Revista de Gestão Social e Ambiental,
Год журнала:
2024,
Номер
18(10), С. e09002 - e09002
Опубликована: Окт. 16, 2024
Objective:
The
objective
of
this
study
was
to
evaluate
the
removal
Pb
and
As
in
aqueous
media
by
activated
clay
(AC).
Theoretical
Framework:
Heavy
metals
water
represent
a
risk
health
ecosystems,
their
through
new
materials
is
challenge
for
industry.
Method:
methodology
adopted
research
comprises
that
natural
(NC)
with
sodium
chloride
phosphoric
acid
followed
sonication.
A
synthetic
solution
prepared
at
different
pH.
Results
Discussion:
zero
charge
point
found
be
7.10
AC
8.02
NC,
ζ
potential
between
-
41.15
45.43
mV
pH
range
4
12,
degree
crystallinity
97.24%
crystal
size
2.85
nm
determined
XRD.
FTIR
analysis
allowed
identification
functional
groups
chelating
capacity.
Was
observed
75.51%
(110.40
mg/g)
23.23%
(58.13
97.75%
(106.41
100.0%
(206.53
NC
respectively
6
8.
Research
Implications:
Los
reaultadoe
encontrados
sugieren
que
la
arcilla
activada
se
convierte
en
un
material
alta
capacidad
de
adsorción
metales
pesados
sistemas
multimetal.
Esta
cualidad
debe
al
incremtno
grupos
funionales
su
superficie
y
tamaño
nanométrico
incrementa
el
área
contacto.
Originality/Value:
Activation
weak
sonication
an
environmentally
friendly
process
produces
high
heavy
metal
capacity
media.
PLoS ONE,
Год журнала:
2025,
Номер
20(5), С. e0322300 - e0322300
Опубликована: Май 12, 2025
This
study
assesses
heavy
metal
contamination
in
the
snow
cover
of
northeastern
Kazakhstan
by
analyzing
both
melted
filtrated
water
and
solid
sediment
after
filtration
near
various
pollution
sources.
The
research
examines
impact
oil
refining,
thermal
power
plants
(northern
industrial
zone),
aluminum
production
(eastern
transportation
on
dispersion.
Results
indicate
that
Zn,
Cr,
Pb
concentrations
phase
residential
areas
exceed
those
zones,
reaching
436.6,
259.1,
218.6
mg/kg,
respectively.
highest
overall
were
found
for
barium
(949.4
mg/kg)
manganese
(638.1
mg/kg).
In
liquid
fraction
(meltwater),
Zn
(58.6
μg/l)
Sr
(34.8
predominant,
while
Mn
(28.3
was
main
pollutant
eastern
zone.
Dust
load
values
ranged
from
42.3
to
418.5
mg/m²/day,
with
observed
Cd,
Pb,
Mo.
Despite
variations
dust
across
city
(135.5
mg/m²/day
northern
zone,
152.3
147.1
areas),
level
remains
low.
However,
a
sanitary-hygienic
assessment
revealed
most
maximum
permissible
levels
soil
influenced
facilities
transportation,
except
Mo,
V,
Mn.
ecological
risk
index
Pavlodar
calculated
at
192.13,
indicating
high
potential
risk.
These
findings
highlight
importance
as
an
indicator
environmental
need
continuous
monitoring
assess
urban
trends.
Revista de Gestão Social e Ambiental,
Год журнала:
2024,
Номер
18(10), С. e09002 - e09002
Опубликована: Окт. 16, 2024
Objective:
The
objective
of
this
study
was
to
evaluate
the
removal
Pb
and
As
in
aqueous
media
by
activated
clay
(AC).
Theoretical
Framework:
Heavy
metals
water
represent
a
risk
health
ecosystems,
their
through
new
materials
is
challenge
for
industry.
Method:
methodology
adopted
research
comprises
that
natural
(NC)
with
sodium
chloride
phosphoric
acid
followed
sonication.
A
synthetic
solution
prepared
at
different
pH.
Results
Discussion:
zero
charge
point
found
be
7.10
AC
8.02
NC,
ζ
potential
between
-
41.15
45.43
mV
pH
range
4
12,
degree
crystallinity
97.24%
crystal
size
2.85
nm
determined
XRD.
FTIR
analysis
allowed
identification
functional
groups
chelating
capacity.
Was
observed
75.51%
(110.40
mg/g)
23.23%
(58.13
97.75%
(106.41
100.0%
(206.53
NC
respectively
6
8.
Research
Implications:
Los
reaultadoe
encontrados
sugieren
que
la
arcilla
activada
se
convierte
en
un
material
alta
capacidad
de
adsorción
metales
pesados
sistemas
multimetal.
Esta
cualidad
debe
al
incremtno
grupos
funionales
su
superficie
y
tamaño
nanométrico
incrementa
el
área
contacto.
Originality/Value:
Activation
weak
sonication
an
environmentally
friendly
process
produces
high
heavy
metal
capacity
media.
