Journal of Membrane Science,
Journal Year:
2024,
Volume and Issue:
709, P. 123084 - 123084
Published: July 14, 2024
Hepatitis
A
virus
(HAV)
is
primarily
transmitted
through
contaminated
water.
This
study
developed
bioselective
polyvinylidene
fluoride
(PVDF)
and
polyethersulfone
(PES)
membranes
chitosan
hydrophilic
surface
modification
immobilization
of
HAV-specific
epitope-imprinted
polymers
(eIPs)
to
remove
trace
levels
HAV.
The
HAV
epitope
was
imprinted
using
solid-phase
synthesis,
involving
template
on
glass
beads,
polymerization
monomers,
elution
eIPs.
chosen
from
the
capsid
knob
enhanced
binding
affinity
due
its
high
accessibility
hydrophilicity.
average
hydrodynamic
size,
polydispersity
index,
zeta-potential
eIP
particles
were
232.6
nm,
0.29,
−44.36
mV,
respectively,
indicating
their
stability
in
liquid
environments.
X-ray
photoelectron
spectroscopy
(XPS)
Raman
spectroscopies
confirmed
functionalization
PVDF/PES
membranes.
fluorescence
microscopy
with
Rhodamine
B
monomer's
strong
intensity.
Atomic
force
(AFM)
monitoring
showed
that
enlarged
pore
structures
PVDF
improved
chemical
phase
distribution
PES
membrane
surfaces.
bare
chitosan-functionalized
PES/PVDF
after
had
lowest
highest
root
mean
square
roughness
values,
respectively.
Morphological
changes
observed
via
scanning
electron
(SEM)
revealed
smoothed
by
reducing
porosity,
while
increased
irregularities
sharper
edges
blob-like
structures.
Functionalized
hydrophilicity
filtration
efficiency,
whereas
naturally
maintained
consistent
water
absorption.
Chitosan
significantly
permeation
flux
increasing
improving
performance
capacity.
Virus
concentrations
measured
pre-
post-filtration
a
UV–visible
spectrophotometer
assess
performance.
Absorbance
at
215
nm
linear
relationship
0.006
13.5
IU
mL−1,
quantification
limit
0.36
mL−1
under
optimal
conditions.
These
new
removed
99.99
%
viruses
samples,
showing
robust
elimination
capabilities
practical
potential
for
drinking
purification.
Engineering and Technology Journal,
Journal Year:
2024,
Volume and Issue:
42(9), P. 1179 - 1192
Published: Sept. 3, 2024
This
study
aims
to
optimize
the
operational
variables
influencing
incorporation
of
Hesperidin
nanoparticles
(HSP
NPs)
into
poly(lactic
acid)/poly(butylene
adipate-co-terephthalate)
(PLA/PBAT)
for
manufacturing
mixed
matrix
membranes
(MMMs)
oily
wastewater
treatment.
An
optimization
method
was
employed
determine
optimal
values
key
process
factors
achieve
specific
flux
and
rejection
rates
exceeding
required
levels.
Statistical
techniques
such
as
response
surface
methodology
(RSM)
analysis
variance
(ANOVA)
were
used
enhance
performance
on
a
larger
scale.
research
investigated
impact
operating
parameters
oil
PLA/PBAT/HSP
across
all
samples.
The
studied
included
HSP
NPs
content
(0-0.05
wt.%),
concentration
(100-300
ppm),
transmembrane
pressure
(1.5-3.5
bar).
A
mathematical
model
calculating
(%)
developed.
findings
indicated
that
PLA/PBAT/HSP-based
MMMs
demonstrated
efficiency,
achieving
121
LMH
98.53%.
conditions
0.03
wt.%
HSP,
an
158.28
ppm,
3.5
bar
yielded
best
response.
results
show
exhibited
enhanced
separation
properties,
making
them
suitable
treating
in
various
applications.
The Canadian Journal of Chemical Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 2, 2025
Abstract
In
order
to
develop
a
polyphenylsulfone
(PPSU)
membrane
for
the
removal
of
textile
dyes,
novel
water‐soluble
known
as
partly
cross‐linked
nanoparticles
graft
copolymer
(PCLNPG)
is
presented
in
this
study
pore
forming
agent.
fully
investigate
its
effects
on
properties
surface,
morphology,
and
porosity,
performance,
PCLNPG
concentration
PPSU
solution
was
changed.
