bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 10, 2024
Abstract
The
transition
to
a
sustainable
energy
economy
will
require
an
enormous
increase
in
the
supply
of
rare
earth
elements
(REE).
Bioleaching
offers
promising
alternative
conventional
hydrometallurgical
methods
for
REE
extraction
from
low-grade
ores.
However,
exploiting
this
potential
remains
challenging
due
large
gaps
our
understanding
genetics
involved,
and
inadequate
biological
tools
address
them.
We
generated
highly
non-redundant
whole
genome
knockout
collection
bioleaching
microbe
Gluconobacter
oxydans
B58,
reducing
redundancy
by
85%
compared
previous
best
collection.
This
new
was
directly
screened
neodymium
synthetic
monazite
powder,
identifying
89
genes
important
bioleaching,
68
which
have
not
previously
been
associated
with
mechanism.
conducted
bench-scale
experiments
validate
efficiency
strains:
8
demonstrated
significant
increases
up
111%
(
G.
δ
GO_1598
,
disruption
gene
encoding
orotate
phosphoribosyltransferase
enzyme
PyrE),
one
strain
significantly
reduced
it
97%
(δ
GO_1096
GTP-binding
protein
TypA).
Notable
changes
biolixiviant
pH
were
only
observed
3
strains,
suggesting
role
non-acid
mechanisms
bioleaching.
These
findings
provide
valuable
insights
into
further
enhancing
REE-bioleaching
’
through
targeted
genetic
engineering.
Processes,
Journal Year:
2024,
Volume and Issue:
12(10), P. 2203 - 2203
Published: Oct. 10, 2024
The
integration
of
lithium
into
technological
applications
has
profoundly
influenced
human
development,
particularly
in
energy
storage
systems
like
lithium-ion
batteries.
With
global
demand
for
surging
alongside
advancements,
the
sustainable
extraction
and
recovery
this
critical
material
have
become
increasingly
vital.
This
paper
explores
lithium’s
role,
its
chemical
properties,
environmental
economic
considerations
associated
with
recovery.
We
examine
various
methods,
including
conventional
techniques
such
as
hydrometallurgy,
pyrometallurgy,
direct
physical
recycling,
well
emerging
technologies
mechanochemistry,
ion
pumping,
bioleaching
while
emphasizing
need
practices
to
address
challenges.
review
also
discusses
challenges
future
directions
Advances
technology
streamlined
processes
spurred
development
innovative
techniques.
concludes
an
emphasis
on
further
research
essential
deepen
our
understanding
their
strengths
limitations,
explore
new
strategies
meet
growing
indispensable
resource.
Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(4), P. 113169 - 113169
Published: May 26, 2024
The
increasing
demand
for
modern
technologies
has
led
to
a
growing
reliance
on
rare
earth
elements
(REEs).
To
address
this
issue,
recycling
used
products
such
as
permanent
magnet
waste
containing
REEs.
However,
approach
necessitates
the
development
of
advanced
extraction
and
separation
techniques
ensure
high
yields
purity
REEs
extracted.
This
review
provides
an
overview
latest
technologies,
with
particular
focus
hydrometallurgical
extracting
from
secondary
sources,
notably
magnets.
Hydrometallurgy,
which
involves
leaching
followed
by
solvent
purification,
gained
widespread
use
obtaining
evidenced
its
reported
recovery
efficiencies.
We
found
that
using
chemical
varied
between
80%
99%,
influenced
factors
type
source
material,
solvent,
conditions,
impurities,
reaction
kinetics
solid-liquid
ratio.
effectively
employing
process
larger
scale
still
faces
certain
challenges
due
excessive
corrosive
solvents
generation
toxic
chemicals
end
in
form
leachate.
Additionally,
current
exhibits
deficiencies
targeted
waste,
specifically
achieving
selectivity
eliminating
iron
impurities.
article
concludes
future
prospects
selective
neodymium
boron
lie
green
environment-friendly
solvents.
One
revolves
around
utilization
biodegradable
organic
acids
salt
aqua
regia
leaching.
