Processes,
Journal Year:
2024,
Volume and Issue:
12(12), P. 2879 - 2879
Published: Dec. 16, 2024
Hydrophobic
eutectic
solvents
(HES)
show
significant
promise
as
extractants
for
metal
ions.
At
their
current
stage
of
development,
however,
they
have
many
disadvantages,
such
high
costs,
limited
data
on
reusability
and,
often,
lower
extraction
efficiency
when
compared
with
traditional
systems.
This
study
investigates
the
physico-chemical
properties
five
HES
formulations
based
1-octanol
in
combination
camphor,
2′-hydroxypropiophenone,
menthol,
1-octanoic
acid,
and
thymol.
The
1-octanol/camphor
exhibited
substantially
higher
Fe(III)
ions
than
a
solution
toluene
at
same
concentration.
Furthermore,
it
showed
stability
used
mixer-settler
type
extractor.
achieved
rapid
re-extraction
rate,
phase
contact
time
reduced
to
just
2
min,
without
loss
efficiency.
Using
supported
liquid
membrane
method,
proposed
Oct/Cam
enabled
threefold
concentration
iron
raffinate
under
continuous
operation,
confirming
its
potential
reusability.
The
peculiar
physicochemical
features
of
deep
eutectic
solvents
(DESs),
in
particular
their
tunability,
make
them
ideal
media
for
various
applications.
Despite
ability
to
solubilize
metal
oxides,
use
as
rust
removers
from
valuable
substrates
has
not
yet
been
thoroughly
investigated.
In
this
study
we
chosen
three
known
DESs,
consisting
choline
chloride
and
acetic,
oxalic
or
citric
acid
evaluating
remove
corrosion
products
a
cellulose-based
material
linen
fabric
two
different
lithotypes,
travertine
granite.
artificial
staining
was
achieved
by
placing
rusty
iron
grid
on
surfaces.
DESs
were
applied
means
cellulose
poultice
the
fabrics,
while
rusted
stone
surfaces
with
cotton
swab.
Macro-
microscopic
observations,
colorimetry
SEM/EDS
analysis
employed
ascertain
cleaning
effectiveness
absence
side
effects
samples
after
treatment.
Oxalic
acid-based
DES
capable
removing
stains
both
samples,
chloride/citric
effective
only
specimens.
results
suggest
new
practical
application
elimination
lithic
cellulosic
precious
artistic
value.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
A
nonflammable
fluorine-rich
deep
eutectic
electrolyte
(DEE)
promotes
LiF-rich
and
Li
3
N-rich
robust
interphases
on
both
lithium
metal
anode
high-voltage
cathode
sides,
endowing
4.5
V
Li-metal
batteries
with
exceptional
cycling
stability.
Processes,
Journal Year:
2024,
Volume and Issue:
12(12), P. 2879 - 2879
Published: Dec. 16, 2024
Hydrophobic
eutectic
solvents
(HES)
show
significant
promise
as
extractants
for
metal
ions.
At
their
current
stage
of
development,
however,
they
have
many
disadvantages,
such
high
costs,
limited
data
on
reusability
and,
often,
lower
extraction
efficiency
when
compared
with
traditional
systems.
This
study
investigates
the
physico-chemical
properties
five
HES
formulations
based
1-octanol
in
combination
camphor,
2′-hydroxypropiophenone,
menthol,
1-octanoic
acid,
and
thymol.
The
1-octanol/camphor
exhibited
substantially
higher
Fe(III)
ions
than
a
solution
toluene
at
same
concentration.
Furthermore,
it
showed
stability
used
mixer-settler
type
extractor.
achieved
rapid
re-extraction
rate,
phase
contact
time
reduced
to
just
2
min,
without
loss
efficiency.
Using
supported
liquid
membrane
method,
proposed
Oct/Cam
enabled
threefold
concentration
iron
raffinate
under
continuous
operation,
confirming
its
potential
reusability.
