Journal of Hazardous Materials Letters,
Год журнала:
2021,
Номер
2, С. 100029 - 100029
Опубликована: Май 29, 2021
Subsurface
soil
naturally
experiences
dry-wet
and
freeze-thaw
cycles,
which
could
affect
the
leaching
of
previously
adsorbed
pollutants.
A
slow
release
poly-
perfluoroalkyl
substances
(PFAS)
from
impacted
subsurface
may
serve
as
a
long-term
diffuse
source
PFAS
to
groundwater.
Yet,
extent
these
weathering
conditions
is
unknown.
We
subjected
columns
packed
with
pre-adsorbed
perfluorooctanoic
acid
(PFOA)
cycles
observed
spike
in
PFOA
concentration
leachate
following
each
treatment
compared
no
treatment.
Weathering
released
high
colloids,
were
confirmed
by
particle-size
distribution
analysis,
SEM-EDS,
XRD.
Fractionation
water
sample
reveals
that
up
36
%
leached
was
associated
colloids.
Thus,
previous
studies
did
not
account
for
colloids
might
have
underestimated
soil.
Overall,
results
indicate
natural
can
enhance
colloid-associated
PFOA.
Therefore,
current
conceptual
site
models
quantify
zones
should
contribution
In
recent
decades,
climate
change
and
other
anthropogenic
activities
have
substantially
affected
groundwater
systems
worldwide.
These
impacts
include
changes
in
recharge,
discharge,
flow,
storage,
distribution.
Climate-induced
shifts
are
evident
altered
recharge
rates,
greater
contribution
to
streamflow
glacierized
catchments,
enhanced
flow
permafrost
areas.
Direct
withdrawal
injection,
regional
regime
modification,
water
table
storage
alterations,
redistribution
of
embedded
foods
globally.
Notably,
extraction
contributes
sea
level
rise,
increasing
the
risk
inundation
coastal
The
role
global
cycle
is
becoming
more
dynamic
complex.
Quantifying
these
essential
ensure
sustainable
supply
fresh
resources
for
people
ecosystems.
Renewable and Sustainable Energy Reviews,
Год журнала:
2024,
Номер
199, С. 114439 - 114439
Опубликована: Май 13, 2024
Hydropower
and
irrigation
are
essential
for
achieving
human
development
objectives
climate
mitigation
adaptation.
These
sectors
depend
on
the
same
grey
infrastructure,
such
as
dammed
reservoirs,
which
has
created
negative
socio-ecological
externalities
sectoral
conflicts
in
past.
Yet,
future
needs
infrastructure
both
their
interdependencies
remain
unclear.
We
address
this
gap
by
applying
data-fusion
machine-learning
approaches
provide
a
comprehensive
global
overview
new
dataset
that
elucidates
role
of
existing
dams
reservoirs
hydropower
irrigation.
then
review
projected
demands
storage
2050
analyze
how
growth
aligns
with
identified
potential
dams.
Globally,
projections
point
to
an
increased
demand
order
400
GW
2050,
amounts
around
60
%–64
%
+35
compared
today.
For
irrigation,
fully
leveraging
sustainable
water
resources
would
require
460
km3/yr
stored
water,
or
+70
Projected
larger
than
what
could
many
regions,
especially
Europe,
South
Asia,
Africa.
In
conditions,
will
be
increasingly
competition
infrastructure.
Our
findings
also
highlight
need
study
alternative
solutions,
other
forms
renewable
energy
nature-based
solutions
storage,
meet
societal
while
avoiding
associated
Journal of Hazardous Materials,
Год журнала:
2021,
Номер
417, С. 126159 - 126159
Опубликована: Май 19, 2021
Eroded
particles
from
the
source
zone
could
transport
a
high
concentration
of
perfluoroalkyl
acids
(PFAAs)
to
sediments
and
water
bodies.
Yet,
contribution
suspended
has
not
been
systematically
reviewed.
Analyzing
reported
studies,
we
quantitatively
demonstrate
that
in
surface
can
contain
significantly
higher
concentrations
PFAAs
than
sediment
below,
indicating
are
but
eroded
carried
upstream.
The
affinity
depends
on
particle
composition,
including
organic
carbon
fraction
iron
or
aluminum
oxide
content.
