Metals,
Год журнала:
2024,
Номер
14(11), С. 1231 - 1231
Опубликована: Окт. 28, 2024
The
mining
of
molybdenum
and
uranium
ores
inevitably
results
in
the
generation
large
volumes
wastewater
containing
low
concentrations
metals,
which
poses
significant
threats
to
environment.
This
study
presents
a
novel
precipitation–flotation
process
for
simultaneous
separation
from
wastewater.
A
systematic
investigation
was
conducted
on
impacts
type
precipitant,
flotation
reagent
type,
parameters
experimental
results.
Ferric
salt
served
better
as
precipitant
than
aluminum
humic
acid
did,
sodium
dodecyl
sulfate
(SDS)
more
suitable
benzene
sulfonate
acting
surfactant
foaming
agent.
Under
specific
conditions,
including
pH
6.6,
an
Fe3+
dosage
0.6
mmol·L−1,
SDS
40
mg·L−1,
air
flow
rate
25
mL·min−1,
time
10
min,
removal
efficiencies
reached
96.6%
93.6%,
respectively.
After
flotation,
concentration,
chemical
oxygen
demand,
turbidity
treated
water
all
meet
emission
standards.
Furthermore,
metal
mechanisms,
particle
size
distribution,
functional
group
structure,
surface
element
composition,
microstructure,
were
elucidated
basis
characterization
products.
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 28, 2024
Abstract
Metal–organic
frameworks
(MOFs)
and
covalent–organic
(COFs)‐based
aerogels
are
garnering
significant
attention
owing
to
their
unique
chemical
structural
properties.
These
materials
harmoniously
combine
the
advantages
of
MOFs
COFs—such
as
high
surface
area,
customizable
porosity,
varied
functionality—with
lightweight
structured
porosity
characteristic
aerogels.
This
combination
opens
up
new
avenues
for
advanced
applications
in
fields
where
material
efficiency
enhanced
functionality
critical.
review
provides
a
comparative
overview
synthetic
strategies
utilized
produce
pristine
MOF/COF
well
MOF/COF‐based
hybrid
aerogels,
which
functionalized
with
molecular
precursors
nanoscale
materials.
The
versatility
these
positions
them
promising
candidates
addressing
complex
challenges
environmental
remediation,
energy
storage
conversion,
sustainable
water‐energy
technologies,
separations.
Furthermore,
this
study
discusses
current
future
prospects
related
synthesis
techniques
Arabian Journal of Chemistry,
Год журнала:
2024,
Номер
17(5), С. 105746 - 105746
Опубликована: Март 20, 2024
Heavy
metals
in
water
bodies
pose
a
significant
threat
to
both
ecology
and
human
well-being.
Therefore,
the
development
of
green
sustainable
adsorbents
for
remediation
is
essential.
This
study
presents
crosslinked
chitosan
composite
structure
with
multiple
layers,
which
was
generated
by
adjusting
ratio
wheat
straw–derived
magnetic
biochar
composite.
The
adsorption
behavior
under
different
conditions
revealed
varying
Cr(VI)
concentration,
pH,
temperature.
exhibited
maximum
121.8
mg
g−1
water,
11.9
times
higher
than
that
biochar.
It
maintained
residual
performance
78.6
%
after
seven
cycles,
most
chitosan-based
composites.
reusability
improved
via
hydrochloric
acid
protonation
functional
groups
layer-by-layer
exposure
structure.
provides
new
insights
into
application
composites
derived
from
straw,
an
agricultural
waste,
as
adsorbents.
