The Journal of Physical Chemistry A,
Journal Year:
2024,
Volume and Issue:
128(37), P. 7914 - 7938
Published: Sept. 9, 2024
Recent
investigations
of
diethyl
ether
(DEE)
high-temperature
pyrolysis
and
fuel-rich
oxidation
have
highlighted
the
failure
existing
kinetic
models
to
describe
experimental
CO
production.
The
DEE
chemistry
is
thus
investigated
through
ab
initio
calculations.
Geometries,
frequencies,
hindered-rotor
potentials
reactants,
products,
transition
states
key
reactions
(fuel
decomposition
radical
H-abstraction
reactions)
are
calculated
with
B2PLYP-D3/def2-TZVPD
method,
whereas
final
energies
refined
using
CCSD(T)/aug-cc-pV(D,T)Z.
Temperature-
pressure-dependent
rate
constants
then
derived
from
either
canonical
state
theory
(CTST)
or
ME/RRKM
analysis
inclusion
tunneling
effect
corrections
compared
measurements
when
available
as
well
previously
suggested
values.
This
new
information
merged
a
C
Journal of Mechanical Engineering,
Journal Year:
2019,
Volume and Issue:
unknown
Published: March 20, 2019
The
thermal
scheme
of
a
power
generating
plant
with
remote
heat
exchanger
operating
according
to
the
Brayton
cycle
energy
recuperation
is
considered.It
assumed
that
will
work
on
non-certified
(cheap)
biofuel.It
shown
that,
in
contrast
usual
cycle,
recuperation,
greatest
influence
efficiency
heating
temperature
working
medium
and
internal
main
components
plant,
such
as
compressor
turbine.Also,
higher
achieved
smaller
degrees
pressure
reduction
(increase)
turbine
(compressor).It
was
established
even
at
relatively
low
(500
ºC),
high
turbine,
it
possible
achieve
good
characteristics
whole.At
up
850
ºC,
40%
achieved,
but
this
case
cost
materials
production
increases.For
final
conclusion
about
possibility
using
proposed
its
efficiency,
necessary
conduct
additional
studies,
particular,
elements,
compressor,
others.
Fermentation,
Journal Year:
2025,
Volume and Issue:
11(2), P. 80 - 80
Published: Feb. 6, 2025
Bioethanol
is
a
renewable,
environmentally-friendly
biofuel
conventionally
produced
through
the
alcoholic
fermentation
of
sugary
or
starch-rich
substrates
by
microorganisms,
commonly
Yeast
Saccharomyces
cerevisiae.
Intermediates
industrial
wheat
flour
wet
milling
processing
to
starch,
such
as
A-starch
and
B-starch
milk,
are
cost-effective,
abundant,
non-seasonal
feedstocks
for
bioethanol
production.
This
study
evaluates
production
from
milk
mixtures
these
two
in
different
ratios
(1:3,
1:1,
3:1)
using
cold
hydrolysis
procedures
at
65
°C:
(i)
simultaneous
liquefaction
saccharification
(SLS)
followed
fermentation,
(ii)
alpha-amylase
(SSF).
The
results
demonstrated
that
SSF
SLS
equally
efficient
reaching
high
ethanol
yield
53
g
per
100
starch
93%
conversion
all
investigated
substrates.
Lower
levels
non-starch
components
which
typically
contribute
volatile
by-product
formation,
allowed
clear
distillate
profiles
terms
lower
content
aldehydes,
methanol,
acidity,
enhancing
purity
compared
milk.
Mixing
high-quality
with
low-cost
enables
higher
yield,
improved
quality,
energy
savings
industrial-scale
applications.