These
are
less
have
dissolution
efficiency,
results
consumption
overall
cost-effective
process.
Bioresource Technology,
Journal Year:
2024,
Volume and Issue:
402, P. 130750 - 130750
Published: April 27, 2024
The
recovery
of
rare
earth
elements
(REE)
from
electronic
waste
is
crucial
for
ensuring
future
demand
security,
as
there
a
high
supply
risk
this
group
elements,
and
mitigating
the
environmental
impacts
conventional
mining.
This
research
focuses
on
extracting
REE
printed
circuit
boards
through
bioleaching,
addressing
limited
attention
given
to
source.
A
strain
Penicillium
expansum
demonstrated
efficient
bioleaching
under
optimal
conditions
7.5
initial
pH,
0.1
mM
phosphate
concentration,
excluding
buffering
agent.
study
achieved
significant
improvements
in
La
Tb
extraction
enhancements
Pr,
Nd,
Gd
recovery,
approaching
70
%
within
24
h.
Fungal
mechanisms
involved
included
fungal
pH
control,
organic
acid
biosynthesis,
bioavailability,
potential
proton
pump
involvement.
approach
offers
promising
solution
sustainable
e-waste,
contributing
resource
security
circular
economy.
Bioengineering,
Journal Year:
2025,
Volume and Issue:
12(2), P. 101 - 101
Published: Jan. 22, 2025
End-of-life
(EoL)
mobile
phones
represent
a
valuable
reservoir
of
critical
raw
materials
at
higher
concentrations
compared
to
primary
ores.
This
review
emphasizes
the
need
transition
from
single-material
recovery
approaches
comprehensive,
holistic
strategies
for
recycling
EoL
phones.
In
response
call
sustainable
techniques
with
reduced
energy
consumption
and
pollutant
emissions,
biohydrometallurgy
emerges
as
promising
solution.
The
present
work
intends
most
relevant
studies
focusing
on
exploitation
microbial
consortia
in
bioleaching
biorecovery
processes.
All
living
organisms
macro-
micronutrients
their
metabolic
functionalities,
including
some
elements
contained
By
exploring
interactions
between
communities
diverse
found
phones,
this
paper
establishes
microbial-centric
perspective
by
connecting
each
element
layer
role
cell
system.
A
special
focus
is
dedicated
concepts
ecodesign
modularity
key
requirements
electronics
potentially
increase
selectivity
process.
bridging
science
design,
proposes
an
innovative
roadmap
optimize
metal
recovery,
aligning
principles
circular
economy
advancing
scalable
biotechnological
solutions
electronic
waste
management.
Minerals,
Journal Year:
2025,
Volume and Issue:
15(3), P. 261 - 261
Published: March 2, 2025
In
this
research,
the
bio-oxidative
capacity
of
three
acidophilic
bacterial
strains
(Acidithiobacillus
thiooxidans,
Leptospirillum
ferriphilum,
and
an
unidentified
native
consortium)
are
analyzed
through
dissolution
cyanicidal
species
in
a
polymetallic
sulfide
mineral
mainly
composed
pyrite,
quartz,
sphalerite,
chalcocite.
The
main
objective
is
reduction
amount
sodium
cyanide
used
for
recovery
Au
Ag
improvement
economic
environmental
benefits
processing
these
minerals.
Additionally,
23
factorial
experimental
design,
effect
pH
pulp
density
(%)
on
bio-oxidation
evaluated.
results
reveal
that
process
concentrate
has
been
favored
at
low
values
density,
favoring
Cu
above
all
dissolution,
which
form
stable
complexes
with
cyanide,
leading
to
excessive
consumption.
Therefore,
=
1.0
10%,
catalytic
activity
Acidithiobacillus
thiooxidans
achieves
73.30%
Cu,
19.92%
Pb,
57.37%
Zn,
25.17%
Fe
flask
level
83.18%
12.18%
55.36%
40.98%
bioreactor
level,
allowing
89.5%
80.4%
Ag,
respectively.