ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(17), С. 10368 - 10379
Опубликована: Сен. 3, 2024
In
this
work,
a
germanium
ion-imprinted
polymer
(Ge-IIP)
based
on
α-bromobutyric
intercalation-modified
hydrotalcite
was
synthesized
by
atom
transfer
radical
polymerization
and
applied
for
the
capture
of
ions
from
wastewater.
particular,
layered
as
skeleton
support
induced
in
situ
Ge-IIPs
to
form
graded
pores,
an
interlayer
also
used
initiator
induce
graft
functional
monomers
3-dihydroxypropyl-2-acrylate
strong
coordination
cavities
ions.
Batch
experiment
results
showed
that
could
effectively
at
pH
value
3,
maximum
adsorption
capacity
up
55.18
mg·g–1.
The
kinetics
isotherms
indicated
consistent
with
pseudo-second-order
kinetic
model
Freundlich
isotherm
model.
distribution
coefficient
values
Ge(IV)
coexisting
metal
ion
solution
were
high
25
231.36
mL·g–1,
indicating
significant
selectivity.
addition,
good
reusability,
uptake
rate
still
reach
98.45%
after
5
cycles.
Furthermore,
density
theory
calculation
efficient
selective
may
be
attributed
exchange
surface
complexation
between
abundance
o-hydroxyl
groups
Ge-IIP
structure.
excellent
salt
tolerance
selectivity
provide
possibility
its
practical
application
recovery
Though
nowadays
germanium
do
not
reach
the
range
of
popularity
than
other
metals,
i.e.
rare
earth
elements,
its
utility
in
target
industries
makes
it
also
a
strategic
metal.
can
be
find
series
raw
materials,
principal
source
for
recovery
is
from
secondary
wastes
zinc
industry,
and
also,
recycle
germanium-bearing
waste
materials
becoming
interest.
In
this
recovery,
Hydrometallurgy
performing
key
role
to
successful
achievement
goal.
The
present
work
reviews
most
recent
applications
(2023
2024
years)
hydrometallurgical
operations
on
different
solid
liquid
sources.
Polymers,
Год журнала:
2025,
Номер
17(4), С. 487 - 487
Опубликована: Фев. 13, 2025
The
compound
triclosan
(TCS)
is
widely
found
in
personal
hygiene
products,
and
when
present
effluents,
it
can
cause
problems
to
human
health,
such
as
endocrine
disruption,
intestinal
problems,
liver
tumors.
A
sustainable
alternative
for
the
removal
of
TCS
use
adsorbent
biopolymers,
which
are
low-cost,
renewable,
biodegradable.
One
most
used
biopolymers
chitosan
(CHT),
has
excellent
adsorptive
properties
due
its
functional
groups.
In
this
context,
work
evaluated,
through
computational
simulations,
interaction
molecule
with
CHT.
frontier
molecular
orbitals
electrostatic
potential
show
that
different
forms
interactions
occur,
thus,
five
complexes
were
shown
be
stable
after
optimization
interactions.
bond
lengths
ranged
from
1.839
Å
3.606
formed
mainly
by
hydrogen
bonds
H...Cl
binding
energy
(∆EBind)
allowed
us
infer
adsorption
occurred,
∆EBind
<
0,
values
-4.14
kcal
mol-1
-17.74
mol-1.
thermodynamic
demonstrated
process
was
exothermic
two
spontaneous:
TCS...CHTiii
ΔG=
-3.14
TCS...CHTiv
-2.82
topological
parameters
revealed
almost
all
between
CHT
electrostatic,
non-covalent
analysis
confirmed
presence
van
der
Waals
complexes.
Thus,
study
showed
efficient
treatment
effluents
containing
emerging
contaminant
triclosan.
Metals,
Год журнала:
2024,
Номер
14(5), С. 559 - 559
Опубликована: Май 9, 2024
Though
nowadays
germanium
does
not
reach
the
range
of
popularity
other
metals,
i.e.,
rare
earth
elements,
its
utility
in
target
industries
makes
it
a
strategic
metal.
can
be
found
series
raw
materials,
principal
source
for
recovery
is
from
secondary
wastes
zinc
industry;
also,
recyclability
germanium-bearing
waste
materials
becoming
interest.
In
this
and
due
to
size
because
diffusion
reaction
are
considered,
hydrometallurgy
performs
key
role
achieving
goal.
The
present
work
reviews
most
recent
applications
(2023
2024
years)
hydrometallurgical
operations
on
different
solid
liquid
sources.
