SAE technical papers on CD-ROM/SAE technical paper series,
Journal Year:
2024,
Volume and Issue:
1
Published: Oct. 28, 2024
<div
class="section
abstract"><div
class="htmlview
paragraph">The
aviation
industry
is
undergoing
environmental
scrutiny
due
to
its
significant
greenhouse
gas
emissions.
Sustainable
fuels
(SAFs)
are
a
vital
solution
for
reducing
carbon
emissions
and
pollutants,
aligning
with
global
efforts
carbon-neutral
growth.
SAFs
can
be
produced
via
multiple
production
routes
from
different
feedstock,
resulting
in
significantly
physical
chemical
fuel
properties.
Their
suitability
compression-ignition
(CI)
aircraft
engine
was
evaluated
through
test
bench
investigations
at
TU
Wien
-
Institute
of
Powertrain
Automotive
Technology
partnership
Austro
Engine.
ASTM
D7566-certified
like
Hydrotreated
Vegetable
Oil
(HVO),
Fischer–Tropsch–Kerosene
(FTK)
or
Alcohol
Jet
(AtJ),
but
also
an
oxygen
containing
biodiesel
have
been
tested
extensively.
Gaseous
emissions,
soot
indication
measurement
data,
efficiencies,
the
were
acquired
comprehensively
analyzed
operation
blends.
Operation
all
investigated
could
demonstrated
successfully
three
representative
operating
points
original
setup.
At
constant
boundary
conditions,
neither
maximum
permitted
in-cylinder
pressure,
pressure
gradient,
exhaust
temperature
exceeded
(nevertheless,
adaption
injection
strategy
recommended).
Ignition
delay
combustion
duration—dependent
on
properties—greatly
influence
formation
incomplete
products
HC
CO
as
well
NO<sub>x</sub>
Especially
extremely
low
cetane
number
AtJ
leads
substantial
increase
premixed
combustion,
which
influences
depending
conditions.
A
aromatic
content
(as
found
HVO)
beneficial
HC,
CO,
absence
ring-like
molecule
structures.
Also,
reduced
adiabatic
flame
contributes
decreased
concentration.
The
high
known
soot,
while
it
increased
comparable
air/fuel
ratios
within
specific
point,
blends
exhibit
CO<sub>2</sub>
emissions.</div></div>
Fermentation,
Journal Year:
2025,
Volume and Issue:
11(5), P. 270 - 270
Published: May 9, 2025
Fermentation
at
high
temperatures
may
be
a
viable
alternative
for
ethanol
production,
especially
in
tropical
climate
regions.
This
work
describes
the
evaluation
of
production
through
extractive
fermentation
using
thermotolerant
Kluyveromyces
marxianus.
An
experimental
design
was
applied
to
assess
effect
temperature
on
removal
process
by
CO2
stripping.
Subsequently,
kinetic
modeling
conventional
batch
performed,
and
hybrid
Andrews−Levenspiel
model
found
suitable
describing
kinetics
this
process.
Experiments
were
conducted
evaluate
yeast,
specifically
evaluating
effects
different
specific
flow
rates
(ϕ
=
1.0,
1.5,
2.0
vvm)
The
results
indicated
that
all
fermentations
with
K.
marxianus,
there
faster
substrate
uptake
earlier
exhaustion
compared
fermentation.
Significant
stripping
achieved
rate
1.0
vvm
(EFHT1),
complete
consumption
observed
end
12
h
result
highlights
positive
entrainment.
In
addition,
integrating
technique
high-temperature
(T
40
°C)
improves
efficiency
lower
gas
rate.
is
advantageous,
industrial-scale
applications,
as
it
can
reduce
equipment
costs
associated
feed.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Jan. 9, 2024
Abstract
High
wastewater
production
rates
during
the
past
few
decades
are
mostly
attributable
to
anthropogenic
activities.
The
main
components
leading
nutrient
enrichment
of
natural
water
bodies
such
as
nitrogen,
phosphorus,
and
other
minerals.
focus
this
research
was
assess
ability
using
Chlorella
vulgaris
algae,
a
potent
environmentally
benign
material,
eliminate
phosphate
nitrate
ions
from
wastewater.
FTIR
results
showed
that
biologically
active
molecules
facilitate
binding
unto
C.
C=C
N–H
amid.
ideal
equilibrium
time
for
adsorption
24
h
with
an
optimum
pH
7
mass
ratio
algae
different
anions
concentration
80%.
Freundlich
isotherm
model
best-fitted
isotherm.
Moreover,
experiment
fit
more
closely
pseudo-second-order
kinetic
than
models.
Elovich
data
both
rate
much
higher
desorption
rate.
growing
popularity
biosorbents
in
treating
has
led
improvement
their
affordability
availability,
may
now
represent
friendly
choice
environmental,
economic
standpoint.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(3), P. 1081 - 1081
Published: Jan. 26, 2024
This
review
explores
circular
economy
principles
in
regard
to
ethanol
production
from
paper-mill
sludge.
Environmental
sustainability
and
renewability
over
fossil
fuels
make
second
generation
an
attractive
energy
source
a
rapidly
growing
population
consumption
world.
Paper
sludge
(PS),
by-product
of
the
pulp
paper
(P&P)
industry,
can
no
longer
be
recycled
for
is
mainly
disposed
landfills.
Therefore,
it
poses
major
environmental
challenge.
However,
has
shown
potential
as
valuable
raw
material
production,
along
with
other
products,
due
its
abundant
availability
high
cellulosic
content.
waste-to-energy
(WtE)
technology
proposed
alternative,
aligning
concepts
maximize
resource
efficiency
minimize
waste.
underlines
aspects
bioethanol
within
mill
management
systems.
Circular
applied
PS
offer
promising
avenue
sustainable
biofuel
development
that
not
only
addresses
waste
challenges
but
also
enhances
overall
performance
production.
Furthermore,
economic
benefits
are
described,
highlighting
job
creation
community
development.
Marine Drugs,
Journal Year:
2024,
Volume and Issue:
22(5), P. 230 - 230
Published: May 18, 2024
Alginate
oligosaccharides
(AOS),
products
of
alginate
degradation
by
endotype
lyases,
possess
favorable
biological
activities
and
have
broad
applications.
Although
many
been
reported,
lyases
with
homogeneous
AOS
secretory
production
an
engineered
host
are
scarce.
Herein,
the
lyase
AlyC7
from
Sustainable Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
9(2), P. 338 - 400
Published: Nov. 21, 2024
The
review
sheds
light
on
the
various
types
of
biorefineries
and
feedstocks
employed,
along
with
highlighting
major
fuels
targeted
from
these
feedstocks,
before
discussing
conversion
processes.
