Environmental Science & Technology,
Год журнала:
2022,
Номер
56(19), С. 14069 - 14079
Опубликована: Сен. 20, 2022
Nanofiltration
(NF)
membranes
are
playing
increasingly
crucial
roles
in
addressing
emerging
environmental
challenges
by
precise
separation,
yet
understanding
of
the
selective
transport
mechanism
is
still
limited.
In
this
work,
underlying
mechanisms
governing
selectivity
polyamide
NF
membrane
were
elucidated
using
a
series
monovalent
cations
with
minor
hydrated
radius
difference.
The
observed
single
cation
was
neither
correlated
nor
hydration
energy,
which
could
not
be
explained
widely
accepted
model
or
ion
dehydration
theory.
Herein,
we
employed
an
Arrhenius
approach
combined
Monte
Carlo
simulation
to
unravel
that
transmembrane
process
would
dominated
its
pairing
anion,
if
anion
has
greater
energy
barrier,
due
constraint
anion-cation
coupling
transport.
Molecular
dynamics
simulations
further
revealed
distinct
structure
primary
origin
barrier
difference
cations.
having
larger
incompressible
after
partial
through
subnanopores
induce
more
significant
ion-membrane
interaction
and
consequently
higher
barrier.
Moreover,
validate
our
proposed
mechanisms,
grafting
modification
toward
enlarging
dominant
ions
achieved
3-fold
enhancement
separation
efficiency.
Our
work
provides
insights
into
ionic
species
membranes.
Chemosphere,
Год журнала:
2023,
Номер
321, С. 138070 - 138070
Опубликована: Фев. 10, 2023
Given
that
surface
water
is
the
primary
supply
of
drinking
worldwide,
presence
natural
organic
matter
(NOM)
in
presents
difficulties
for
treatment
facilities.
During
disinfection
phase
process,
NOM
aids
creation
toxic
by-products
(DBPs).
This
problem
can
be
effectively
solved
using
nanofiltration
(NF)
membrane
method,
however
significantly
foul
NF
membranes,
degrading
separation
performance
and
integrity,
necessitating
development
fouling-resistant
membranes.
review
offers
a
thorough
analysis
removal
by
along
with
insights
into
operation,
mechanisms,
fouling,
its
controlling
variables.
In
light
engineering
materials
distinctive
features,
potential
surface-engineered
membranes
here
critically
assessed
impact
on
surface,
separation,
antifouling
qualities.
Case
studies
are
evaluated,
properties-to-performance
connections
established,
as
well
challenges,
trends,
predictions
field's
future.
The
effect
alteration
properties,
interactions
solutes
foulants,
applications
all
examined
detail.
Engineered
containing
zwitterionic
polymers
have
greatest
to
improve
permeance,
selectivity,
stability,
performance.
To
support
commercial
applications,
however,
related
material
production,
modification
techniques,
long-term
stability
must
promptly.
Fouling
resistant
would
critical
not
only
industry,
but
also
wide
range
developing
gas
liquid
separations.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(9), С. 4374 - 4399
Опубликована: Янв. 1, 2024
This
review
details
the
design
and
creation
of
ultrathin
polyamide
membranes
with
significant
enhancement
in
water
permeance
along
limitations
potential
strategies
to
empower
their
efficacy
ionic
molecular
separations.
Membranes,
Год журнала:
2024,
Номер
14(2), С. 52 - 52
Опубликована: Фев. 12, 2024
Membrane
technology
has
shown
a
promising
role
in
combating
water
scarcity,
globally
faced
challenge.
However,
the
disposal
of
end-of-life
membrane
modules
is
problematic
as
current
practices
include
incineration
and
landfills
their
final
fate.
In
addition,
increase
population
lifestyle
advancement
have
significantly
enhanced
waste
generation,
thus
overwhelming
exacerbating
environmental
repercussions
resource
scarcity.
These
are
neither
economically
nor
environmentally
sustainable.
Recycling
membranes
utilizing
recycled
material
for
manufacturing
seen
potential
approach
to
address
aforementioned
challenges.
Depending
on
physiochemical
conditions,
could
be
reutilized
similar,
upgraded,
downgraded
operations,
extending
lifespan
while
mitigating
impact
that
occurred
due
new
preparation
similar
purposes.
Likewise,
using
such
polystyrene,
polyethylene
terephthalate,
polyvinyl
chloride,
tire
rubber,
keratin,
cellulose
derivates
fabricating
can
enhance
sustainability.
This
study
advocates
supports
integration
sustainability
concepts
into
by
presenting
research
carried
out
this
area
rigorously
assessing
achieved
progress.
The
membranes’
recycling
fabrication
materials
special
interest
work.
Furthermore,
offers
guidance
future
endeavors
aimed
at
promoting
Environmental Science & Technology,
Год журнала:
2022,
Номер
56(22), С. 15220 - 15237
Опубликована: Ноя. 4, 2022
In
view
of
the
high
risks
brought
about
by
organic
micropollutants
(OMPs),
nanofiltration
(NF)
processes
have
been
playing
a
vital
role
in
advanced
water
and
wastewater
treatment,
owing
to
membrane
performance
rejection
OMPs,
permeation
water,
passage
mineral
salts.
Though
numerous
studies
devoted
evaluating
technically
enhancing
removing
various
trade-off
effect
between
permeance
water/OMP
selectivity
for
state-of-the-art
membranes
remains
far
from
being
understood.
Knowledge
this
is
significant
comparing
guiding
development
works
toward
cost-efficient
OMP
removal.
work,
we
comprehensively
assessed
88
NF
membranes,
commercialized
or
newly
developed,
based
on
their
data
published
literature.
The
effectiveness
underlying
mechanisms
modification
methods
tailoring
properties
turn
mainstream
polyamide
(PA)
thin-film
composite
(TFC)
were
quantitatively
analyzed.
was
demonstrated
abundant
both
experimental
measurements
machine
learning-based
prediction.
On
basis,
advancement
novel
benchmarked
upper-bound
revealed
commercial
lab-made
PA
membranes.
We
also
potentials
current
selectively
separating
OMPs
inorganic
salts
identified
future
research
perspectives
achieve
further
enhancement
removal
salt/OMP
