Applied Sciences,
Journal Year:
2024,
Volume and Issue:
15(1), P. 177 - 177
Published: Dec. 28, 2024
This
research
study
explores
the
technology
of
biomass
syngas
production
by
using
an
experimental
downdraft
fixed-bed
gasifier
coupled
to
a
two-cylinder
engine,
designed
and
implemented
at
Polytechnic
University
Valencia,
Spain.
Furthermore,
it
deals
with
analytical
relations
between
driving
thermodynamic
parameters
that
control
gasification
process,
in
order
contribute
development
theoretical
model
for
design
small-scale
facility.
Different
experiments
have
been
performed
investigate
variations
such
as
low
heating
values,
air–syngas
ratio,
reduction
combustion
temperature,
efficiency,
electrical
power
generation
during
continuous
functioning
The
results
obtained
show
value
is
directly
related
inlet
air
flow
rate,
so
increases
when
increases,
while
increase
makes
both
temperature
increase.
Moreover,
efficiency
motor–generator
reaches
maximum
0.204
(around
5
kW),
being
characterized
excellent
operating
range
air–fuel
ratio
Lignocellulose
is
an
important
renewable
biomass
resource.
Carbon-based
solid
acids
are
used
in
the
valorization
of
due
to
their
simple
preparation
and
excellent
catalytic
performance.
In
this
study,
magnetic
carbon
microspheres
catalyst
was
prepared
using
concentrated
sulfuric
acid
hydroxyethyl
sulfonic
as
sulfonating
agents.
Two
sulfonation
catalysts
were
applied
hydrolysis
typical
agricultural
waste
(rice
straw).
The
performance
conversion
reducing
sugar
compared,
glucose
yield
lower
than
30%.
obtained
a
higher
pentose
(76.67%)
that
(74.25%)
110
minutes.
green
sulfonator
similar
under
best
experimental
conditions
(0.04g
rice
straw,
0.04g
catalyst,
H2O/GVL
ratio
8:2,
110min
at
140
°C).
Its
attributed
medium
B/L
density
on
surface.
addition,
can
be
effectively
separated
from
reaction
residue
system.
This
work
provides
system
for
high-value
utilization
sources.
Waste,
Journal Year:
2025,
Volume and Issue:
3(1), P. 4 - 4
Published: Jan. 9, 2025
This
study
investigates
the
properties
of
Benitaka
grape
pomace
(Vitis
vinifera
L.),
a
byproduct
wine
industry,
focusing
on
its
potential
for
applications
in
circular
economy
and
biorefinery
processes.
The
analysis
covers
range
physical,
chemical,
structural
characteristics,
including
composition
proteins,
moisture,
lipids,
ash,
sugars,
fiber
fractions
(such
as
neutral-detergent
fiber,
cellulose,
lignin,
hemicellulose),
pH,
acidity,
gross
energy,
well
bioactive
compounds
such
total
phenolics,
flavonoids,
anthocyanins,
antioxidant
capacity.
Advanced
characterization
techniques,
nitrogen
adsorption/desorption
isotherms,
Fourier-transform
infrared
spectroscopy,
differential
scanning
calorimetry,
electron
microscopy,
high-performance
liquid
chromatography
coupled
with
mass
spectrometry,
were
employed.
results
revealed
an
acidic
pH
4.05
titratable
acidity
1.25
g
tartaric
acid
per
100
g.
energy
was
3764
kcal
kg−1,
indicating
high
capacity,
similar
to
wood
chips.
exhibited
hygroscopicity
(31
50
moisture
g),
levels
significant
values
phenolics
(5956.56
mg
GAE
g−1),
flavonoids
(1958.33
CAT
anthocyanins
(66.92
C3G
g−1).
Antioxidant
showed
promising
results,
DPPH
FRAP
20.12
16.85
μmol
TEAC
g−1
extract,
respectively.
not
only
validates
existing
data
but
also
provides
new
insights
into
hemicellulose
lignocellulosic
phase
transitions,
highlighting
resource
sustainability
industry
