La
calidad
del
agua
superficial
es
un
tema
discutido
a
nivel
mundial,
principalmente
por
la
influencia
de
contaminantes
origen
antrópico,
como
resultado
esto,
diversas
entidades
gubernamentales,
ambientales,
universidades
y
organizaciones
dedicadas
conservación
medio
ambiente
se
han
dedicado
evaluar
los
efectos
e
impactos
generados
las
actividades
humanas.
El
río
Cesar
juega
papel
vital
en
el
departamento
ciudades
cercanas,
ya
que
son
áreas
clave
para
económicas
fundamentales
región,
sin
embargo,
estas
tenido
impacto
negativo
ecosistemas
esta
fuente
natural.
Por
lo
tanto,
objetivo
investigación
fue
determinar
cuenca
media
Índice
Calidad
Agua
desarrollado
IDEAM,
cual
tomaron
seis
estaciones
muestreo
analizaron
cinco
parámetros
(pH,
conductividad
eléctrica,
oxígeno
disuelto,
sólidos
suspendidos
Demanda
Química
Oxígeno),
encontrando
varia
una
regular
mala
largo
cuenca.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Фев. 4, 2024
Abstract
The
escalating
presence
of
heavy
metals
(HMs)
in
the
Panjkora
River
water
and
their
impact
on
fish
pose
a
significant
challenge
to
both
ecological
community
human
health.
Consequently,
study
was
conducted
with
primary
aim
elucidating
influence
health-related
issues.
To
address
this,
concentrations
metals,
including
arsenic
(As),
cadmium
(Cd),
iron
(Fe),
manganese
(Mn),
lead
(Pb),
zinc
(Zn),
species
Crossocheilus
diplocheilus
were
investigated
across
various
locations
within
area.
quantification
HMs
concentration
carried
out
utilizing
an
atomic
absorption
spectrophotometer.
highest
found
as
0.060
mg/L
for
Pb
lowest
Fe,
whereas
2.028
mg/kg
As.
Human
health
risk
associated
eating
evaluated
by
using
indices
(HRI)
non-carcinogenic
risks
targeted
cancer
(TR)
carcinogenic
risks.
values
index
greater
than
1
except
Fe
(0.0792),
Zn
(0.782),
Mn
(0.541).
mean
HRI
>
recorded
As
(62.99),
Cd
(26.85),
(10.56).
This
implies
that
consumption
from
river
is
not
safe
up
some
extent.
Similarly,
TR
value
As,
Cd,
2.8
$$\times
{10}^{-2}$$
×10-2
,
1.6
×
$${10}^{-3}$$
3
which
showed
risk.
There
detected
River.
government
must
implement
adaptive
measures
this
issue
pollution
Additionally,
there
need
further
extensive
prolonged
research
studies
context.
Journal of Molecular Liquids,
Год журнала:
2024,
Номер
399, С. 124480 - 124480
Опубликована: Март 14, 2024
Unsafe
levels
of
chloride
in
drinking
water
can
make
it
unpalatable,
susceptible
to
infrastructure
corrosion
and
prone
heavy
metals
mobility.
Conventional
mitigation
strategies
are
subjected
inefficient
performance
costly
operation,
necessitating
innovations
for
more
sustainable,
affordable,
scalable
technologies.
In
this
study,
silver
nanoparticles-modified
Ti3C2
MXene
nanocomposite
(AgMX)
is
synthesised
via
dry
impregnation
method
effective
removal
ion
from
water.
The
composite
physicochemical
properties
were
thoroughly
characterised
using
various
analytical
techniques,
including
TEM,
SEM,
XRD,
EDS,
BET,
zeta
potential
pHpzc
analysis.
experimental
testing
was
optimised
CCD-RSM
terms
adsorbent
dosage
(0.2–2
g/L),
reaction
time
(1–17
min),
concentration
(10–90
mg/L).
Under
optimal
conditions
(adsorbent:1.55
g/L,
time:
12.19
min,
&
concentration:
52.17
mg/L),
a
promising
91.8
%
achieved.
