Water Science & Technology Water Supply,
Год журнала:
2024,
Номер
24(2), С. 497 - 516
Опубликована: Фев. 1, 2024
Abstract
The
study
aimed
to
assess
the
dynamic
behavior
of
groundwater
levels
in
southwestern
districts
Indian
Punjab,
focusing
on
spatial
and
temporal
distribution
waterlogged
overexploited
areas
before
after
monsoon
season.
utilized
level
data
spanning
48
years
(1973
-2020),
using
GIS
map
visualize
fluctuations
throughout
area.
findings
revealed
significant
variations
within
district
Punjab
during
different
seasons.
maximum
were
found
be
97,350
ha
(1973,
Faridkot),
56,080
(1981,
Ferozepur),
21,730
(1991,
Sri
Muktsar
Sahib),
52,790
(2000,
6,760
(2010,
2,910
(2020,
Fazilka).
However,
potential
waterlogging
area
observed
Fazilka
covered
about
one-third
(32.52%)
2020.
identified
that
45%
faced
risk
overexploitation,
46%
was
considered
safe,
9%
either
or
at
waterlogging.
Over
years,
demonstrated
nature
including
Ferozepur
via
Faridkot
Sahib
districts.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Overexploiting
ecosystems
to
meet
growing
food
demands
threatens
global
agricultural
sustainability
and
security.
Addressing
these
challenges
requires
solutions
tailored
regional
agro-ecological
boundaries
(AEBs)
overall
risks.
Here,
we
propose
a
globally
consistent
regionally
adapted
approach
for
quantifying
AEBs.
Based
on
this
approach,
develop
region-specific
integrated
Footprint-AEB
framework
that
combines
six
environmental
footprints
(EFs)
with
AEBs
capture
the
impacts
China's
agro-ecosystems.
Results
indicate
individual
EFs
cannot
reliably
reveal
complexity
of
stressors
without
comprehensive
assessment
relative
determined
boundaries.
For
example,
Northwest
China
faces
higher
water
boundary
stress
despite
lower
compared
Central
China,
regions
such
as
Qinghai
Ningxia
exhibit
AEB
driven
by
combined
water,
land,
biodiversity
stresses.
Additionally,
imbalanced
transfer
via
trade,
mainly
from
industrialized
eastern
vulnerable
western
regions,
is
identified
key
driver
exceedance
in
China.
This
fosters
nuanced
understanding
responsibility
equity.
The
provides
new
insights
into
agro-ecosystem
dynamics
supports
targeted
interventions
avoid
shifting
stressors.
These
confront
agro-ecosystems
worldwide.
ACS Sustainable Resource Management,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 14, 2025
Nitrate
groundwater
contamination
poses
significant
health
risks,
especially
in
infants
and
pregnant
women.
Therefore,
effective
aqueous
nitrate
removal
is
crucial.
This
study
focuses
on
using
acid
modified
biochar
derived
from
the
invasive
plant
Prosopis
juliflora
bark,
hereafter
referred
to
APBBC700
used
for
all
studies.
was
characterized
Fourier-transform
infrared
spectroscopy
(FTIR)
identify
surface
functional
groups,
scanning
electron
microscopy
(SEM)
morphology,
transmission
(TEM)
size
shape.
The
Brunauer,
Emmett,
Teller
area
(SBET)
of
20.8
m2/g
compared
14.5
raw
(PBBC700).
Fixed
bed
sorption
studies
were
carried
out
at
depths
7,
14,
21
cm,
flow
rates
3,
5,
7
mL/min,
10,
20,
30
mg/L
NO3-N.
Column
breakthrough
data
fitted
Thomas,
Yoon-Nelson,
Adam-Bohart,
Wolborska,
bed-depth-service-time
(BDST)
models.
BDST
models
best
fit
fixed-bed
(R2
=
0.74
0.98).
A
maximum
adsorption
capacity
8.51
mg/g
obtained
a
rate
3
cm
depth,
regeneration
0.5
N
NaCl.
Adsorption
capacities
7.72,
6.73,
5.81,
5.69,
5.31,
5.3,
4.21,
2.0
0th,
1st,
2nd,
3rd,
4th,
5th,
6th,
7th
cycles,
respectively.
even
presence
coexisting
anions.
Twenty-four
samples
Delhi
NCR
Haryana
collected,
with
12
exceeding
BIS
limit
45
(10.2
NO3-N),
which
successfully
treated
meet
permissible
level.
model's
prediction
times
varying
aids
designing
large-scale
filtration
systems
removal.
preparation
cost
estimated
be
∼US$
6.87
per
kg.
Using
production
supports
achieving
Sustainable
Development
Goal
(SDG)
6
(Clean
Water
Sanitation).
Journal of Water and Health,
Год журнала:
2024,
Номер
22(2), С. 350 - 366
Опубликована: Янв. 9, 2024
Abstract
The
present
study
explores
the
suitability
of
groundwater
for
drinking
purpose
and
evaluates
non-carcinogenic
health
risks
children,
women,
men.
For
this
purpose,
47
samples
were
collected
analyzed
physicochemical
parameters,
including
nitrate
concentration.
results
revealed
that
concentration
varied
from
15
to
85
mg/L
48.93%
exceeded
Bureau
Indian
Standards’
limits
45
mg/L.
spatial
map
pollution
index
specifies
most
area
lies
in
moderate
high
zones.
Principal
component
analysis
was
also
applied,
five
principal
components
achieving
eigenvalues
more
than
1
with
a
cumulative
variance
77.36%
found
be
sufficient.
findings
risk
rates
range
0.628
3.559
(average
2.069)
0.427
2.421
1.408)
0.362
2.049
1.191)
men,
approximately
80%
population
region
is
exposed
risks.
assessment
specified
children
are
susceptible
women
suggest
quality
has
deteriorated,
emphasizing
need
treatment
before
drinking.
