ACS Applied Polymer Materials,
Journal Year:
2024,
Volume and Issue:
6(17), P. 10368 - 10379
Published: Sept. 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
ACS ES&T Engineering,
Journal Year:
2023,
Volume and Issue:
3(10), P. 1661 - 1673
Published: Aug. 30, 2023
Numerous
traditional
methods
have
been
applied
to
extracting
manganese
from
electrolytic
residue
(EMR).
However,
most
of
them
focused
on
the
recovery
water-soluble
EMR,
while
insoluble
manganese,
whose
content
is
usually
high
in
was
generally
ignored.
Herein,
EMR
systematically
investigated
by
a
natural
pyrite-assisted
mechanochemical
method.
The
efficiency
exceeded
86%,
and
leaching
iron
lower
than
1%
under
optimal
conditions
(the
pyrite/EMR
mass
ratio
4%
treatment
at
300–500
rpm
for
120
min).
Toxicity
characteristic
procedure
experiments
showed
that
after
concentration
decreased
more
12
times,
ammonia
nitrogen
27
which
met
regulatory
discharge
limit
(GB/T
8978-1996).
Tescan
integrated
mineral
analyzer
analysis
directly
confirmed
Mn(IV)
treated
completely
reduced
soluble
Mn(II),
solidified
forms
Fe–S-(Si–Al–O)
pyrrhotite.
A
potential
mechanism
could
be
encapsulated
matrix
exposed
particle
surface
reaction;
whereafter,
redox
reaction
between
pyrite
facilitated
generated
crystal
defects
surfaces
with
dangling
bonds
action.
This
study
provides
direction
resource
utilization
also
expands
theoretical
basis
exploring
reduction
