
been
illustrated
by
case
study
numerical
example.
To
perform
optimization
process,
Lingo
software
used.
Foundations of Computing and Decision Sciences,
Journal Year:
2022,
Volume and Issue:
47(4), P. 327 - 358
Published: Dec. 1, 2022
Abstract
This
paper
aims
to
introduce
a
framework
measure
the
sustainable
performance
of
supply
chain
(SC)
during
COVID-19
pandemic.
The
SC
stakeholders
in
this
investigation
are
Suppliers,
Production
/
Remanufacturing
Refurbishing
Centers
(Factories),
Collection
Distribution
Centers,
Recycling
Landfill
and
Customers.
suggested
(SSC)
measurement
included
three
pillars
with
23
indicators.
To
evaluate
overall
sustainability
understudy,
composite
index
has
been
developed
that
combines
all
indicators
reflect
SC.
Four
steps
involved
creating
index:1)
measuring
value
indicators,
2)
weighing
3)
Using
normalization
technique,
4)
Evaluating
SSC
indicator.
real
case
Iran
is
selected
as
an
illustrative
case.
Our
research
contributions
are:
We
novelty
indicator
better
show
economic,
environmental,
social
tradeoffs
pandemic
lockdowns.
have
found
measured
negative
positive
impacts
on
aspects
Based
achieved
data
study,
numerical
example
represented
explain
how
calculate
index.
main
contribution
development
epidemic.
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(14), P. 4755 - 4832
Published: Jan. 1, 2023
Diversification
of
polymer
waste
recycling
is
one
the
solutions
to
improve
current
environmental
scenario.
Upcycling
a
promising
strategy
for
converting
into
molecular
intermediates
and
high-value
products.
Although
catalytic
transformations
small
molecules
have
been
actively
discussed,
methods
characteristics
upcycling
new
materials
not
yet
addressed.
Recently,
functionalisation
wastes
(polyethylene
terephthalate
bottles,
polypropylene
surgical
masks,
rubber
tires,
etc.)
their
conversion
with
enhanced
functionality
proposed
as
an
appealing
alternative
dealing
recycling/treatment.
In
this
review,
term
'functional
upcycling'
introduced
designate
any
method
post-polymerisation
modification
or
surface
without
considerable
chain
destruction
produce
upcycled
material
added
value.
This
review
explores
functional
detailed
consideration
most
common
polymers,
i.e.,
polystyrene,
poly(methyl
methacrylate),
polyethylene,
polypropylene,
polyurethane,
polyethylene
terephthalate,
polyvinyl
chloride,
polycarbonate,
rubber.
We
discuss
composition
plastic
waste,
reactivity,
available
physical/chemical
agents
modification,
interconnection
between
properties
application.
To
date,
successfully
applied
adsorbents
(including
CO2),
catalysts,
electrode
energy
storage
sensing,
demonstrating
high
Importantly,
reviewed
reports
indicated
that
specific
performance
generally
comparable
higher
than
similar
prepared
from
virgin
feedstock.
All
these
advantages
promote
diversification
approach
against
postprocessing
employed
waste.
Finally,
identify
limitations
suggest
future
scope
research
each
polymer,
we
comparatively
analysed
aspects
those
chemical
mechanical
recycling,
considering
resource
costs,
toxicity
used
chemicals,
footprint,
value
product.