Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 1, 2024
Abstract
Brazil
is
crucial
to
tackling
climate
change
and
halting
biodiversity
loss.
Yet
given
its
intention
rely
on
biofuels
for
clean
energy,
there
a
growing
risk
that
uncoordinated
policy
leads
these
goals
compete
with
each
other.
Here
we
explore
their
interplay
through
long-term
energy
scenarios
based
spatially
explicit
system
model.
We
find
in
baseline
scenario
where
doubles
biofuel
use
by
2050,
substantial
dedicated
land
needed,
converting
mostly
degraded
pastures.
More
importantly,
appropriate
planning,
renewable
combined
can
meet
demand
highly
electrified
systems
emissions
decline
40%-91%
without
conflicting
conservation-relevant
lands
noticeable
effect
costs.
Finally,
be
reforested
thereby
contribute
up
15.43
Gton
of
carbon
stored,
showing
mitigation
ecosystem
recovery
synergistic.
Nature Reviews Chemistry,
Journal Year:
2024,
Volume and Issue:
8(5), P. 376 - 400
Published: May 1, 2024
Electrification
to
reduce
or
eliminate
greenhouse
gas
emissions
is
essential
mitigate
climate
change.
However,
a
substantial
portion
of
our
manufacturing
and
transportation
infrastructure
will
be
difficult
electrify
and/or
continue
use
carbon
as
key
component,
including
areas
in
aviation,
heavy-duty
marine
transportation,
the
chemical
industry.
In
this
Roadmap,
we
explore
how
multidisciplinary
approaches
enable
us
close
cycle
create
circular
economy
by
defossilizing
these
difficult-to-electrify
those
that
need
carbon.
We
discuss
two
for
this:
developing
alternatives
improving
ability
reuse
carbon,
enabled
separations.
Furthermore,
posit
co-design
use-driven
fundamental
science
are
reach
aggressive
reduction
targets.
To
achieve
net-zero
emissions,
must
industries
electrify.
Developing
needed
provide
non-fossil
accelerate
advances
towards
defossilization.
Journal of Sustainable Tourism,
Journal Year:
2024,
Volume and Issue:
32(9), P. 1784 - 1810
Published: June 22, 2024
Human
emissions
must
reach
zero
by
2050
to
avoid
dangerous
climate
change.
Most
sectors
have
achieved
a
downward
path
for
their
greenhouse
gas
emissions,
but
tourism's
continued
grow.
We
explore
scenarios
reduce
global
tourism
and
find
only
narrow
pathway
that
could
lead
net
while
not
severely
damaging
the
economy.
Our
study
uses
system
dynamics
model.
describe
business-as-usual
scenario,
including
its
consequences
share
of
remaining
carbon
budgets
if
world
is
limit
temperature
rise
1.5
or
2
°C.
45
possible
policy
approaches,
like
taxes
subsidies,
infrastructure
investments,
off-sets,
technology,
behavioural
changes,
sustainable
aviation
fuels.
Key
measures
appear
be
mandate
e-fuel
mixing
up
100%
2050,
multi-trillion
USD
investment
in
hydrogen-powered
electric
aircraft
high-speed
rail
infrastructure.
limited
renewable
energy
supply
will
constrain
growth
it
2050.
A
risk-analysis
explores
robustness
policies.
Finally,
we
discuss
(ZET)
scenario
propose.
Energies,
Journal Year:
2024,
Volume and Issue:
17(11), P. 2650 - 2650
Published: May 30, 2024
This
comprehensive
review
examines
the
role
of
sustainable
aviation
fuels
(SAFs)
in
promoting
a
more
environmentally
responsible
industry.
study
explores
various
types
biofuels,
including
hydroprocessed
esters
and
fatty
acids
(HEFAs),
Fischer–Tropsch
(FT)
fuels,
alcohol-to-jet
(ATJ)
oil
derived
from
algae.
Technological
advancements
production
processing
have
enabled
SAF
to
offer
significant
reductions
greenhouse
gas
emissions
other
pollutants,
contributing
cleaner
environment
better
air
quality.
The
addresses
environmental,
economic,
technical
benefits
SAF,
as
well
challenges
associated
with
their
adoption.
