Frontiers in Bioengineering and Biotechnology,
Journal Year:
2025,
Volume and Issue:
12
Published: Jan. 9, 2025
The
number
of
metal-containing
waste
streams
resulting
from
electronic
end-of
life
products,
metallurgical
by-products,
and
mine
tailings
to
name
but
a
few,
is
increasing
worldwide.
In
recent
decades,
the
potential
exploit
these
as
valuable
secondary
resources
meet
high
demand
critical
economically
important
raw
materials
has
become
more
prominent.
this
review,
fundamental
principles
bio-based
metal
recovery
technologies
are
discussed
focusing
on
microbial
metabolism-dependent
metabolism-independent
mechanisms
sustainable
alternatives
conventional
chemical
methods.
contrast
previous
reviews
which
have
partially
addressed
topic,
special
focus
will
be
given
how
can
influence
selectivity
specificity
recovery.
While
methods
for
show
benefits
in
terms
economic
affordability,
offer
advantages
efficiency
environmentally
friendliness.
Modifications
adaptations
processes
biosorption,
bioaccumulation
bioelectrochemical
systems
highlighted,
further
emphasizing
application
metal-binding
peptides
siderophores
increase
metals.
Single
solutions
or
mixtures
with
low
complexity
been
studies
reviews,
does
not
reflect
nature
complex
industrial
effluents.
Therefore,
key
challenges
that
arise
when
dealing
polymetallic
set
optimizing
recover
metals
efficiently
selectively
bio-leachates
liquid
streams.
Environmental Chemistry Letters,
Journal Year:
2023,
Volume and Issue:
21(6), P. 3329 - 3350
Published: May 22, 2023
Abstract
The
global
transition
to
a
circular
economy
calls
for
research
and
development
on
technologies
facilitating
sustainable
resource
recovery
from
wastes
by-products.
Metal-bearing
materials,
including
electronic
wastes,
tailings,
metallurgical
by-products,
are
increasingly
viewed
as
valuable
resources,
with
some
possessing
comparable
or
superior
quality
natural
ores.
Bioleaching,
an
eco-friendly
cost-effective
alternative
conventional
hydrometallurgical
pyrometallurgical
methods,
uses
microorganisms
their
metabolites
extract
metals
unwanted
metal-bearing
materials.
performance
of
bioleaching
is
influenced
by
pH,
solid
concentration,
energy
source,
agitation
rate,
irrigation
aeration
inoculum
concentration.
Optimizing
these
parameters
improves
yields
encourages
the
wider
application
bioleaching.
Here,
we
review
microbial
diversity
specific
mechanisms
metal
recovery.
We
describe
current
operations
approaches
at
various
scales
summarise
influence
broad
range
operational
parameters.
Finally,
address
primary
challenges
in
scaling
up
applications
propose
optimisation
strategy
future
research.
Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(3), P. 113118 - 113118
Published: May 20, 2024
The
mining
sector
generates
massive
quantities
of
mine
tailings
in
response
to
the
ever-growing
demand
for
mineral
products.
Mine
(MTs)
pose
a
major
environmental
problem
because
challenges
associated
with
their
management
and
storage.
Depending
on
type
ore
extracted
processing
techniques
employed,
there
is
possibility
extracting
valuable
components
from
these
tailings,
such
as
rare
earth
elements
(REEs).
However,
optimal
utilization
MTs
should
focus
repurposing
all
waste,
not
just
economically
ones.
This
review
offers
insights
into
MT
types,
characterization,
impacts.
It
evaluates
hydrometallurgical
bio-hydrometallurgical
routes
promising
technologies
recovery
REEs
highlights
mechanical
activation's
potential
pretreatment
enhanced
REE
extraction.
study
explores
reuse
options
post-extraction
residues,
including
construction
materials
via
geopolymerization.
goal
this
present
current
best
practices
that
enable
industry
fully
recycle
both
residual
MTs.
An
integrated
approach
combining
reprocessing
applications
can
transform
circular
economy
resources.
