Investigating the role of sodium persulfate as a hydroxyl radical initiator in Catalyzing zeolite synthesis from fly ash
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 160714 - 160714
Опубликована: Фев. 1, 2025
Язык: Английский
Strategies for Strontium Recovery/Elimination from Various Sources
Processes,
Год журнала:
2025,
Номер
13(3), С. 807 - 807
Опубликована: Март 10, 2025
Not
having
the
same
grade
of
popularity
as
other
metals
like
rare
earth
elements,
gold,
copper,
etc.,
strontium
is
a
chemical
element
with
wide
uses
in
daily
life,
which
why
it
appears
EU
2023
list
Critical
Raw
Materials.
Among
sources
(with
celestine
serving
raw
material)
used
to
recover
element,
recycling
some
Sr-bearing
secondary
wastes
under
consideration,
and
also
worth
mentioning
interest
removal
from
radioactive
effluents.
To
reach
these
goals,
several
technological
alternatives
are
being
proposed,
most
widely
adsorption
or
one
its
isotopes
on
solid
materials.
The
present
work
reviews
recent
advances
(for
2024)
utilization
diverse
technologies,
including
leaching,
adsorption,
liquid–liquid
extraction,
recovery/elimination
Sr(II)
common
90Sr
85Sr
radionuclides
different
liquid
wastes.
While
membrane
technologies
useful
for
treating
Sr-diluted
solutions
(in
mg/L
order),
extraction
more
suitable
treatment
Sr-concentrated
g/L
order).
Язык: Английский
Effect of Industrial Byproduct Gypsum on the Mechanical Properties and Stabilization of Hazardous Elements of Cementitious Materials: A Review
Materials,
Год журнала:
2024,
Номер
17(17), С. 4183 - 4183
Опубликована: Авг. 23, 2024
Industrial
byproduct
gypsum
(BPG)
is
a
secondary
product
that
mainly
composed
of
calcium
sulfate
discharged
during
industrial
production.
BPG
primarily
consists
desulfurized
gypsum,
phosphogypsum,
and
titanium
which
account
for
88%
the
total
in
China.
The
large-scale
utilization
these
three
types
solid
waste
crucial
safe
disposal
BPG.
contains
various
impurities
harmful
elements,
limiting
its
applications.
continuous
accumulation
poses
serious
threat
to
safety
environment.
Based
on
literature
review
(2021-2023),
it
was
found
52%
used
preparation
cementitious
materials,
addition
results
an
average
improvement
7-30%
mechanical
properties
materials.
Moreover,
has
positive
impact
immobilization
hazardous
elements
raw
Therefore,
materials
beneficial
disposal.
This
study
reviews
effects
mechanisms
solidification
elements.
Most
importantly,
reveals
positively
influences
hydration
activity
silica-alumina-based
(such
as
steel
slag
blast
furnace
slag)
alkaline
carbide
red
mud).
improves
proportion
cement
reduces
production
costs
carbon
emissions.
Finally,
this
article
summarizes
proposes
application
+
silica-alumina
solid-waste-based
expected
realize
new
type
green
ecological
chain
joint
multiple
wastes
promote
low-carbon
sustainable
development
clusters.
Язык: Английский
Recent Progress on the Synthesis and Applications of Zeolites from Industrial Solid Wastes
Catalysts,
Год журнала:
2024,
Номер
14(10), С. 734 - 734
Опубликована: Окт. 20, 2024
Zeolites
have
been
increasingly
applied
in
various
fields
such
as
energy
conversion,
environmental
remediation,
chemical
production,
and
so
on,
being
used
membranes,
catalysts,
supports
due
to
their
large
specific
areas
strong
gas
adsorption.
And,
developing
low-cost
strategies
for
the
preparation
of
zeolites
has
attracted
extensive
attention
researchers.
Coal
fly
ash,
waste
glass,
discard
zeolites,
slags
are
typical
industrial
wastes
rich
Si
Al,
indicating
that
these
can
be
utilized
alternative
raw
materials
zeolite
synthesis.
Firstly,
composition
properties
summarized.
Then,
involved
synthesizing
different
from
discussed.
In
addition,
applications
comprehensively
reviewed.
Язык: Английский
Damage mechanism of airport pavement concrete undergoing freeze-thaw: The coupling effects of low-concentration deicers and carbonation
Construction and Building Materials,
Год журнала:
2025,
Номер
467, С. 140365 - 140365
Опубликована: Фев. 15, 2025
Язык: Английский
Fly Ash Characterisation for Rare Earth Elements (REEs) Beneficiation in Türkiye
Journal of Polytechnic,
Год журнала:
2024,
Номер
unknown, С. 1 - 1
Опубликована: Окт. 11, 2024
The
rapid
advancement
of
technology
is
continuously
increasing
the
need
for
rare
earth
elements
(REEs).
These
strategically
important
metals
are
mainly
sourced
from
primary
resources,
and
then
secondary
resources
explored.
Despite
significant
issues
caused
by
post
products,
fly
ash
coal-fired
power
plants
can
be
considered
a
source
due
to
its
high
REE
content.
This
study
conducted
characterization
analyses
six
samples
in
Türkiye
investigated
potential
enrichment.
ashes
were
analysed
using
atomic
absorption
spectrophotometry
(AAS),
inductively
coupled
plasma
mass
spectrometry
(ICP-MS),
X-ray
fluorescence
(XRF),
diffraction
(XRD)
methods.
enrichment
REEs
two
selected
was
examined.
Total
values
found
168.9
244.9
ppm.
results
indicate
that
utilized
as
REEs.
Moreover,
application
bioleaching
both
an
economically
viable
environmentally
friendly
alternative.
In
this
context,
concluded
have
recovery,
method
contribute
sustainable
use
existing
resources.
also
validates
findings
comparing
them
with
literature.
Язык: Английский