The
results
showed
that
membrane's
hydrophilicity
porosity
enhanced
when
it
made
using
0.75
wt.%
PCLNPG.
To
impact
characterization
nanocomposite,
variety
testing
methods
were
utilized.
Additionally,
longer
finger‐like
pores
more
porous
structure
created
content
increased.
However,
highest
values
water
flux
Congo
red
(CR)
dye
rejection
147.05
L
∙
m
−2
h
−1
98.59%,
respectively.
According
results,
treating
wastewater
with
PPSU/PCLNPG
membranes
could
be
beneficial
choice
due
performance
features.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(17), P. e36874 - e36874
Published: Aug. 26, 2024
The
main
objective
of
this
article
is
to
examine
one
the
most
important
challenges
facing
researchers
in
field
nanocomposite
membranes:
what
suitable
arrangement
(unmodified,
functionalized,
coated,
or
composite)
and
loading
site
for
nanostructure?
In
review
articles
published
on
membranes
recent
years,
focus
has
been
either
a
specific
application
area
(such
as
nanofiltration
desalination),
type
polymeric
materials
polyamide),
feature
membrane
antibacterial,
antimicrobial,
antifouling).
However,
none
them
have
targeted
aforementioned
objectives
efficacy
improving
filtration
performance
(IFP).
Through
IFP
calculation,
results
will
be
repeatable
generalizable
field.
novelty
current
research
lies
examining
assessing
impact
nanostructure
modification
enhancing
IFP.
Based
performed
results,
who
tend
use
treatment
organic,
textile,
brine
pharmaceutical
wastewaters
well
bioreactors,
Processes,
Journal Year:
2024,
Volume and Issue:
12(9), P. 1930 - 1930
Published: Sept. 8, 2024
This
research
explored
the
use
of
a
partially
cross-linked
graft
copolymer
(PCLNPG)
as
an
innovative
nanopolymer
pore-forming
agent
to
enhance
polyphenylsulfone
(PPSU)
membranes
for
protein
separation
applications.
The
study
systematically
examined
impact
incorporating
PCLNPG
at
varying
concentrations
on
morphological
and
surface
properties
PPSU
membranes.
A
thorough
characterization
resulting
PPSU-PCLNPG
was
performed,
focusing
changes
in
morphology,
water
affinity,
porosity,
pore
size,
size
distribution.
experimental
findings
demonstrated
that
led
significantly
more
porous
structure,
confirmed
by
SEM
analysis,
with
notable
increases
porosity
(nearly
double).
Additionally,
hydrophilicity
membrane
remarkably
enhanced.
Performance
evaluations
revealed
substantial
improvement
pure
flux,
flux
nearly
tripling.
BSA
retention
directly
correlated
concentration
former
loading
range
0.25–0.75
wt.%.
incorporation
also
reduced
fouling
propensity
reducing
both
cake
layer
resistance
(Rc)
plugging
(Rp).
These
results
underscore
potential
PCLNPG-PPSU
wastewater
reclamation
nutrient
recovery
Journal of Applied Polymer Science,
Journal Year:
2024,
Volume and Issue:
141(43)
Published: Aug. 26, 2024
Abstract
The
purpose
of
this
study
is
to
improve
the
performance
polyvinyl
chloride
(PVC)
ultrafiltration
membrane
with
graphene
oxide
(GO)
that
was
synthesized
from
pyrolysis
polypropylene
(PP)
bottles.
amount
GO
loading
in
structure
0.05,
0.15,
and
0.25
wt%.
x‐ray
diffractometer,
FTIR,
scanning
electron
microscopy
(SEM),
contact
angle
(CA),
water
content,
porosity,
mechanical
strength
were
used
characterize
membranes.
Cross‐sectional
SEM
results
membranes
indicated
modification
caused
formation
finger‐like
pores
bottom
part
also
these
holes
increased
dye
rejection
efficiency
(18
wt%
PVC/2
PVP/0.15
GO)
(14
PVP/0.25
GO).
CA
decreased
70
PVP)
62
GO),
which
indicates
increase
hydrophilicity
showed
best
related
a
92%
83%
for
100
ppm
methyl
blue.
