Energies,
Год журнала:
2024,
Номер
17(23), С. 6011 - 6011
Опубликована: Ноя. 29, 2024
This
study
investigates
the
adsorption
performance
of
granular
activated
carbon
(GAC)
and
pelletized
(PAC)
for
purification
syngas
produced
from
glycerol
reforming,
focusing
on
removal
CO2,
CO,
CH4.
The
process
was
studied
at
two
different
flow
rates
(0.5
L/min
1
L/min)
to
assess
impact
particle
size
gas
rate
capacity.
results
indicate
that
GAC
exhibits
superior
multi-gas
adsorption,
particularly
lower
rates,
effectively
capturing
CH4,
while
PAC
performance.
Kinetic
analysis
revealed
pseudo-second-order
Avrami
models
fit
well
with
both
adsorbents,
though
aligns
more
closely
model,
reflecting
its
multi-step
mechanism
greater
pore
diffusion
efficiency.
These
findings
highlight
importance
adsorbent
in
optimizing
hydrogen
processes,
emerging
as
a
highly
efficient
industrial-scale
treatment.
Polymers,
Год журнала:
2025,
Номер
17(5), С. 615 - 615
Опубликована: Фев. 25, 2025
The
increasing
demand
for
high-purity
hydrogen
(H2)
as
renewable
energy
sources
is
driving
advancements
in
membrane
technology,
which
essential
achieving
efficient
gas
separation.
Polyimide
(PI)
membranes
have
become
an
emerging
option
H2/CO2
separation
due
to
its
excellent
thermal
stability
and
under
harsh
conditions.
However,
the
neat
PI
suffers
performance
loss
CO2
plasticization
effect
encountered
trade-off
limit
between
permeability
selectivity.
Therefore,
modification
by
crosslinking
blending
emerged
a
recent
strategy
enhance
membrane's
properties.
This
paper
provides:
(1)
An
overview
of
possible
method
do
membranes,
including
advantages
challenges
types;
(2)
As
most
popular
membrane,
their
roles
enhancing
properties
improved
are
discussed;
(3)
critical
parameters
processes
also
clarified
optimal
purification
process;
(4)
future
outlook
using
technology
discussed,
aiming
provide
commercialization
Thus,
this
review
could
guidelines
readers
implement
changes
that
significantly
features
H2
production.
Polymers,
Год журнала:
2025,
Номер
17(6), С. 743 - 743
Опубликована: Март 12, 2025
In
recent
years,
increased
attention
has
been
paid
to
environmental
issues
and,
in
connection
with
this,
the
development
of
hydrogen
energy.
turn,
this
requires
large-scale
production
ultra
pure
hydrogen.
Currently,
most
is
obtained
by
converting
natural
gas
and
coal.
regard,
issue
deep
purification
for
use
fuel
cells
very
relevant.
The
also
necessary
some
other
areas,
including
microelectronics.
Only
palladium
membranes
can
provide
required
degree
purification.
addition,
membrane
catalysis
relevant
widely
demanded
processes
hydrogenation
dehydrogenation,
which
reactors
are
used.
This
process
successfully
used
single-stage
high-purity
Polymeric
palladium-containing
purify
remove
various
pollutants
from
water,
organochlorine
products,
nitrates,
a
number
substances.
A
multiparametric
study
was
conducted
on
a
hydrogen
(H2)
production
rig
designed
to
process
0.25
Nm3·h−1
of
syngas.
The
consists
two
Pd-Ag
membrane
permeator
units
and
reactor
for
the
water–gas
shift
(WGS)
reaction,
enabling
detailed
comprehensive
analysis
its
performance.
aim
find
optimal
conditions
maximize
by
WGS
separation
in
pure
stream
varying
temperature,
pressure,
steam-to-CO
ratio
(S/CO).
