Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: April 19, 2025
A
Fe-modified
black
peanut
shell
biochar
(Fe@BC)
was
fabricated
using
FeCl3
as
a
magnetic
modifier,
its
sorption
for
Pb(II)
in
mixed
Pb(II),
Cu(II),
Ni(II)
solutions
examined.
It
showed
that
Fe@BC
had
better
adsorption
Pb(II).
While
the
optimal
pH
4.0,
and
equilibrium
time
8
h.
The
capacity
of
22.535
mg/g
systems.
Interestingly,
exhibited
decreasing
trend.
In
contrast,
Cu(II)
increased
with
rising
temperature.
fitting
theoretical
models
them
followed
quasi-second
kinetic
model,
such
an
spontaneous
process.
Additionally,
fitted
well
Freundlich
isotherm
model.
Conversely,
obeyed
Langmuir-Freundlich
Mechanisms
metal
ions
mainly
enclosed
ion
exchange,
surface
physic-sorption,
pore
adsorption,
groups'
bonding
effect.
Regeneration
it
can
be
cycled
four
times
HCl
desorbent.
Especially
simulated
wastewater,
remarkable
organic
matters,
demonstrating
promising
adsorbent
removing
from
wastewater.
Heliyon,
Journal Year:
2025,
Volume and Issue:
11(4), P. e42799 - e42799
Published: Feb. 1, 2025
This
study
presents
a
novel
composite
superabsorbent
hydrogel
(SAH)
synthesized
from
nanosilica
and
polyacrylic
acid,
demonstrating
exceptional
efficacy
in
removing
Congo
Red
dye
wastewater.
Utilizing
fast
concentration
gradient
method,
we
achieved
the
synthesis
of
with
high
specific
surface
area
380
m2/g,
total
pore
volume
0.81
cm3/g,
mean
diameter
17
nm.
The
modified
particles
are
well-dispersed,
around
83.5
%
falling
within
20-35
nm
size
range.
resulting
exhibited
swelling
ratio
165
after
135
min
immersion
water.
Remarkably,
over
98.5
removal
efficiency
at
sorbent
dosage
3
g/L
contact
time
1
h
pH
7.
maximum
monolayer
capacity
obtained
Langmuir
isotherm
was
555.56
mg/g.
Additionally,
it
maintained
71.6
five
regeneration
cycles,
highlighting
its
potential
for
sustainable
wastewater
treatment
applications.
possible
mechanisms
involve
electrostatic
interactions
hydrogen
bonding
between
molecules
silica
nanoparticles
or
hydrogel,
facilitated
by
functional
groups
such
as
hydroxyl,
carboxylic,
amino
groups.
research
not
only
advances
understanding
properties
but
also
introduces
an
innovative
approach
to
enhance
performance
nanosilica-based
adsorbents
environmental
remediation,
marking
significant
contribution
field
management.
Environmental Science Advances,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Calcined
LDHs
materials
decorated
on
ZnO
nanorods
improved
the
adsorption
of
Reactive
Blue
221
dye
and
exhibited
antibacterial
activity
against
E.
coli
,
S.
aureus
typhimurium
.
Environmental Science Advances,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Poly(AN-
co
-AMPS)
was
synthesized
via
free
radical
polymerization
for
brilliant
green
dye
removal.
It
showed
high
adsorption
efficiency,
stability,
and
reusability,
making
it
a
promising
eco-friendly
adsorbent
wastewater
treatment.
