Applied Sciences,
Год журнала:
2024,
Номер
15(1), С. 140 - 140
Опубликована: Дек. 27, 2024
Pressure
swing
adsorption
(PSA)
technology
is
among
the
most
efficient
techniques
for
purifying
and
separating
hydrogen.
A
layered
bed
composed
of
activated
carbon
zeolite
5A
a
gas
mixture
(H2:
56.4
mol%,
CH4:
26.6
CO:
8.4
N2:
5.5
CO2:
3.1
mol%)
PSA
model
was
built.
The
simulation
validated
using
breakthrough
curves.
Then,
six-step
cycle
built,
purification
performance
studied.
Box–Behnken
design
(BBD)
method
utilized
in
Design
Expert
software
(version
10)
to
optimize
performance.
independent
optimization
parameters
included
time,
pressure
equalization
feed
flow
rate.
Quadratic
regression
models
can
be
derived
represent
responses
purity
productivity.
To
explore
better
solution,
novel
machine
learning
with
back
propagation
neural
network
(BPNN)
then
proposed,
kind
heuristic
algorithm–genetic
algorithm
(GA)
introduced
enhance
architecture
BPNN.
predicted
outputs
hydrogen
production
two
kinds
based
on
BPNN–GA
BBD
integrated
(BBD–BPNN–GA).
findings
revealed
that
BBD–BPNN–GA
exhibited
mean
square
error
(MSE)
0.0005,
its
R–value
correlation
coefficient
being
much
closer
1,
while
an
MSE
0.0035.
This
suggests
has
performance,
as
evidenced
by
lower
higher
compared
model.
Biogas
results
from
the
anaerobic
digestion
of
organic
materials,
a
reliable
and
sustainable
process
that
simultaneously
manages
waste
generates
renewable
energy.
However,
presence
secondary
impurities,
such
as
carbon
dioxide
(CO2)
other
gases,
in
raw
biogas
diminishes
its
efficacy,
significantly
lowering
energy
content
restricting
utility
across
industry
sectors.
Moreover,
these
impurities
contribute
to
various
health
environmental
concerns,
including
their
role
exacerbating
climate
change
global
warming.
Consequently,
efficient
separation
CO2
is
essential
for
upgrading
biogas.
The
interest
utilizing
transportation
fuel
or
substitute
natural
gas
has
spurred
advancement
technologies.
While
methods
exist
upgrading,
those
relying
on
absorption
stand
out
particularly
significant.
Carbon
capture
efficiency
pertains
ability
method
effectively
separate
biogas,
typically
composed
methane
(CH4)
gases.
This
crucial
producing
high-quality
with
minimal
emissions,
thus
promoting
sustainability.
Enhancing
reducing
greenhouse
emissions
cleaner
production.
efficacy
relies
adsorbents
adsorption
isotherms,
which
are
integral
components
this
process.
Improving
elements
vital
enhancing
purity,
ensuring
suitability
applications,
mitigating
footprint.
Traditional
enhance
by
employing
adsorbents,
zeolites
activated
carbon,
well
optimizing
isotherms.
Surface
modifications
adjustments
parameters
have
also
led
improved
selectivity
over
still
drawbacks,
poor
selectivity,
difficulties
regeneration,
scalability.
These
limitations
draw
attention
necessity
ongoing
optimization,
investigating
gaining
thorough
grasp
how
capacities,
kinetics,
interact.
Adsorbents
isotherms
main
topics
study’s
analysis,
examines
state
art
increasing
upgrading.
It
discusses
conventional
methods,
suggests
alternate
customized
adjustments,
optimization
techniques
means
achieving
progress.
suggested
changes,
investigation
materials
be
used
increase
effectiveness
capture.
To
guarantee
consistency,
study
specific
rules
procurement,
preparation,
calcining
eggshells.
In
addition,
balancing
CH4
adsorption,
improving
adsorbent
composition
addressing
scalability,
long-term
stability,
practical
implementation
challenges
critical.
direct
future
studies
toward
more
landscape
adding
our
understanding
This
review
provides
a
systematic
analysis
of
advancements
in
biogas
refining
and
biomethane
purification,
focusing
on
the
application
biomass-derived
activated
carbon
(AC)
modified
with
metal
oxides
for
removal
hydrogen
sulfide
(H2S)
dioxide
(CO2).
We
explore
technological
innovations
upgrading,
including
water
scrubbing,
pressure
swing
adsorption
(PSA),
membrane
separation,
others,
highlighting
their
operational
efficiency,
environmental
impact,
cost-effectiveness.
The
H2S
CO2
is
critical
converting
raw
biogas,
primarily
composed
methane
(CH4)
CO2,
into
high-purity
biomethane,
making
it
suitable
integration
existing
natural
gas
infrastructures.
Our
findings
underscore
potential
these
new
composite
materials
to
enhance
upgrading
technologies,
fostering
broader
use
as
sustainable
energy
source.
Furthermore,
this
offers
valuable
insights
future
design
optimization
processes,
positioning
AC
essential
advancing
field
purification.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 23, 2024
Abstract
High
purity
hydrogen
is
a
necessary
need
for
fuel
cell.
Pressure
swing
adsorption
(PSA)
technology
one
of
the
effective
methods
purification.
The
layered
bed
PSA
model
built
and
validated.
To
simplify
calculation
purification
performance,
quadratic
regression
equations
are
obtained
by
Box-Behnken
design
(BBD)
method.With
time,
pressure
equalization
time
feed
flow
rate
from
process
as
independent
optimization
parameters
BBD
method,
productivity
two
responses.
genetic
algorithm
(GA)
introduced
to
back
propagation
neural
network
(BPNN)
solve
problem
process.
In
order
explore
performance
algorithms,
novel
method
proposed
in
this
work.
With
integrated
with
BPNN-GA
optimize
structure
(BBD-BPNN-GA).
results
showed
that
BBD-BPNN-GA
have
better
MSE
0.0005,
while
mean
square
error
(MSE)
0.0035.
And
correlation
coefficient
R-values
much
closer
1of
model,
which
illustrated
can
be
effectively
applied
prediction