Two
syngas
mixtures
obtained
from
an
updraft
gasifier
using
different
gasification
agents
(air–steam
oxy–steam)
were
used
investigate
effect
gas
composition.
performance
investigated
under
nine
combinations
S/CO
respective
ranges
300–350
°C,
2–8
bar,
1.1–2
mol·mol−1,
as
planned
with
help
design
experiment
(DOE)
software.
three
parameters
positively
affected
performance,
both
terms
capacity
separate
H2,
reported
moles
permeated
per
unit
surface
area
time,
producing
new
H2
WGS,
produced
volume
catalyst
time.
highest
yields
oxy–steam
gasification,
which
had
concentration
free
N2.
Energies,
Год журнала:
2025,
Номер
18(3), С. 741 - 741
Опубликована: Фев. 6, 2025
Hydrogen
purity
plays
a
crucial
role
in
the
expanding
hydrogen
economy,
particularly
applications
such
as
fuel
cells
and
industrial
processes.
This
review
investigates
relationship
between
production
methods
resulting
levels,
emphasizing
differences
reforming,
electrolysis,
biomass-based
techniques.
Furthermore,
it
explores
state-of-the-art
purification
technologies,
including
pressure
swing
adsorption
(PSA),
membrane
separation,
cryogenic
distillation,
highlighting
their
effectiveness
limitations
achieving
ultra-pure
hydrogen.
Analytical
gas
chromatography,
mass
spectrometry,
cavity
ring-down
spectroscopy
are
also
discussed
terms
of
accuracy
application
scope
for
quality
assessment.
By
integrating
findings
from
global
domestic
studies,
this
paper
aims
to
provide
comprehensive
understanding
challenges
advancements
purity,
offering
insights
into
optimizing
sustainable
energy
future.
Energies,
Год журнала:
2025,
Номер
18(8), С. 1887 - 1887
Опубликована: Апрель 8, 2025
Hydrogen
(H2)
is
a
key
energy
carrier
and
industrial
feedstock,
with
growing
interest
in
its
production
from
syngas
water–gas
shift
(WGS)
syngas.
Effective
purification
methods
are
essential
to
ensure
high
hydrogen
purity
for
various
applications,
particularly
fuel
cells,
chemical
synthesis,
or
automotive
fuel.
Pressure
swing
adsorption
(PSA)
has
emerged
as
dominant
separation
technology
due
efficiency,
scalability,
maturity.
This
study
reviews
PSA-based
proposes
an
experimental
framework
based
on
literature
insights.
Key
process
variables
influencing
PSA
performance,
such
adsorbent
selection,
cycle
sequences,
pressure
conditions,
flow
configurations,
identified.
The
proposed
methodology
includes
breakthrough
studies
evaluations
under
dynamic
variations
column
configuration,
(8–9
bar),
concept
(Berlin
Linde
Gas).
purpose
of
the
review
prepare
by
selected
terms
recovery
using
ITPE’s
advanced
technological
facilities.
findings
expected
contribute
improving
strategies,
offering
pathway
enhanced
industrial-scale
production.
work
provides
foundation
bridging
theoretical
principles
practical
implementation,
supporting
demand
clean
sustainable
systems.
Energy Science & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 17, 2025
ABSTRACT
The
present
study
examines
the
potential
of
green
hydrogen
production
in
Canada
using
biomass
and
waste
resources.
Considered
sources
include
urban
waste,
animal
byproducts,
forestry
products
residue,
crop
purpose‐grown
energy
crops.
calculations
discussion
each
province
are
conducted
to
assess
feasibility
a
economy.
Further
studies
projections
annual
for
various
regions
also
government
data
gathered
from
ministerial
sources.
generation
electricity
is
achieved
by
employing
gasification
incineration
systems,
which
result
as
end
product.
This
comprehensive
work
further
provides
maps
Canada,
focusing
on
utilizing
methodologies.
results
this
indicate
that
has
produce
around
2.66
Mt
per
year
its
existing
According
data,
provinces
Alberta,
British
Columbia,
Saskatchewan,
Québec
exhibit
greatest
with
518.46,
449.33,
447.57,
428.11
kt,
respectively.
expected
outcomes
poised
provide
valuable
insights
policymakers
their
use
renewable
purpose
formulating
implementing
new
policies
initiatives.
Additionally,
these
contribute
resolution
challenges
associated
fossil
fuel
dependency.
may
be
examined
within
framework
prevailing
implemented
meet
demands.