In
soils,
most
retained
within
top
5
m
below
ground
surface.
distribution
subsurface
varies
based
site
properties
local
weather
conditions.
depth
corresponding
maximum
PFAA
soil
decreases
with
an
increase
rainfall
amount
received
catchment
areas.
We
attribute
greater
accumulation
near
upper
layer
zones
upstream
receiving
heavy
rainfall.
Precursor
transformation
aerobic
is
anaerobic
zone,
thereby
making
serve
as
long-term
groundwater
pollution.
Collectively,
these
results
suggest
particles,
often
overlooked
vector
for
PFAAs,
be
dominant
pathway
environments.
Water,
Год журнала:
2023,
Номер
15(4), С. 742 - 742
Опубликована: Фев. 13, 2023
Groundwater
extraction
in
most
Middle
East
and
North
Africa
(MENA)
countries
far
exceeds
its
renewability,
which
ranges
from
6%
to
100%.
Freshwater
resources
support
food
production
are
very
limited
this
region.
Future
climate
predictions
include
more
consistent
longer
wet
periods
with
increasing
surplus
rainfall,
will
enhance
flood
flash
occurrences
the
MENA.
Demand
management
of
groundwater
managed
aquifer
recharge
(MAR,
also
called
replenishment,
water
banking,
artificial
recharge,
is
purposeful
aquifers
for
subsequent
recovery
or
environmental
benefits)
represent
essential
strategies
overcome
challenges
associated
depletion
change
impacts.
Such
would
enable
development
MENA
region
by
minimizing
stress
placed
on
these
resources,
as
well
reducing
deterioration
quality.
augmentation
through
dams
a
common
practice
different
around
globe.
Most
were
built
even
few
protection
act
one
way
another.
However,
operating
systems
mostly
dependent
natural
infiltration
accumulated
reservoir
area,
application
MAR.
This
review
presents
analyses
renewability
effectiveness
potential
MAR
technology.
study
indicates
that
efficiency
dam’s
between
15
47%
clustered
lower
limit.
Efficiency
reduced
clogging
bed
fine
materials.
Therefore,
there
need
improve
operation
using
Remote Sensing,
Год журнала:
2022,
Номер
14(7), С. 1538 - 1538
Опубликована: Март 22, 2022
In
September
2014,
Kashmir
witnessed
a
catastrophic
flood
resulting
in
significant
loss
of
lives
and
property.
Such
massive
losses
could
have
been
avoided
if
any
structural
support
such
as
dams
were
constructed
the
Jhelum
basin,
which
has
history
devastating
floods.
The
GIS-based
multicriteria
analysis
(MCA)
model
provided
three
suitability
zones
for
dam
locations.
final
suitable
sites
identified
within
highest
zone
based
on
topography
(cross-sections),
stream
order,
high
zone,
minimum
site
interval,
distance
from
roads,
protected
area
to
site.
It
was
discovered
that
10.98%
total
4347.74
km2
evaluated
falls
28.88%
medium
60.14%
low
zone.
Within
study
area,
four
viable
reservoir
with
holding
capacity
4,489,367.55
m3
revealed.
Water,
Год журнала:
2025,
Номер
17(7), С. 976 - 976
Опубликована: Март 27, 2025
This
review
examines
state-of-the-art
practices
in
water
harvesting
and
groundwater
recharge,
emphasizing
their
crucial
role
sustainable
resource
management.
Groundwater,
a
for
drinking
agricultural
water,
is
facing
depletion
due
to
the
combined
effects
of
urbanization,
climate
change,
unregulated
extraction.
paper
provides
comprehensive
overview
contemporary
knowledge
on
using
systematic
four-step
methodology
identify
analyze
relevant
studies
from
databases
like
Google
Scholar,
Scopus,
ScienceDirect.
It
categorizes
techniques,
such
as
rainwater,
flood
harvesting,
evaluates
effectiveness
enhancing
recharge.
Both
natural
artificial
recharge
methods
are
explored,
highlighting
improving
levels
quality.
study
also
reviews
estimation
techniques
applicability
across
hydrogeological
contexts.
promotes
balanced
approach
address
issues
scarcity
by
integrating
into
management
strategies.
integration
aims
build
resilience
against
change-driven
environmental
damage.
Recommendations
provided
enhance
sustainability
these
practices,
with
particular
focus
arid
semi-arid
regions
where
demand
rising.
Overall,
this
underscores
significance
promoting
long-term
sustainability.
