Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 17, 2024
Abstract
Commercial
ultrafiltration
(UF)
membranes
are
typically
produced
with
the
phase
inversion
method.
Higher
density
and
torturous
pore
channels
of
these
membranes,
result
declined
water
flux
rate.
This
research
looks
to
develop
a
new
class
thin
film
composite
(TFC)
UF
high
flux,
based
on
nanofibrous
support
top
layer.
For
this,
in
first
step,
PET
electrospun
sub-layer
thicker
fiber
diameter
was
prepared
from
waste
flake,
next
mid-layer
thinner
(compared
diameter)
electrospinning
sub-layer.
Finally,
hydrophilic
layer
chitosan/multi-walled
carbon
nanotube
applied
self-support
PET/PET
dip-coating
The
showed
that
had
pure
(240
l/m
2
h
bar),
oil/water
emulsion
steady
(60
oil
retention
(~
99.9%).
filtration
performance
other
commercial
evaluated.
Water Science & Technology,
Год журнала:
2025,
Номер
91(5), С. 453 - 468
Опубликована: Фев. 28, 2025
ABSTRACT
Performance
modeling
of
wastewater
treatment
systems
has
now
become
an
attractive
area
investigation
for
the
design,
analysis,
and
optimization
operations.
Mathematical
membrane
bioreactor
(MBR)
is
a
powerful
tool
predicting
effluent
quality.
In
this
study,
coupled
with
filtration
process
was
employed
to
treat
municipal
wastewater.
An
experimental
design
based
on
response
surface
methodology
(RSM)
applied
investigate
effects
operating
conditions,
such
as
hydraulic
retention
time
(HRT),
aeration
rate
(AR),
transmembrane
pressure
(TMP),
removal
efficiencies
chemical
oxygen
demand
(COD),
total
suspended
solids
(TSS),
nitrogen
(TN).
The
results
demonstrated
strong
agreement
between
data
model
predictions.
Furthermore,
RSM
display
parameters
their
interactive
pollution
removal.
maximum
efficiency
achieved,
exhibiting
95%
COD,
99.7%
TSS,
93%
TN.
These
findings
provide
effective
use
statistical
enhance
MBR
performance,
achieving
sustainable
energy-efficient
conditions.
Polymer Composites,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 16, 2025
Abstract
Hollow
fiber
membranes
(HFMs)
offer
a
remarkable
surface
area‐to‐volume
ratio
that
enables
extremely
effective
mass
transfer
processes
for
filtering
molecules
or
ions
according
to
intrinsic
characteristics
like
size.
The
main
weak
point
of
the
HFMs
is
their
low
hoop
and
axial
strength
under
internal
pressure
during
fluid
passage.
In
present
study,
bursting
behavior
braid‐reinforced
polyether
sulfone
hollow
fibrous‐structured
composites
was
investigated,
numerically
experimentally.
For
this
purpose,
tubular
braids
with
different
structures
were
produced
used
as
reinforcement
HFMs.
Nylon
6
PET
yarns
count
200
Den
produce
by
24‐Carrier
braiding
machine.
experimental
numerical
results
showed
structural
parameters
braid
can
significantly
affect
composites,
such
samples
higher
frequency
undergo
larger
stresses.
maximum
minimum
Mises'
stresses
are
4427
2434
kPa,
respectively,
belong
P‐9
N‐7
samples,
respectively.
addition,
also
exhibited
2855
2625
Furthermore,
types
occur
in
pressure,
number
type
bursts
depending
on
thebraids.
Highlights
Bursting
PES
investigated
numerically.
Braid
HFMs'
behavior.
Higher
experience
affecting
integrity.
Maximum
Mises
kPa
recorded.
Polymers,
Год журнала:
2023,
Номер
15(22), С. 4388 - 4388
Опубликована: Ноя. 12, 2023
Layered
double
hydroxides
(LDHs)
with
their
unique
structural
chemistry
create
opportunities
to
be
modified
polymers,
making
different
nanocomposites.
In
the
current
research,
a
novel
PET-PAN
embedded
Mg-AI-LDH-PVA
nanocomposite
membrane
was
fabricated
through
electrospinning.
SEM,
EDX,
FTIR,
XRD,
and
AFM
were
carried
out
investigate
structure
morphology
of
membrane.
The
characterization
optimized
showed
beadless,
smooth
nanofiber
diameter
695
nm.
water
contact
angle
tensile
strength
16°
1.4
Mpa,
respectively,
showing
an
increase
in
hydrophilicity
stability
by
addition
Mg-Al-LDH-PVA.
To
evaluate
adsorption
performance
membrane,
operating
parameters
achieved
for
Cr(VI)
methyl
orange
at
pH
2.0
4.0,
including
time,
adsorbate
dose,
pollutant
concentration.
data
removal
68%
80%
orange,
respectively.
process
followed
Langmuir
isotherm
model
that
fit
well
pseudo-2nd
order
kinetics
R2
values
0.97
0.99,
recycling
results
membrane’s
up
five
cycles.
developed
can
used
efficient
pollutants
from
wastewater.
Molecular Systems Design & Engineering,
Год журнала:
2023,
Номер
8(7), С. 911 - 921
Опубликована: Янв. 1, 2023
The
state-of-the-art
organic
composite
nanofibers
have
advantages
due
to
their
low
cost,
mechanical
flexibility,
light
weight
and
electrical
conductivity.
Crystalline-to-amorphous
transition
carbon-oxygen
interactions
are
observed
with
addition
of
carbon
nanotubes.
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(4), С. 2392 - 2404
Опубликована: Фев. 12, 2024
Poly(N-isopropylacrylamide)
(PNIPAM)
chain
with
catechol
end
group
was
designed
and
successfully
synthesized
by
a
reversible
addition–fragmentation
transfer
(RAFT)
procedure,
then,
even
via
simple
one-step
soaking
method,
it
could
be
firmly
grafted
to
many
different
substrates
(e.g.,
stainless-steel
mesh,
nylon
microfiltration
membrane,
an
Al
plate,
glass).
Moreover,
after
the
anchoring,
formed
thin
uniform
coating
of
PNIPAM
onto
surfaces
mesh
membrane
would
endow
valuable
thermo-driven
controllable
separation
ability
for
oil–water
mixtures
emulsions,
respectively.
And
below
PNIPAM's
lower
critical
solution
temperature
(LCST)
(34
°C),
membranes
exhibited
hydrophilicity
underwater
oleophobicity
thus
can
used
"light
oil"/water
mixture
O/W
emulsion
through
"removing
water"
process;
meanwhile,
above
its
LCST,
show
opposite
properties
(hydrophobicity
oleophilicity)
are
separate
"heavy
W/O
oil"
process.
In
addition,
without
changing
morphologies
pore
sizes
substrates,
gave
excellent
performances
such
as
recyclability,
high
efficiency
ability.
So,
facile
effective
strategy
presented
in
this
work
that
is
suitable
coupling
various
also
supply
inspiration
effect
conjunction
heterogeneous
materials
other
functional
polymers
substrates.