Langmuir
model
showed
the
best
fit
adsorption
isotherm
(R2:
0.9852)
comparing
Freundlich
Dubinin-Kaganer-Radushkevich
(DKR)
isotherms,
while
pseudo-second-order
kinetic
offered
closest
data
results
9893)
compared
pseudo-first-order,
Elovich
Intraparticle
diffusion
models
R2:
0.2335,0.1212
0.2050,
respectively.
reusability
regeneration
after
four
repeated
cycles
found
practically
efficient
as
≥
68
84
%,
outcomes
study
demonstrate
efficiency
formulated
material
sustainable
treatment
chloride-contaminated
Water Environment Research,
Год журнала:
2024,
Номер
96(2)
Опубликована: Фев. 1, 2024
Abstract
The
process
of
mining
activities
often
causes
the
formation
acid
mine
drainage
(AMD).
Through
rock
fractures
and
underground
rivers,
AMD
can
easily
enter
groundwater
environment
near
mines
cause
serious
pollution
to
water
quality.
In
order
effectively
evaluate
quality
polluted
understand
its
threat
ecosystem
around
mine.
this
study,
four
distribution
areas,
Guiyang
City,
Bijie
Qianxinan
Prefecture,
Qiandongnan
Prefecture
in
Guizhou
Province,
were
used
as
study
area.
A
composite
model
for
evaluation
was
constructed
using
factor
analysis
(FA),
analytic
hierarchy
(AHP),
fuzzy
comprehensive
(FCE).
Furthermore,
by
introducing
weighted
average
method
level
characteristic
value
(
J
),
type
body
environmental
evaluated
comprehensively,
respectively.
Compared
with
traditional
model,
AHP‐FA‐FCE
has
obvious
advantages
selection
indicators,
determination
indicator
weights,
types,
results
obtained
are
more
reasonable
accurate.
Three
common
factors
mainly
controlled
mineral
oxidation
factor,
human
activity
dissolution
extracted
dimension
reduction
original
hydrochemical
data
FA.
samples
SO
4
2−
,
Fe,
Al,
Mn,
Na,
F
−
showed
that
area
a
whole
dominated
class
V
water,
which
accounted
77.78%
total.
Based
on
statistical
data,
it
found
influenced
water–rock
interactions
components,
is
‐Ca‐Mg
type.
from
excellent
poor.
all
areas
than
3,
overall
strong
interaction
may
be
main
pollution.
provide
some
theoretical
reference
AMD‐polluted
areas.
Practitioner
Points
constructed.
analysis‐based
proposed.
This
improved
weighting
evaluation.
discriminant
based
various
types
evaluated.
Water,
Год журнала:
2023,
Номер
15(18), С. 3242 - 3242
Опубликована: Сен. 12, 2023
As
a
crucial
surface
water
resource,
the
Yangtze
River
has
raised
concerns
about
its
quality
due
to
importance
in
economic
and
social
development,
environmental
conservation,
agricultural
development.
The
principal
component
analysis
(PCA),
hierarchical
clustering
(HCA),
index
(WQI)
were
utilized
assess
overall
condition
detect
spatiotemporal
patterns
key
parameters
of
River.
All
usage
data
determined
monthly
from
samples
taken
2021
at
33
monitoring
stations.
results
demonstrated
that
85%
stations
whole
maintained
“good”
condition,
with
average
WQI
values
ranging
71.16
81.25.
was
slightly
poorer
summer,
56.6%
being
“medium”
condition.
Spatially,
there
downward
trend
upstream
downstream.
Two
significant
scores
(PCs)
produced
as
result
PCA
HCA,
explaining
60.3%
total
variance
upstream,
67.4%
transition
zone,
50.4%
downstream,
respectively.
In
addition,
middle–upper
reaches
found
correlated
CODMn,
whereas
downstream
mainly
influenced
by
TUR,
TP,
T,
DO.
primarily
motivated
our
understanding
River’s
status
suggested
main
targets
for
improvement
different
areas.
