Water Research,
Journal Year:
2024,
Volume and Issue:
273, P. 122947 - 122947
Published: Dec. 18, 2024
In
recent
years,
it
has
become
clear
that
plastic
pollution
poses
a
significant
threat
to
aquatic
environments
and
human
health.
Rivers
act
as
entry
points
for
land-based
waste,
while
certain
fraction
of
entrained
plastics
is
carried
into
marine
environments.
As
such,
the
accurate
modelling
transport
processes
in
riverine
systems
plays
crucial
role
developing
adequate
remediation
strategies.
this
paper,
we
review
two
main
multiphase
flow
numerical
approaches
used
modelling,
comprising
Lagrangian
Transport
Models
(LTMs)
Eulerian
(ETMs).
Although
LTMs
ETMs
can
be
regarded
complementary
equivalent
approaches,
focus
on
trajectories
individual
particles,
whereas
represent
behaviour
particles
terms
their
mass
or
volume
concentrations.
Similar
results
are
expected,
our
shows
models
yet
improved,
specifically
with
respect
formulation
implementation
boundary
conditions,
interactions
channel
bed,
river
bank,
free
surface,
well
biota.
We
anticipate
an
these
conditions
will
allow
better
representation
different
modes,
including
bed
load,
suspended
surface
load.
Finally,
provide
suggestions
future
research
directions,
novel
threshold
detachment
plastics,
hope
inspire
community,
thereby
triggering
new
developments
rapidly
advancing
field
modelling.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
927, P. 171568 - 171568
Published: March 16, 2024
Despite
their
catastrophic
implications
in
flood
events,
the
mobilization
and
transport
of
large,
loose
objects
–
termed
Urban
Flood
Drifters
(UFDs)–
are
often
overlooked
management.
These
inherent
to
anthropogenic
activities,
but
not
designed
remain
stable
under
flooding
conditions,
nor
usually
considered
risk
studies.
This
oversight
stems
from
our
limited
understanding
how
flowing
water
interacts
with
these
heterogeneous
objects.
To
bridge
this
knowledge
gap,
we
introduce
a
mechanistic
stability
model
that
predicts
onset
UFD
across
diverse
array
objects,
plastics
heavy
vehicles.
We
further
enhance
reliability
by
incorporating
Monte
Carlo-based
probabilistic
framework
accounts
for
uncertainties
interdependencies
among
input
parameters.
Our
results
show
plastic
other
litter
most
mobile
found
urban
setups,
being
subject
incipient
frequent
floods.
followed
wood
(anthropogenic
or
natural)
furniture.
Vans,
caravans
recreational
vehicles
(RVs)
can
be
more
than
light-weight
low-gradient
areas,
whereas
trucks
buses
considerably
stable;
although
hazardous,
when
mobilized.
Construction
metal
debris
predominantly
low
slope
areas.
When
integrated
maps
two-dimensional
(2D)
hydrodynamic
models,
curves
guide
planning
efforts
predict
mitigate
impacts
UFDs
during
extreme
events.
Marine Pollution Bulletin,
Journal Year:
2024,
Volume and Issue:
206, P. 116758 - 116758
Published: Aug. 3, 2024
The
nearshore
zone
turns
out
to
be
the
area
with
higher
concentration
of
plastic
debris
and,
for
this
reason,
it
is
important
know
processes
that
affect
transport
and
fate
type
litter.
This
study
focuses
on
investigating
dynamics
various
types
under
several
hydrodynamic
conditions
primarily
induced
by
waves.
2D
tests
were
carried
at
Hydraulic
Laboratory
University
Messina
reproducing
main
phenomena
occurred
during
wave
propagation
a
planar
beach.
More
than
200
different
tested
changing
characteristics,
water
depth,
characteristics
(density
shape),
roughness
fixed
bottom.
In
general,
can
observed
reduction
in
particle
displacement
occurs
due
to:
i)
decrease
steepness;
ii)
an
increase
depth;
iii)
size;
iv)
density.
However,
experimental
investigation
shows
some
bed
roughness,
even
when
hydraulically
smooth,
alter
these
results.
data
analysis
identified
criterion
predicting
short-term
action.
determine
equilibrium
conditions,
based
empirical
relationship,
takes
into
account
slope,
weight
debris.
Comptes Rendus Physique,
Journal Year:
2024,
Volume and Issue:
25(S3), P. 1 - 32
Published: Dec. 16, 2024
Plastic
pollution
is
a
very
active
research
topic
for
wide
variety
of
scientific
disciplines.
While
existing
reviews
plastic
in
the
ocean
cover
from
different
disciplinary
and
interdisciplinary
viewpoints,
this
review
addresses
contributions
laboratory
experiments
towards
geophysical
processes
important
marine
research.
We
on
transport,
transformations,
origin
fate
with
recommendations
future
