Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(23), P. 11057 - 11057
Published: Nov. 27, 2024
Heavy
metals,
such
as
Pb(II),
Cr(III),
and
Cd(II),
are
frequently
discharged
into
the
environment,
resulting
in
a
threat
for
health
of
living
organisms.
Microalgae
represent
an
ecological
method
removal
these
pollutants.
The
capture
capability
active
dried
Chlamydomonas
reinhardtii
towards
both
mono-ionic
multi-ionic
solutions
is
evaluated
to
study
bioremediation
low-polluted
wastewaters.
Several
characterization
techniques
have
been
performed
morphology,
composition,
interaction
between
metals
microalgal
functional
groups
wall.
effect
operating
conditions,
contact
time
pH,
assessed;
increased
4
days
did
not
influence
adsorption
yields
Pb
Cr,
but
it
had
negative
on
Cd
adsorption,
while
impact
pH
was
mainly
affecting
chemical
speciation,
rather
than
capability.
microalga
showed
larger
affinity
Cd,
respectively,
80
76%
(w/w)
only
65%
total
Cr
adsorbed,
suggesting
preferential
biosorption.
Revista de Gestão Social e Ambiental,
Journal Year:
2025,
Volume and Issue:
19(2), P. e011240 - e011240
Published: Feb. 13, 2025
Objective:
This
study
aims
to
evaluate
the
effectiveness
of
ferric
chloride
(FeCl₃)
and
zeolite
as
adsorbents
in
reducing
copper
content
dye
pollutants
batik
wastewater.
Theoretical
Framework:
Adsorption
was
chosen
method
for
this
due
its
suitability
addressing
challenges
wastewater
treatment.
Modifications
preparation
represent
an
effective
approach
developing
adsorption
models
assessing
their
performance.
The
adsorbent
used
is
FeCl₃/zeolite,
a
composite
material
created
through
impregnation
process
that
combines
zeolite.
working
mechanism
FeCl₃/zeolite
involves
coagulation
processes
conducted
within
laboratory-scale
column.
demonstrated
by
significant
ability
reduce
heavy
metal
pollutants.
Method:
materials
include
FeCl₃.
Zeolite
activated
using
HCl
enhance
pore
size.
Subsequently,
impregnated
with
FeCl₃
at
ratio
3:1
3
hours
under
stirring
250
rpm.
mixture
then
filtered
separate
filtrate
precipitate.
precipitate
calcined
200°C
2
characterized
SEM-EDX
analyze
adsorbent's
properties.
Finally,
prepared
applied
treat
Results
Discussion:
best
results
obtained
from
show
achieved
maximum
reduction
Cu
30%
27.86%.
These
were
450
grams
time
10
minutes.
Research
Implications:
are
presented
data,
which
can
be
reference
or
input
management,
particularly
Additionally,
findings
serve
basis
environmental
monitoring
control
efforts.
Originality/Value:
on
Previous
studies
have
not
explored
use
Molecules,
Journal Year:
2024,
Volume and Issue:
29(23), P. 5589 - 5589
Published: Nov. 26, 2024
The
development
of
widely
sourced
and
efficient
adsorbents
is
crucial
for
the
adsorption
lead
from
wastewater.
A
novel
adsorbent,
N-doped
weathered
coal
(NWC),
was
prepared
in
this
study
using
as
precursor
triethylenetetramine
(TETA)
N-source.
performance
behavior
Pb(II)
on
NWC
were
investigated
batch
experiments.
results
demonstrated
that
has
an
towards
Pb(II),
with
a
maximum
monolayer
capacity
216.32
mg
g−1
(25
°C).
process
spontaneous
endothermic,
importance
chemisorption
observed.
mechanisms
also
analyzed
based
its
physicochemical
structure
before
after
desorption
N
O
functional
groups,
acting
electron
donors,
promoted
coordination
making
complexation
dominant
mechanism.
Its
contribution
to
mechanism
could
reach
44.81%.
promising
material
both
wastewater
treatment
resource
utilization
coal.