Lifecycle
analyses
are
used
assess
net
environmental
focus
on
feedstock
sustainability,
energy
efficiency,
potential
impacts
biodiversity
land
use.
Challenges
such
economic
viability,
scalability,
regulatory
compliance
discussed,
emphasis
need
for
supportive
policies
international
collaboration
ensure
long-term
sustainability
SAF.
also
current
applications
commercial
airlines
military
settings,
highlighting
successful
case
studies
regional
differences
driven
by
policy
frameworks
government
incentives.
By
technological
innovation
addressing
barriers,
has
play
crucial
industry’s
transition
toward
sustainability.
Environmental Science Atmospheres,
Journal Year:
2023,
Volume and Issue:
3(12), P. 1693 - 1740
Published: Jan. 1, 2023
The
effects
of
aviation's
non-CO
2
emissions
on
climate
and
air
quality
are
complex
relatively
poorly
understood.
Mitigation
measures
need
to
be
very
carefully
considered
so
that
perverse
outcomes
do
not
result.
Energies,
Journal Year:
2024,
Volume and Issue:
17(5), P. 1172 - 1172
Published: March 1, 2024
Nowadays,
there
is
an
intense
debate
in
the
European
Union
(EU)
regarding
limits
to
achieve
Green
Deal,
make
Europe
first
climate-neutral
continent
world.
In
this
context,
are
also
different
opinions
about
role
that
thermal
engines
should
play.
Furhermore,
no
clear
proposal
possibilities
of
use
green
hydrogen
transport
decarbonization
process,
even
though
it
be
a
key
element.
Thus,
still
precise
guidelines
hydrogen,
with
being
exclusively
used
as
raw
material
produce
E-fuels.
This
review
aims
evaluate
applying
alternative
technologies
available
successfully
complete
process
already
underway
Climate
Neutrality
by
2050,
depending
on
maturity
currently
available,
and
those
anticipated
coming
decades.
The Chemical Record,
Journal Year:
2023,
Volume and Issue:
24(1)
Published: Sept. 29, 2023
Abstract
The
research
in
energy
storage
and
conversion
is
playing
a
critical
role
policy
as
the
innovation
technological
progress
are
essential
for
achieving
transition
climate
neutrality
goals.
Hydrogen
Fuel
Cell
technology
considered
strategic
element
pursuit
of
sustainable
clean
solutions.
This
increasingly
gaining
attention
recent
years
potential
substitute
to
conventional
non‐renewable
sources.
cell
can
be
employed
domestic/commercial
use
along
with
powering
transportation
sector
which
currently
employs
battery
systems.
However,
these
systems
pose
severe
limitations
respect
longer
charging
times
limited
distance
range.
review
article
aims
at
providing
comprehensive
methodical
overview
hydrogen‐based
fuel
key
concepts,
present
day
scenarios,
including
market
industry
trends,
government
policies
initiatives,
major
stakeholders
involved
scaling
up
mass
consumption.
outlook
cells,
their
capability
revolutionise
discussed.
advancements
breakthroughs
on
horizon
challenges
safety
concerns
related
widespread
acceptance
cells
analysed.
The Science of The Total Environment,
Journal Year:
2023,
Volume and Issue:
912, P. 169107 - 169107
Published: Dec. 15, 2023
While
air
transport
decarbonization
is
theoretically
feasible,
less
attention
has
been
paid
to
the
complexity
incurred
in
various
'transition
barriers'
that
act
as
roadblocks
net-zero
goals.
A
total
of
40
barriers
related
mitigation,
management,
technology
and
fuel
transition,
finance,
governance
are
identified.
As
these
make
uncertain,
paper
analyzes
system's
growth,
revenue,
profitability.
Over
period
1978–2022,
global
aviation
generated
marginal
profits
US$20200.94
per
passenger,
or
US$202082
billion
total.
Low
profitability
makes
it
unlikely
sector
can
finance
transition
cost,
at
US$0.5–2.1
trillion
(Dray
et
al.
2022).
Four
radical
policy
scenarios
for
futures
developed.
All
characterized
by
"limitations",
such
CO2
taxes,
a
carbon
budget,
alternative
obligations,
available
capacity.
Scenario
runs
suggest
all
will
more
reliably
lead
than
continued
volume
growth
model
pursued
airlines.
