Sustainability,
Год журнала:
2023,
Номер
15(24), С. 16865 - 16865
Опубликована: Дек. 15, 2023
The
occurrence
of
microplastics
(MPs)
and
their
omnipresence
have
attracted
enormous
attention
across
the
globe;
however,
research
on
MPs
in
South
Africa
is
still
its
infancy
thus,
data
are
very
much
lacking.
Approximately
120
million
tons
general
waste
generated
each
year
Africa,
which
exacerbates
pressure
ability
municipalities
to
manage
waste.
Wastewater
treatment
plants
(WWTPs)
at
center
this
that
includes
plastic
debris
primary
discharged
from
households
industries.
In
general,
removal
efficiency
globe
was
found
be
between
70%
99%,
with
biological
technology
common
both
secondary
steps
WWTPs.
Furthermore,
current
review
paper
has
revealed
there
a
wide
gap
fate
WWTPs
Africa.
This
worrying
factor
considering
increasing
rate
generation
due
rapid
industrialization,
urbanization,
overpopulation
country.
More
so,
scarcity
regarding
freshwater
widely
noticeable
Therefore,
given
amounts
households,
industries,
littered
into
surface
waters,
should
urgent
they
deserve.
To
achieve
effective
sustainable
management
water
resources
services
set
out
National
Development
Plan
(NDP)
2030
adopted
by
government,
status
capabilities
remove
must
monitored
addressed.
addition
achieving
zero
landfill
goal
2030,
circular
economy
regarded
as
most
model
for
solving
crisis
environment;
therefore,
full
implementation
required
substantial
impact.
TrAC Trends in Analytical Chemistry,
Год журнала:
2024,
Номер
172, С. 117566 - 117566
Опубликована: Янв. 30, 2024
The
analysis
of
microplastics
(MPs)
in
terrestrial
environments
and
the
evaluation
their
environmental
risk
has
gained
great
attention,
owing
to
increasing
evidence
for
widespread
presence
soils
freshwater
sediments
globally.
Once
environment,
MPs
undergo
abiotic
biotic
processes
which
alter
properties
integrity:
this
process
is
called
"aging"
implications
fate
these
contaminants,
morphology
surface
chemistry.
Aging
may
also
affect
analytical
assessment
samples:
samples
likely
contain
aged
MPs,
while
methods
are
generally
established
using
pristine
plastics
validation.
This
can
lead
uncertainties
quantification
characterization.
critical
review
summarizes
current
trends
simulation
characterization
MP
aging
laboratory
conditions,
highlighting
limitations
knowledge
gaps.
It
discusses
challenges
induced
by
samples,
providing
directions
toward
possible
solutions.
Environmental Pollution,
Год журнала:
2024,
Номер
345, С. 123502 - 123502
Опубликована: Фев. 3, 2024
Microplastics
(MPs)
pose
a
global
concern
due
to
their
ubiquitous
distribution.
Once
in
the
environment,
they
are
subject
aging,
which
changes
chemical-physical
properties
and
ability
interact
with
organic
pollutants,
such
as
pesticides.
Therefore,
this
study
investigated
interaction
of
hydrophobic
herbicide
terbuthylazine
(TBA),
is
widely
used
agriculture,
artificially
aged
polyethylene
(PE)
MP
(PE-MP)
understand
how
aging
affects
its
sorption.
PE
was
by
an
accelerated
weathering
process
including
UV
irradiation,
hydrogen
peroxide,
ultrasonic
treatment,
particles
were
characterized
comparison
pristine
particles.
Sorption
kinetics
performed
for
materials,
while
further
sorption
studies
PE-MP
included
determining
environmental
factors
pH,
temperature,
TBA
concentration.
found
be
significantly
lower
on
compared
because
led
formation
oxygen-containing
functional
groups,
resulting
reduction
hydrophobicity
negatively
charged
sites
oxidized
surfaces.
For
PE-MP,
best
described
pseudo-second-order
model,
it
intra-particle
diffusion
result
crack
pore
formation.
followed
decreasing
trend
increasing
became
less
favorable
at
higher
temperatures.
The
isotherm
data
revealed
complex
altered,
heterogeneous
surfaces
involving
interactions,
bonding,
π-π
Sips
adsorption
model.
Desorption
low,
confirming
strong
interaction.
However,
thermodynamic
results
imply
that
increased
temperatures,
those
from
climate
change,
could
promote
re-release
into
environment.