Minerals,
Journal Year:
2024,
Volume and Issue:
14(3), P. 319 - 319
Published: March 19, 2024
The
mining
industry
is
confronted
with
substantial
challenges
in
achieving
environmental
sustainability,
particularly
regarding
water
usage,
waste
management,
and
dam
safety.
increasing
global
demand
for
minerals
has
led
to
increased
activities,
resulting
significant
consequences.
By
2025,
an
estimated
19
billion
tons
of
solid
tailings
are
projected
accumulate
worldwide,
exacerbating
concerns
over
their
management.
Tailings
storage
facilities
represent
the
largest
sinks
within
operations.
mismanagement
content
can
compromise
stability,
leading
potential
failures
catastrophes.
In
response
these
pressing
challenges,
increasingly
turning
innovative
solutions
such
as
dewatering
reuse/recycling
strategies
promote
sustainable
development.
This
review
paper
aims
(I)
redefine
role
mine
explore
physical,
chemical,
mineralogical
characteristics;
(II)
discuss
associated
conventional
disposal
methods;
(III)
recent
advancements
techniques,
assessing
recovery,
technical
economic
constraints,
sustainability
considerations;
(IV)
present
encountered
treatment
recycling
industry,
highlighting
areas
future
research
obstacles
maximizing
value
while
minimizing
impact.
Resources Policy,
Journal Year:
2024,
Volume and Issue:
90, P. 104859 - 104859
Published: Feb. 26, 2024
Post-mining
transition
is
a
growing
area
of
interest
in
research,
policy
and
practice.
One
the
key
reasons
for
this
attention
increasing
number
mines
closing,
expected
to
close,
coming
decades
around
world.
Another
reason
heightened
focus
on
closure
stems
from
poor
track
record
relinquishment
mines.
Thousands
sit
an
idle
state
'care
maintenance'
partly
because
difficulties
involved
closing
mine
concerns
about
transfer
residual
liability
sites.
The
importance
successful
post-mining
can
be
conceptualised
relation
recent
phenomena.
These
include
development
just
narratives
which
are
strongly
tied
de-carbonisation
agenda.
within
industry
land
use
(PMLU).
There
few
examples
learn
from.
such
example
-
post-coal
Germany
offers
some
lessons
however
there
limits
transferability
these
other
contexts.
In
response
challenges,
paper
puts
forward
research
agenda
comprising
four
areas.
first
need
deliberation
what
means
different
contexts,
as
lack
shared
understanding
or
should
be.
second
incorporate
wider
range
values
perspectives
into
analysis,
planning,
decision-making
actions
transitions.
third
greater
integration
between
technical,
biophysical
engineering
dimensions
transition,
how
intersect
with
cultural,
social
economic
dimensions.
A
fourth
elevate
scale
at
occurs,
site
regional
beyond.
Collectively,
areas
underpin
shift
thinking
beyond
notions
returning
prior
instead
opportunities
communities
economies.
International Journal of Coal Preparation and Utilization,
Journal Year:
2024,
Volume and Issue:
44(11), P. 1810 - 1827
Published: Jan. 4, 2024
Coal
gangue
is
a
bulk
industrial
solid
waste
produced
in
the
process
of
coal
mining
and
washing,
with
dual
attributes
resourcefulness
hazardousness.
It
can
be
used
as
reserve
resource
for
valuable
critical
metals
such
aluminum
(Al),
lithium
(Li),
gallium
(Ga),
rare
earth
elements
(REEs).
In
this
paper,
occurrence
modes
Li,
Ga,
REEs
were
studied
by
sequential
chemical
extraction
method.
The
from
was
systematically
roasting
activation-sulfuric
acid
leaching
process,
activation
mechanism
elucidated.
results
showed
that
destroy
inert
kaolinite
structure
significantly
improve
rate
metals.
Under
optimum
conditions,
rates
Al,
reached
86.51%,
74.46%,
95.45%,
77.14%,
respectively,
behaviors
Ga
highly
similar.
addition,
characterization
residue
revealed
83.96%
silicon
oxide
content
loose
porous
surface,
which
could
to
prepare
silicon-based
products.
This
study
provides
theoretical
basis
technical
support
utilization
gangue.
