Environment International,
Год журнала:
2024,
Номер
187, С. 108697 - 108697
Опубликована: Апрель 24, 2024
Road
dust
is
a
demonstrated
source
of
urban
air
pollution.
Given
this,
the
implementation
street
sweeping
strategies
that
effectively
limit
road
accumulation
and
resuspension
should
be
public
health
priority.
Research
examining
effectiveness
for
removal
in
support
good
quality
has
been
limited
to
date.
To
address
study
aimed
assess
use
regenerative-air
sweeper
efficiently
remove
particles
metal(loid)s
size
fractions
relevant
respiratory
exposure
Toronto,
Canada.
As
part
mass
amounts,
particle
distribution
elemental
concentrations
bulk
before
after
at
five
arterial
sites
were
characterized.
Sweeping
reduced
total
amount
thoracic-sized
(<10
µm)
by
76
%
on
average.
A
shift
remaining
toward
finer
was
observed
post
samples,
together
with
an
enrichment
many
such
as
Co,
Ti
S.
Overall,
amounts
concern
like
Cu
Zn
greatly
sweeping.
Traffic
volume
surface
predictors
loadings
concentrations.
also
found
impact
efficiencies,
larger
per
unit
area
collected
where
surfaces
distressed.
This
demonstrates
using
advanced
technology
can
highly
effective
removal,
highlighting
its
potential
improvement
efforts.
The
importance
tailoring
service
levels
technologies
locally
traffic
patterns
emphasized.
Continued
efforts
mitigate
non-exhaust
emissions
pose
risk
their
essential.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Авг. 10, 2023
Seas
are
polluted
with
macro-
(>5
mm)
and
microplastics
(<5
mm).
However,
few
studies
account
for
both
types
when
modeling
water
quality,
thus
limiting
our
understanding
of
the
origin
(e.g.,
basins)
sources
plastics.
In
this
work,
we
model
riverine
microplastic
exports
to
seas
identify
their
main
in
over
ten
thousand
basins.
We
estimate
that
rivers
export
approximately
0.5
million
tons
plastics
per
year
worldwide.
Microplastics
dominant
almost
40%
basins
Europe,
North
America
Oceania,
because
sewage
effluents.
Approximately
80%
global
population
live
river
where
macroplastics
mismanaged
solid
waste.
These
include
many
African
Asian
rivers.
10%
basins,
(as
mass)
equally
important
high
effluents
waste
production.
Our
results
could
be
useful
prioritize
reduction
policies
Sustainability,
Год журнала:
2024,
Номер
16(2), С. 522 - 522
Опубликована: Янв. 7, 2024
Tyre
particles
are
generated
by
shear
forces
between
the
tread
and
road
or
volatilisation.
abrasion
(wear)
contributes
from
one-third
to
half
of
microplastics
unintentionally
released
into
environment.
The
major
part
ends
up
in
soil,
a
considerable
amount
is
aquatic
environment,
small
percentage
becomes
airborne.
Nevertheless,
tyre
5–30%
transport
particulate
matter
(PM)
emissions.
This
corresponds
approximately
5%
total
ambient
PM
particle
mass
size
distribution
peak
at
around
20
100
μm,
with
second
2–10
μm
range.
A
nucleation
mode
has
been
reported
some
studies.
absolute
levels
depend
on
tyre,
vehicle,
characteristics,
but
also
environmental
conditions
driving
style.
Most
emission
factors
literature
based
data
prior
year
2000.
We
aggregated
recent
studies
found
mean
110
mg/km
per
vehicle
68
mg/km/t
for
passenger
cars
(based
300
measurements).
Based
limited
number
studies,
PM10
emissions
were
1.4–2.2
tyre.
On
other
hand,
order
1010
#/km
ratio
was
be
2.5%
average.
Finally,
PM2.5
calculated
40%.
Various
mitigation
measures
pollution
could
envisaged;
most
direct
limitation
rate,
as
proposed
European
Commission
Euro
7
regulation.
Other
regulatory
initiatives
discussed.
Construction and Building Materials,
Год журнала:
2024,
Номер
418, С. 135420 - 135420
Опубликована: Фев. 16, 2024
The
increasing
volume
of
waste
rubber
generated
from
end-of-life
tyres
has
raised
significant
concerns
regarding
the
safe
and
sustainable
recycling
reuse
this
material.
A
viable
solution
is
to
incorporate
into
asphalt
mixtures,
which
contributes
promotes
sustainability
resilience
pavement
infrastructure.
In
recent
years,
Crumb
Rubber-Stone
Mastic
Asphalt
(CR-SMA)
mixtures
have
received
considerable
attention
due
their
remarkable
performance.
However,
feasibility
implementing
CR-SMA
in
field
on
a
large
scale
requires
further
investigation.
This
paper
aims
evaluate
matter
by
reviewing
mix
design
practices
CR-SMA,
assessing
performance
characteristics
identifying
gaps
potential
areas
for
improvement.
related
various
factors
like
aggregate
gradation,
compaction
technique,
processing
temperature,
CR
grains
size
concentration,
binder
content
been
identified
discussed
paper.
addition,
key
including
drain-down,
moisture
susceptibility,
permanent
deformation,
fatigue
cracking,
are
evaluated.
Journal of Cleaner Production,
Год журнала:
2023,
Номер
411, С. 137197 - 137197
Опубликована: Апрель 27, 2023
Urban
runoff
is
considered
an
important
source
of
microplastic
pollution.
This
review
provides
in-depth
analysis
studies
that
assess
the
role
sustainable
urban
drainage
systems
(SUDS)
as
nature-based
solutions,
to
tackle
this
worldwide
problem.
Sedimentation-based
systems,
such
wetlands
or
ponds,
and
filtration-based
bioretention
cells
gardens,
well
permeable
pavements
have
been
shown
effectively
retain
a
significant
number
MPs.
Nevertheless,
it
efficiencies
can
be
enhanced
through
some
design
improvements,
proposed
in
review.
Polypropylene,
Polyethylene
terephthalate,
Polystyrene,
are
most
frequent
abundant
polymers
runoff,
due
high
consumption
wide
variety
products
activities.
Smaller
particles
fibers
challenging
fraction.
Maximum
rainfall
intensity,
antecedent
dry
days,
depth,
land
use,
dwelling
density,
imperviousness,
hydraulic
loading,
SUDS
age,
presence
forebays
gross
pollutant
traps
influential
variables
on
abundance
MPs
studies,
although
not
always
statistically
significant.
The
assessment
fate
by
indicates
they
more
concentrated
sediment
filter
media
near
inlet,
shallower
layers.
existence
similar
behaviour
correlation
between
total
suspended
solids
concentration,
makes
them
potential
indicator
A
variability
detection
methods
reporting
data
format
has
found,
which
difficult
draw
global
conclusions.
Measures
reduce
pollution
areas
subjects
for
further
research
finally
suggested.
