Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
59(1), P. 902 - 912
Published: Dec. 31, 2024
Thin-film
composite
(TFC)
membrane
has
been
extensively
utilized
and
investigated
for
its
excellent
properties.
Herein,
we
have
constructed
an
active
layer
(AL)
containing
cave-like
structures
utilizing
large
meniscus
interface.
Furthermore,
the
impact
of
interface
structure
on
growth
process,
morphology,
effective
surface
area
AL
fully
explored
with
assistance
sodium
dodecyl
benzenesulfonate
(SDBS).
The
SDBS-induced
nanobubbles
continuously
facilitated
migration
top
toward
upper
space.
During
this
sunken
in
initially
exhibited
increase
then
a
decrease.
Additionally,
larger
significantly
enhanced
delayed
rise
structures.
Therefore,
TFC
membrane,
substrate
pore
size
1.00
μm
assisted
by
0.30
mM
SDBS,
remarkable
flux
enhancement
(>63%)
reduced
reverse
salt
(>35%)
forward
osmosis
system.
Moreover,
roughness
factor
was
introduced
to
directly
quantify
area,
which
had
good
correlation
water
flux.
Our
findings
demonstrated
significant
potential
substrates
overcome
inherent
limitations
membrane.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 3, 2025
Thin-film
composite
polyamide
(TFC
PA)
membranes
hold
promise
for
energy-efficient
liquid
separation,
but
achieving
high
permeance
and
precise
separation
membrane
via
a
facile
approach
that
is
compatible
with
present
manufacturing
line
remains
great
challenge.
Herein,
we
demonstrate
the
use
of
lignin
alkali
(LA)
derived
from
waste
paper
pulp
as
an
aqueous
phase
additive
to
regulate
interfacial
polymerization
(IP)
process
performance
nanofiltration
(NF)
membrane.
Various
characterizations
molecular
dynamics
simulations
revealed
LA
can
promote
diffusion
partition
monomer
piperazine
(PIP)
molecules
into
organic
their
uniform
dispersion
on
substrate,
accelerating
IP
reaction
promoting
greater
instabilities,
thus
endowing
formation
TFC
NF
ultrathin,
highly
cross-linked,
crumpled
PA
layer.
The
optimal
exhibited
remarkable
water
26.0
L
m-2
h-1
bar-1
Cl-/SO42-
selectivity
191.0,
which
superior
state-of-the-art
membranes.
This
study
provides
cost-effective
scalable
strategy
fabricating
ultra-selective
permeable
ion-ion
small
compounds
removal.
Achieving
in
thin-film
challenging.
Here,
authors
Water Research,
Journal Year:
2025,
Volume and Issue:
281, P. 123678 - 123678
Published: April 24, 2025
The
application
of
nanofiltration
(NF)
membranes
for
resource
recovery,
particularly
lithium
(Li)
extraction
from
high
magnesium
(Mg)
brines,
is
a
rapidly
growing
research
area.
However,
the
trade-off
between
Li+
purity
and
recovery
remains
challenging.
In
our
study,
we
extend
widely
adopted
Donnan
Steric
Pore
Model
with
Dielectric
Exclusion
(DSPM-DE)
to
analyze
membrane
structure-property-performance
relationships
at
process
scale.
For
first
time,
quantify
how
intrinsic
parameters
(e.g.,
pore
size,
effective
thickness,
charge
density)
affect
under
module-scale
processes.
Under
this
framework,
demonstrate
that
electrically
neutral
positively
charged
outperform
negatively
membranes,
albeit
cost
slightly
higher
required
hydraulic
pressure.
Notably,
smaller
size
yet
water
permeance
(40-80
L
m-2
h-1
bar-1)
are
preferred,
which
could
simultaneously
achieve
excellent
(∼98
%)
(∼93
in
single-pass
process,
effectively
overcoming
purity-recovery
correlation.
We
further
negative
rejection
plays
crucial
role
correlation
by
significantly
increasing
recovery.
Nevertheless,
poor
system
flux
distribution
inadvertently
observed
regions
where
strong
occurs,
highlighting
need
careful
consideration
balance
stability
performances.
Our
study
identifies
critical
achieving
optimal
performance
scale,
offering
fundamental
insights
designing
high-performance
Water Research,
Journal Year:
2025,
Volume and Issue:
283, P. 123852 - 123852
Published: May 18, 2025
Organic
micropollutants
(OMPs)
present
considerable
threats
to
both
human
health
and
the
environment.
Traditional
thin
film
composite
(TFC)
nanofiltration
(NF)
polyamide
membranes,
despite
their
high
water
permeance
salt
rejection
capabilities,
often
fail
effectively
remove
OMPs.
This
study
addresses
this
limitation
by
incorporating
two-dimensional
(2D)
zinc(II)
tetrakis(4-carboxy-phenyl)porphyrin
(Zn-TCPP)
metal-organic
framework
(MOF)
nanosheets
as
interlayers
in
TFC
membranes
(TFNi),
using
a
polyethylene
glycol
(PEG)
assisted
exfoliation
technique
mitigate
issues
of
nanosheet
restacking
aggregation.
The
uniformly
distributed
MOF
significantly
improved
pure
from
10.6
32.1
L
m⁻²
h⁻¹
bar⁻¹
while
maintaining
97.0%
towards
Na₂SO₄.
Moreover,
optimized
membrane
showed
significant
improvements
OMP
removal,
attributed
increased
negative
charge
greater
hydrophilicity
layer.
These
findings
highlight
potential
2D
developing
high-performance
for
effective
removal
reuse.