Time-of-flight
secondary
ion
mass
spectrometry
(ToF-SIMS)
confirmed
onto
PE.
The Science of The Total Environment,
Год журнала:
2023,
Номер
893, С. 164807 - 164807
Опубликована: Июнь 13, 2023
Plastic
particles
can
impact
the
environmental
fate
and
bioavailability
of
essential
inorganic
micronutrients
non-essential
(toxic)
metals.
The
sorption
metals
to
plastic
has
been
demonstrated
be
facilitated
by
ageing,
a
phenomenon
encompassing
an
array
physical,
chemical,
biological
processes.
This
study
deploys
factorial
experiment
untangle
role
different
ageing
processes
in
determining
Plastics
made
three
polymer
types
were
aged
both
through
abiotic
(ultraviolet
irradiation,
UV)
biotic
(through
incubation
with
multispecies
algal
inoculum
forming
biofilm)
under
controlled
laboratory
conditions.
Pristine
samples
characterized
for
their
physiochemical
properties
Fourier-transformed
infrared
spectroscopy,
scanning
electron
microscopy
water
contact
angle
measurements.
Their
affinity
toward
aluminum
(Al)
copper
(Cu)
aqueous
solutions
was
then
assessed
as
response
variable.
All
(alone
or
combined)
influenced
surface
resulting
reduced
hydrophobicity,
changes
functional
groups
(i.e.,
increase
oxygen
containing
after
UV
appearance
marked
bands
amides
polysaccharides
biofouling),
well
nanomorphology.
Al
Cu
instead
statistically
dependent
(p
<
0.01)
on
degree
biofouling
covering
specimens.
Biofouled
displayed
fact
substantial
metal
causing
depletion
up
tenfold
compared
pristine
polymers,
regardless
type
presence
absence
other
treatments.
These
results
confirm
hypothesis
that
accumulation
is
substantially
driven
biofilm
present
plastics.
findings
also
highlight
importance
investigating
implications
nutrients
availability
environments
impacted
this
pollution.
The Science of The Total Environment,
Год журнала:
2024,
Номер
944, С. 173745 - 173745
Опубликована: Июнь 5, 2024
Microplastics
(MPs)
pose
significant
environmental
pollution
problems
owing
to
their
diverse
properties
such
as
various
shapes,
sizes,
compositions,
surface
features,
and
levels
of
degradation.
Moreover,
interactions
with
toxic
chemicals
aging
processes
add
complexity
research.
This
study
investigated
the
adsorption
triphenyl
phosphate
(TPhP)
in
soil-only,
MP-only,
soil-MP
simulated
environments
under
different
conditions.
The
experiment
involved
three
phases:
initial
exposure
a
pH
5.5
fluorescent
light,
subsequent
introduction
ultraviolet
(UV)
radiation,
adjustment
4.0
7.0,
while
maintaining
UV
exposure,
each
lasting
7
days.
found
that
factors
affected
TPhP
sorption
capacity,
higher
observed
radiation
acidic
In
contrast,
MP-only
systems
showed
no
clear
trend
for
adsorption,
suggesting
kinetic
limitations.
When
MPs
were
added
soil,
dynamics
altered,
varying
capacities
MP
polymers
ATR-FTIR
spectroscopy,
micro-Raman
water
contact
angle
measurements
suggested
potential
photooxidation
changes
hydrophobicity
subjected
provides
valuable
insights
into
interplay
between
soil
properties,
characteristics,
determining
environments.
Plants,
Год журнала:
2024,
Номер
13(17), С. 2526 - 2526
Опубликована: Сен. 8, 2024
With
the
increasing
amounts
of
microplastic
(MP)
deposited
in
soil
from
various
agricultural
activities,
crop
plants
can
become
an
important
source
MP
food
products.
The
last
three
years
studies
gave
enough
evidence
showing
that
plastic
form
nanoparticles
(<100
nm)
be
taken
up
by
root
system
and
transferred
to
aboveground
plant
parts.
Furthermore,
presence
affects
growth
disturbing
metabolic
processes
plants,
thus
reducing
yields
quality.
Some
adverse
effects
on
have
been
already
described
meta-analysis;
however,
this
review
provides
a
comprehensive
overview
latest
findings
about
possible
risks
related
wide
occurrence
production
safety,
including
topics
changes
pesticides
behavior
pathogen
spreading
under
possibly
threaten
human
health.
