Energy & Fuels,
Год журнала:
2024,
Номер
38(3), С. 2010 - 2017
Опубликована: Янв. 20, 2024
Natural
hydrogen
has
gained
prominence
as
a
potential
contributor
to
the
low-carbon
energy
landscape;
however,
exploration
techniques
are
still
evolving.
Current
methods
primarily
rely
on
dry
soil
gas
studies
or
vent
measurements.
Because
vents
scarce
and
groundwater
inhibits
flux
from
soil,
other
field
detection
necessary.
This
research
paper
presents
novel
approach
for
advancing
natural
through
analysis
of
headspace
agitated
extracted
dedicated
shallow
boreholes
better
estimate
its
variations
with
time.
Several
were
drilled
in
Western
Australia
Yilgarn
Craton
test
new
protocol
versus
standard
meter
sensing
method
detect
quantify
seepage.
While
could
not
because
occurrence,
technique
was
able
elevated
levels
boreholes.
These
concentrations
exhibit
both
temporal
spatial
variations,
highlighting
complex
dynamics
surface
By
introducing
this
innovative
technique,
we
provide
practical
straightforward
tool
subsurface
regardless
water
in/around
sensor,
thereby
facilitating
development
promising
resource.
International Journal of Hydrogen Energy,
Год журнала:
2024,
Номер
58, С. 583 - 595
Опубликована: Янв. 26, 2024
Exploring
underground
hydrogen
storage
in
carbonate-rich
mineral
formations
as
a
viable
option
for
large-scale
demands
thorough
research
of
interaction
complex
subsurface
environments.
Therefore,
this
study
employed
Monte
Carlo
(MC)
simulations
to
investigate
the
adsorption
mechanism
with
calcite
(CaCO3)
presence
geological
fluids.
This
investigation
was
initiated
by
evaluating
CO2
and
CH4
validate
simulation
system.
Later,
concentration
system
systematically
increased
understand
behavior
mixed-gas
competitive
system,
followed
removal
other
gases
evaluate
pure
under
both
dry
water-wet
conditions.
The
results
showed
that
increasing
pressure
values
up
2.65
mol/kg
at
323
50
MPa
without
fully
saturating
surface.
Meanwhile,
temperature
reduced
affinity
causing
decrease
Henry
coefficient
2.14
403
K
MPa.
In
addition,
resulted
development
strong
layers
on
surface,
leading
50%
adsorption.
Also,
introducing
water
film
onto
led
an
approximately
11%
reduction
due
hydrophilic
nature
calcite.
also
found
atoms
including
calcium,
carbon,
oxygen.
These
novel
findings
allow
us
better
mechanisms
molecular
level,
guiding
future
experiments
reducing
need
extensive
samples.
Sustainability,
Год журнала:
2024,
Номер
16(5), С. 1958 - 1958
Опубликована: Фев. 27, 2024
The
paper
adopts
an
interdisciplinary
approach
to
comprehensively
review
the
current
knowledge
in
field
of
porous
geological
materials
for
hydrogen
adsorption.
It
focuses
on
detailed
analyses
adsorption
characteristics
clay
minerals,
shale,
and
coal,
considering
effect
factors
such
as
pore
structure
competitive
with
multiple
gases.
fundamental
principles
underlying
physically
controlled
storage
mechanisms
these
matrices
are
explored.
findings
show
that
coal
is
predominantly
governed
by
physical
follows
Langmuir
equation.
capacity
decreases
increasing
temperature
increases
pressure.
presence
carbon
dioxide
methane
affects
hydrogen.
Pore
characteristics—including
specific
surface
area,
micropore
volume,
size—in
crucial
influence
Micropores
play
a
significant
role,
allowing
molecules
interact
walls,
leading
increased
enthalpy.
This
comprehensive
provides
insights
into
potential
materials,
laying
groundwork
further
research
development
efficient
sustainable
solutions.
