Recovery of strategic metals (cobalt, nickel) from lithium-ion batteries through adsorption and desorption: Insights in desorption mechanisms and ultrasound enhancement
Separation and Purification Technology,
Год журнала:
2025,
Номер
unknown, С. 132064 - 132064
Опубликована: Фев. 1, 2025
Язык: Английский
Highly effective removal of cobalt from aqueous solution via reusable nanocomposite of metal organic frame work and activated algae encapsulated onto double layer biopolymer
Inorganic Chemistry Communications,
Год журнала:
2025,
Номер
unknown, С. 114162 - 114162
Опубликована: Фев. 1, 2025
Язык: Английский
Engineering high-performance CTAB-functionalized magnesium silicate nano-adsorbent for efficient removal of Cd2+, Co2+, and Cu2+ from single-metal aqueous solutions
Frontiers in Chemistry,
Год журнала:
2025,
Номер
13
Опубликована: Май 8, 2025
The
development
of
highly
efficient,
recyclable
adsorbents
for
heavy
metal
remediation
remains
a
critical
challenge
in
environmental
engineering.
This
study
introduces
novel
cetyltrimethylammonium
bromide-functionalized
magnesium
silicate
(CTAB/MS)
nano-adsorbent
was
synthesized
through
multi-step
surface
modification
serpentinite
involving
intercalation
with
dimethyl
sulfoxide,
methanol
treatment,
and
CTAB
incorporation.
resulting
nanostructure
extensively
characterized
applied
the
removal
cadmium
(Cd2+),
cobalt
(Co2+),
copper
(Cu2+)
ions
from
contaminated
water.
characterization
findings
confirmed
significant
morphological
structural
modifications,
including
enhanced
area,
functional
group
availability,
mesoporosity,
which
contributed
to
adsorption
performance.
kinetic
modeling
that
process
predominantly
followed
pseudo-first-order
model,
suggesting
rapid
physisorption
mechanisms
controlled
initial
phase.
Equilibrium
studies
revealed
Langmuir
isotherm
indicating
monolayer
on
homogeneous
active
sites,
maximum
capacities
491.9
mg/g
481.8
434.3
at
303
K.
Furthermore,
statistical
physics-based
model
incorporating
steric
energetic
parameters
provided
deeper
mechanistic
insights.
energy
(ΔE)
values
remained
below
12.66
kJ/mol,
confirming
physical
process,
while
thermodynamic
analysis
indicated
an
exothermic
spontaneous
nature,
as
evidenced
by
negative
free
enthalpy
(G)
internal
(Eint)
values.
recyclability
assessment
demonstrated
CTAB/MS
retained
over
70%
its
efficiency
after
five
consecutive
regeneration
cycles,
underscoring
long-term
applicability
water
treatment.
highlights
potential
advanced,
cost-effective,
sustainable
solution
large-scale
purification.
Язык: Английский
Chankanai Zeolite Modified with Heteroatomic Derivatives of 3-Aminopropyltriethoxysilane as an Effective Sorbent for Ag(I), Co(II)
Water,
Год журнала:
2024,
Номер
16(23), С. 3416 - 3416
Опубликована: Ноя. 27, 2024
Bis-N,N-(3-triethoxysilylpropyl)thiosemicarbazide
3
was
obtained
by
the
condensation
of
3-aminopropyltriethoxysilane
1
with
thiosemicarbazide
2.
Ethyl
ether
N-[3-(triethoxysilyl)propyl]-b-alanine
5
interaction
an
equimolar
amount
aminopropyltriethoxysilane
and
ethyl
acrylate
4
(aza-Michael
reaction).
Synthesized
functional
organosilanes
were
successfully
immobilized
on
surface
natural
zeolite
Z
(Chankanai
deposit,
Kazakhstan).
Compounds
materials
have
been
studied
NMR
IR
Fourier
spectroscopy
X-ray
diffraction
analysis.
The
elemental
composition
morphology
modified
zeolites
Z3
Z5
using
SEM-EDX
modification
leads
to
changes
in
structure
material:
enlargement
particles
agglomerates,
becomes
more
homogeneous
less
porous.
This
indicates
a
high
degree
coverage
modifier
layer.
study
sorption
characteristics
initial
(Z3
Z5)
showed
capacity
relative
Ag(I)
Co(II)
(static
capacity,
SSC
=
35.85–23.92
mg/g),
whereas
values
for
20.63
16.64
mg/g.
adsorption
ions
solutions
prepared
Co(NO3)2·6H2O,
AgNO3
distilled
water.
choice
concentration
metal
ions,
as
well
pH
solutions,
corresponded
wastewater
from
real
electroplating
production.
Zeolites
can
be
used
various
sectors
industry,
ecology
medical
purposes
inexpensive
effective
adsorbents
(enterosorbents)
heavy
noble
metals.
Язык: Английский