The
rare-earth
industry
plays
a
promising
role
in
the
promotion
of
low-carbon
technologies,
which
are
anticipated
as
foremost
nominees
for
development
green
civilization.
Among
valuable
elements,
neodymium
(Nd)
is
one
extensively
diffused
metals
production
high-tech
and
clean-energy
equipment
due
to
its
strong
light
magnetic
properties.
China
has
already
acquired
principal
place
Nd
supply
global
market,
becoming
successful
competitor
with
higher
level
utilization
capacity
country
face
growing
demand.
Previous
literature
provided
some
information
on
substance
flow
few
recent
years;
however,
they
often
fail
interpret
better
penetration
about
current
Chinese
position
industry.
Therefore,
this
study
attempts
give
detailed
examination
emergence
inside
framework
special
emphasis
challenges
prospective.
As
frontrunner
production,
responsible
over
95%
supply,
having
good
market
also.
It
important
note
that
recycling
crucial
reducing
carbon
emissions
by
lessening
demand
raw
material
extraction
supporting
growth
technologies.
Finally,
it
vital
strengthen
country's
regulations
policies
minimize
negative
environmental
consequences
protect
societal
values.
ACS Earth and Space Chemistry,
Journal Year:
2024,
Volume and Issue:
8(5), P. 1048 - 1061
Published: April 25, 2024
Global
efforts
to
build
a
net-zero
economy
and
the
irreplaceable
roles
of
rare-earth
elements
(REEs)
in
low-carbon
technologies
urge
understanding
REE
occurrence
natural
deposits,
discovery
alternative
resources,
development
green
extraction
technologies.
Advancement
these
directions
requires
comprehensive
knowledge
on
geochemical
behaviors
REEs
presence
naturally
prevalent
organic
ligands,
yet
much
remains
unknown
about
ligand-mediated
mobilization/fractionation
related
mechanisms.
Herein,
we
investigated
mobilization
from
representative
host
minerals
induced
by
three
ligands:
oxalate,
citrate,
siderophore
desferrioxamine
B
(DFOB).
Reaction
pH
conditions
were
selected
isolate
ligand-complexation
effect
versus
proton
dissolution.
The
ligands
displayed
varied
impacts,
with
dissolution
remarkably
enhanced
mildly
promoted
DFOB,
showing
divergent
effects
depending
mineral
type
reaction
pH.
Thermodynamic
modeling
indicates
dominant
REE–ligand
complexes
under
studied
suggests
ligand-promoted
be
mechanism,
consistent
experimental
data.
In
addition,
mediated
exhibited
distinct
fractionation
toward
heavy
(HREE)
enrichment
solution
phase,
which
can
mainly
attributed
formation
thermodynamically
predicted
more
stable
HREE–ligand
complexes.
combined
thermodynamic
approach
provides
framework
for
systematic
investigation
mobilization,
distribution,
systems
design
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 22, 2024
Global
economic
growth
and
population
expansion
contribute
to
heightened
solid
waste
production,
creating
environmental
challenges.
Sustainable
management,
notably
incineration,
is
crucial
for
volume
reduction,
energy
recovery,
resource
utilization.
The
escalating
reliance
on
incineration
underlines
the
critical
necessity
detailed
characterization.
Our
study
focuses
industrial
hazardous
residues
(IHWA)
provides
essential
insights
into
their
mineral
chemical
composition
employing
various
analytical
techniques,
including
sieve
analyses,
laser
diffraction,
X-ray
powder
FT-IR
spectroscopy,
SEM-EDS,
leaching
behavior,
thus
contributing
filling
a
gap
in
current
knowledge.
majority
of
IHWA
particles
(41%)
were
smaller
than
500
μm,
with
significant
portion
(34%)
200–400
μm
range,
which
increases
potential.
Toxic
elements,
Cr,
Cu,
Zn,
detected
at
elevated
levels,
Zn
concentrations
exceeding
EU
soil
limits
by
over
250
times,
what
underscore
risks
demand
proper
treatment.
complexity
bonds
within
sample
indicates
thorough
assessment
understand
potential
impacts
ecosystem.
Sequential
extraction
revealed
that
(90.32%),
Cd
(64.22%),
Hg
predominantly
found
mobile
fractions,
indicating
high
hazards.
In
contrast,
elements
like
Pb
primarily
associated
immobile
fractions.
Mineral
phases
such
as
calcite
halite
dissolved
during
first
step,
while
other
crystalline
phases,
quartz
magnetite,
remained
stable
throughout
process.
stability
all
results
low
indicate
some
could
suppress
efficiency
elements.
Chemistry - A European Journal,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 11, 2024
While
rare
earth
elements
(REEs)
are
essential
for
modern
technology,
their
production
methods
raise
concerns
agriculture.
Researchers
now
exploring
ways
to
control
and
recycle
REEs
pollution,
aiming
minimize
agricultural
impacts
potentially
even
develop
utilize
these
improved
crop
yields.
Regarding
this
issue,
a
new
type
of
pillar[5]arene
polymer
(Pol-P[5]-BTZP)
has
been
designed
synthesized
by
click
reaction
enhance
the
efficiency
adsorption
recovery
metals.
This
incorporates
unique
structure
2,6-di-1,2,3-triazolyl-pyridine.
The
results
various
analyses
revealed
that
Pol-P[5]-BTZP
exhibits
excellent
thermal
stability,
high
specific
surface
area,
well-distributed
networks
micropores
mesoporous
structures.
capacity
Tm
Environmental Monitoring and Assessment,
Journal Year:
2024,
Volume and Issue:
196(12)
Published: Nov. 7, 2024
Solid
waste
incineration
(SWI)
can
release
numerous
air
pollutants
although
the
geographic
reach
of
emissions
is
not
routinely
monitored.
While
many
studies
use
moss
and
lichens
for
biomonitoring
trace
elements,
including
around
SWIs,
few
investigate
complex,
multi-element
footprint
expected
from
SWI
emissions.
This
study
develops
using
native
as
a
screening
tool
while
also
informing
community
concerns
about
an
aging
incinerator
in
rural
Oregon,
USA.
Trained
volunteers
helped
collect
36
composite
samples
epiphytic
(Orthotrichum
s.l.)
along
32-km
transect
SWI.
We
used
ICP-MS
to
measure
40
elements
moss,
14
rare
earth
(REEs)
previously
unexplored
compared
elemental
signatures
with
profile
modeled
relationships
between
element
concentrations
distance
facility
nonparametric
regression.
The
chemical
pointed
source,
potentially
through
both
stack
fugitive
dust
strongest
models
described
farther-dispersing
mercury
cadmium
(xR
