Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
ABSTRACT
Biodegradable
polymeric
membranes
can
reduce
the
environmental
impact
of
polymer
waste
from
discarded
used
in
water
treatment
and
desalination.
Poly(ε‐caprolactone)
(PCL),
a
promising
biodegradable
material,
faces
limitations
due
to
its
hydrophobicity,
affecting
salt
contaminant
adsorption.
To
overcome
this,
PCL
was
blended
with
oligomeric
PCL‐diol
(PCL‐D)
ratios
90:10,
80:20,
70:30.
Additionally,
12
wt%
laponite
(Lap),
an
anionic
synthetic
clay,
incorporated
enhance
mechanical
strength
functionality.
The
addition
PCL‐D
improved
porosity,
hydrophilicity,
antifouling
properties,
while
Lap
enhanced
performance.
pure
flux
(PWF)
increased
~188
Lm
−2
h
−1
for
neat
1124
70:30
blend
(P7D3‐L12),
contact
angle
(WCA)
decreased
~96°
~49°.
P7D3‐L12
membrane
exhibited
excellent
adsorption
heavy
metals
(Pb
2+
~84.9
Cd
~90.6
mg/g)
dyes
(MB
~45
NR
~57
mg/g).
It
also
showed
~36%–40%
retention
after
multiple
cycles
fouling
recovery
rate
(FRR)
~82%
five
cycles.
demonstrated
78%
weight
loss
compost
over
54
days,
indicating
biodegradability.
These
modified
offer
solution
sustainable
treatment.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 2, 2025
In
this
study,
we
synthesized
two
nanocomposites,
cross-linked
PVA/HKUST
and
PVA/ZIF-67,
by
integrating
metal–organic
frameworks
(MOFs)
into
electrospun
polyvinyl
alcohol
(PVA).
Several
characterization
techniques
including
FTIR,
XRD,
ICP,
SEM,
TGA,
UV–Vis,
zeta
potential,
N2
adsorption–desorption
were
employed.
The
adsorption
performance
of
the
composites
for
cefixime
(CFX)
removal
was
assessed
under
varying
conditions
such
as
MOF
content,
contact
time,
pH,
initial
CFX
concentration,
temperature.
ZIF-67
HKUST
contribute
to
high
efficiency
providing
a
porous
structure
with
surface
area,
facilitating
interactions
molecules,
enhancing
overall
stability
composite
material
in
process.
Langmuir
isotherm
model
revealed
maximum
capacity
282.5
mg/g
211.4
PVA/ZIF-67.
Notably,
rapidly
removed
within
50
min,
demonstrating
potential
these
nanofibers
wastewater
treatment.
However,
after
six
cycles,
efficiencies
declined
from
88
74%
85
59%
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(32), P. 12014 - 12028
Published: July 31, 2024
Green
energy
transition
has
supposed
to
give
a
huge
boost
the
electric
vehicle
rechargeable
battery
market.
This
generated
compelling
demand
for
raw
materials,
such
as
cobalt
and
nickel,
which
are
key
common
constituents
in
lithium-ion
batteries
(LIBs).
However,
their
existing
mining
protocols
concentrated
localization
of
ores
have
made
nickel
mineral
conundrums,
supplies
experience
shortages,
threaten
slow
progress
renewable
transition.
Aiming
contribute
sustainable
recycling
these
valuable
metals
from
LIBs
wastewater,
this
work,
we
explore
use
four
mixed
matrix
membranes
(MMMs)
embedding
different
metal–organic
frameworks
(MOFs),
i.e.,
MIL-53(Al),
MIL-53(Fe),
MIL-101(Fe),
{SrIICuII6[(S,S)-serimox]3(OH)2(H2O)}·39H2O
(SrCu6Ser)
polyether
sulfone
(PES),
recovery
cobalt(II)
nickel(II)
metal
cations
cobalt–nickel
aqueous
solutions
containing
interfering
ions.
Whereas
neat
PES
membrane
slightly
contributes
adsorption
ions,
showing
reduced
removal
efficiency
values
10.2
9.5%
Ni(II)
Co(II),
respectively,
inclusion
MOFs
polymeric
substantially
improves
performances.
The
MOF@PES
MMMs
efficiently
remove
water,
with
MIL-53(Al)@PES
being
one
that
presents
better
performance,
up
95%
Co(II).
Remarkably,
SrCu6Ser@PES
exhibits
outstanding
selectivity
toward
compared
ones,
efficiencies
63.7
15.1%
Co(II)
Ni(II),
respectively.
Overall,
remarkable
efficiencies,
versatility,
high
environmental
robustness,
cost-effective
synthesis
shown
by
family
situate
them
among
best
adsorbents
extraction
kind
contaminants.
