Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
ABSTRACT
To
achieve
efficient
and
selective
removal
of
Cu
2+
from
a
multi‐ion
coexistence
environment,
‐imprinted
SA/CMC/AM
microspheres
(IMSCA)
were
synthesized.
The
adsorption
capacity
efficiency
the
material
under
different
preparation
conditions
investigated.
surface
morphology
functional
groups
IMSCA
characterized
analyzed
using
SEM,
FTIR,
XRD.
SEM
images
revealed
relatively
smooth
with
specific
pores
uniform
structure.
Special
peaks
appeared
in
FTIR
spectrum
IMSCA,
indicating
possibility
imprinting
process
presence
sites.
semicrystalline
structure
exhibited
by
imprinted
XRD
characterization
further
reinforces
likelihood
In
terms
kinetics,
followed
pseudo–second‐order
kinetic
model,
suggesting
that
chemical
was
dominant
during
process.
isotherms,
Langmuir
model
better
fitted
experimental
data,
monolayer
adsorption.
mixed
solutions
multiple
metal
ions.
After
10
adsorption–desorption
cycles,
remained
at
approximately
90%.
Compared
other
materials,
exhibits
higher
capacity,
faster
elution
rate,
superior
reusability.
Molecules,
Год журнала:
2024,
Номер
29(11), С. 2665 - 2665
Опубликована: Июнь 4, 2024
The
discharge
of
lead
and
cadmium
wastewater,
along
with
the
pollution
caused
by
phosphogypsum,
represents
a
particularly
urgent
environmental
issue.
This
study
employed
straightforward
hydrothermal
method
to
convert
phosphogypsum
into
porous
calcium
silicate
hydrate
(P-CSH),
which
was
then
used
remove
recover
Pb(II)
Cd(II)
from
wastewater.
adsorption
capacities
P-CSH
for
were
notably
high
at
989.3
mg/g
290.3
mg/g,
respectively.
processes
adhered
pseudo-second-order
kinetics
model
Langmuir
isotherm
model.
Due
identical
sites
on
both
Cd(II),
competitive
interaction
occurred
when
ions
present
simultaneously.
Additionally,
efficacy
minimally
impacted
presence
common
coexisting
cations
in
dominant
mechanisms
removing
via
chemical
precipitation
surface
complexation.
Moreover,
adsorbed
heavy
metals
efficiently
separated
reclaimed
wastewater
through
stepwise
desorption
process.
primary
components
residue
quartz
amorphous
SiO2.
Following
dissolution
pressurized
alkaline
leaching,
this
could
be
recycled
synthesizing
P-CSH.
research
offered
new
strategy
resourceful
use
metal
Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 26, 2024
ABSTRACT
To
achieve
efficient
and
selective
removal
of
Cu
2+
from
a
multi‐ion
coexistence
environment,
‐imprinted
SA/CMC/AM
microspheres
(IMSCA)
were
synthesized.
The
adsorption
capacity
efficiency
the
material
under
different
preparation
conditions
investigated.
surface
morphology
functional
groups
IMSCA
characterized
analyzed
using
SEM,
FTIR,
XRD.
SEM
images
revealed
relatively
smooth
with
specific
pores
uniform
structure.
Special
peaks
appeared
in
FTIR
spectrum
IMSCA,
indicating
possibility
imprinting
process
presence
sites.
semicrystalline
structure
exhibited
by
imprinted
XRD
characterization
further
reinforces
likelihood
In
terms
kinetics,
followed
pseudo–second‐order
kinetic
model,
suggesting
that
chemical
was
dominant
during
process.
isotherms,
Langmuir
model
better
fitted
experimental
data,
monolayer
adsorption.
mixed
solutions
multiple
metal
ions.
After
10
adsorption–desorption
cycles,
remained
at
approximately
90%.
Compared
other
materials,
exhibits
higher
capacity,
faster
elution
rate,
superior
reusability.
