International Journal of Low-Carbon Technologies,
Год журнала:
2024,
Номер
20, С. 289 - 302
Опубликована: Дек. 6, 2024
Abstract
This
study
addresses
the
challenge
of
sustainable,
multi-generational
energy
production
by
introducing
an
innovative
geothermal-powered
system
for
simultaneous
methane,
electricity,
cooling,
and
freshwater
generation.
The
configuration
integrates
a
flash-binary
geothermal
power
setup
with
Organic
Rankine
Cycle,
dual-effect
absorption
multi-stage
flash
desalination,
solid
oxide
electrolyzer
cell
(SOEC)
linked
to
Sabatier
reactor
CO2
hydrogenation.
Financial
analysis
reveals
annual
revenue
$63.6
million,
operating
expenses
$54.8
million
labor
costs
$5.81
leading
7.3-year
return
on
investment
period.
Optimized
SOEC
operation,
including
higher
working
temperatures,
reduces
voltage
losses,
improving
efficiency.
Applied Sciences,
Год журнала:
2025,
Номер
15(2), С. 497 - 497
Опубликована: Янв. 7, 2025
This
research
undertakes
a
comparative
analysis
of
current
and
emerging
hydrogen
(H2)
production
technologies,
evaluating
them
based
on
quantitative
qualitative
decision
criteria.
The
criteria
include
cost
H2
(USD/kg
H2),
energy
consumption
(MJ/kg
global
warming
potential
(kg
CO2-eq/kg
technology
efficiency
(%).
encompass
readiness
level
(TRL)
availability
supply
chain
materials
(classified
as
low,
medium,
or
high).
To
achieve
these
objectives,
an
extensive
literature
review
has
been
conducted,
systematically
assessing
the
selected
technologies
against
aforementioned
insights
synthesized
from
provide
foundation
for
informed,
science-based
evaluation
potentials
techno-economic
challenges
that
face
in
achieving
1-1-1
goal
set
by
U.S.
Department
Energy
(DOE)
2021.
target
aims
USD
1/kg
within
one
decade
(by
2031),
including
costs
associated
with
production,
delivery,
dispensing
at
fueling
stations
(HRSs).
Also,
DOE
established
interim
2/kg
2026.
concludes
among
examined
water
electrolysis
biomass
waste
valorization
emerge
most
promising
near-term
solutions
to
meet
DOE’s
goal.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 9, 2025
This
study
presents
an
innovative
approach
to
enhancing
biogas
production
through
the
anaerobic
digestion
of
Nanjing
Jiangnan
Wastewater
Treatment
Plant
(NJWTP).
Utilizing
data-driven
modeling
and
optimization
methods,
research
focuses
on
improving
sustainability
cost-effectiveness
waste-to-energy
conversion
processes.
The
core
involves
comparison
three
distinct
models:
Deep
Belief
Network
(DBN),
DBN
with
Osprey
Optimization
Algorithm
(DBN-OOA),
Boosted
(DBN-BOOA).
In
total,
180
data
points
were
gathered
from
2016
2018
for
purpose
current
study.
Among
models
evaluated,
(DBN)
coupled
(BOOA)
emerged
as
superior
method,
demonstrating
high
accuracy
capabilities.
DBN-BOOA
model
achieved
remarkable
performance
metrics,
including
a
correlation
coefficient
(R)
0.98,
root
mean
square
error
(RMSE)
0.41
m³/min,
index
agreement
(IA)
0.99,
significantly
outperforming
standalone
DBN-OOA
models.
Furthermore,
identified
optimal
operational
parameters
that
maximized
31.35
surpassing
outputs
other
method's
success
is
attributed
its
robust
algorithm,
which
efficiently
navigates
diverse
search
space
locate
global
optimum
without
necessitating
input
variable
pre-processing.
Consequently,
offers
practical
user-friendly
solution
MWTP
operators,
enabling
real-time
adjustments
increased
yields
reduced
sludge
production.
Hydrogen,
Год журнала:
2025,
Номер
6(2), С. 24 - 24
Опубликована: Апрель 10, 2025
Hydrogen
energy
is
essential
in
the
transition
to
sustainable
transportation
planning,
providing
a
clean
and
efficient
alternative
traditional
fossil
fuels.
As
versatile
carrier,
hydrogen
facilitates
decarbonization
of
diverse
modes,
including
passenger
vehicles,
heavy-duty
trucks,
trains,
maritime
vessels.
To
justify
clarify
role
this
study
conducts
comprehensive
techno-economic
environmental
assessment
production
USA,
Europe,
China.
Utilizing
Shlaer–Mellor
method
for
policy
modeling,
analysis
highlights
regional
differences
offers
actionable
insights
inform
strategic
decisions
frameworks
advancing
adoption.
potential
was
assessed
from
solar
biomass
resources,
with
results
showing
that
solar-based
significantly
more
efficient,
producing
704
tons/yr/km2,
compared
5.7
tons/yr/km2
biomass.
A
Monte
Carlo
simulation
conducted
project
emissions
market
share
gasoline
vehicles
2024
2050.
The
indicate
could
achieve
near-zero
capture
approximately
30%
by
2050,
while
will
decline
60%
higher
emissions.
Furthermore,
using
USA
yields
per
capita
output
330,513
kg/yr,
6079
kg/yr
concludes
hydrogen,
particularly
renewable
sources,
holds
significant
reducing
greenhouse
gas
emissions,
China
focused
on
addressing
dependence,
air
pollution,
technological
development
sector.
Water,
Год журнала:
2025,
Номер
17(3), С. 416 - 416
Опубликована: Фев. 2, 2025
The
global
need
for
energy
has
risen
sharply
recently.
A
shift
to
clean
is
urgently
needed
avoid
catastrophic
climate
impacts.
Hydrogen
(H2)
emerged
as
a
potential
alternative
source
with
near-net-zero
emissions.
In
the
African
continent,
sustainable
access
and
transition
away
from
fossil
fuels,
this
paper
presents
new
approach
through
which
waste
can
produce
green
hydrogen
biomass.
Bio-based
employing
organic
biomass
recommended
using
biological
(anaerobic
digestion
fermentation)
processes
scalable,
cheaper,
low-carbon
hydrogen.
By
reviewing
all
methods
producing
hydrogen,
dark
fermentation
be
applied
in
developed
developing
countries
without
putting
pressure
on
natural
resources
such
freshwater
rare
metals,
primary
feedstocks
used
by
electrolysis.
It
expanded
medium-
long-term
relying
heavily
sources
or
building
expensive
infrastructure.
Implementing
process
support
poor
communities
an
regardless
of
political
tribal
conflicts,
unlike
other
that
require
stability.
addition,
does
not
approval
legislation.
Such
ensure
minimization
greenhouse
gases.
To
achieve
cost
reduction
production
2030,
governments
should
develop
strategy
expand
use
reactors
utilize
hot
water
various
industrial
(waste
recovery
wastewater).
International Journal of Low-Carbon Technologies,
Год журнала:
2025,
Номер
20, С. 443 - 452
Опубликована: Янв. 1, 2025
Abstract
This
study
examines
the
feasibility
of
establishing
a
power-to-fuel
facility
for
synthesizing
renewable
methanol
(e-methanol)
through
integration
green
hydrogen
and
captured
carbon
dioxide.
Hydrogen
is
produced
via
water
electrolysis
using
surplus
electricity,
while
dioxide
from
conventional
power
plant’s
emissions
an
amine-based
absorption
process.
Despite
current
economic
constraints,
with
production
costs
exceeding
market
prices
methanol,
highlights
potential
future
competitiveness,
especially
considering
impending
European
regulatory
frameworks.
Furthermore,
employs
hybrid
Grey
Wolf
Optimizer–Particle
Swarm
Optimization
approach
to
balance
trade-offs
between
cost
energy
efficiency.