Sustainability,
Год журнала:
2024,
Номер
16(24), С. 11234 - 11234
Опубликована: Дек. 21, 2024
This
paper
characterizes
the
carbonization
process
of
biomass
wastes,
including
sunflower
husk
pellets
and
sponge
stalk
pellets,
at
temperatures
450
550
°C.
These
studies
are
important
because
reductions
in
wood
resources
for
preparation
barbecue
charcoal,
as
well
agricultural
benefits
terms
soil
additives.
In
energy
balance,
obtained
pyrolysis
ensures
autothermal
process.
The
heating
characteristics
fixed
bed
showed
that,
due
to
difference
bulk
density,
temperature
reached
°C
110
min,
whereas
same
200
min.
Additionally,
used
increased
from
2.9
kWh
3.3
°C,
while
3.5
3.9
kWh.
combustion
assessed
using
TGA
that
leads
biochar
with
a
higher
activity
than
derived
sponge.
According
experimental
results,
has
water
content
capacity
absorption
rate
pellets.
Energy Science & Engineering,
Год журнала:
2024,
Номер
12(8), С. 3524 - 3539
Опубликована: Июль 9, 2024
Abstract
Pyrolysis
of
two
types
pellets
(
T
1
:
100%
wheat
straw,
and
2
70%
straw;
10%
sawdust,
biochar,
bentonite
clay)
was
performed
in
a
pilot‐scale
reactor
under
nitrogen
environment
at
20°C
to
700°C.
This
investigate
slow
pyrolysis
yields
gas
composition
as
function
temperature
residence
time.
The
experimental
data
were
obtained
between
300°C
600°C,
with
time
90
min,
flow
rate
50
cm
3
/min,
heating
20°C/min.
results
indicated
that
the
maximum
is
605°C
55
min.
product
analysis
showed
proportion
higher
than
biochar
bio‐oil.
conversion
efficiency
increased
temperatures
varied
66%
76%.
carbon
dioxide
main
component
produced
gas,
concentration
63.6%
for
.
longer
syngas
(CO
+
H
)
both
treatments.
Nevertheless,
had
high
content
retained
calorific
value,
indicating
ideal
utilization
route
straw
pellet
biomass
biochar.
Journal of the Air & Waste Management Association,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 3, 2025
Densification
of
biomass
through
pelletizing
offers
a
promising
approach
to
producing
clean
biofuels
from
renewable
resources.
This
study,
which
investigates
the
impact
additive
blends
on
wheat
straw
pellet
making
and
upgrading
physiochemical
properties,
has
revealed
exciting
possibilities.
Five
additives,
including
sawdust
(SD),
bentonite
clay
(BC),
corn
starch
(S),
crude
glycerol
(CG),
biochar
(BioC),
were
chosen
for
this
study.
Pellets
made
seven
different
combinations
using
laboratory-scale
mill.
The
resulting
pellets'
physical
elemental
properties
assessed
against
ISO
17,225-8
standards.
Compared
control
pellets,
(T3-T7)
exhibited
significant
improvements
in
mechanical
durability
(80%
99%),
tensile
strength
(0.36
MPa
2.09
MPa),
bulk
density
(244
kg/m3
665.21
kg/m3),
all
meeting
AdditionaUF000llylly,
these
maintained
low
fines
content
(<2%)
water
absorption
capacity
(<2%,
except
T1
T5).
Furthermore,
fixed
carbon
increased
11.1%
30.90%,
energy
rose
17.02
MJ/kg
20.36
MJ/kg,
showed
synergistic
effect
blending
additives.
These
findings
underscore
potential
as
viable
source
bioenergy
production
pelletization,
offering
hopeful
outlook
future
energy.
However,
further
research
is
necessary
optimize
mixing
ratios
even
greater
quality.
Processes,
Год журнала:
2024,
Номер
12(5), С. 863 - 863
Опубликована: Апрель 25, 2024
This
research
paper
presents
a
comprehensive
study
on
the
combustion
of
wheat
straw
pellets
in
10
kW
fixed-bed
reactor
through
Computational
Fluid
Dynamics
(CFDs)
simulation
and
experimental
validation.
The
developed
2D
CFDs
model
ANSYS
meshing
simulates
process
Fluent
software
2021
R2.
investigation
evaluates
key
parameters
such
as
equivalence
ratio,
heating
value,
temperature
distribution
within
to
enhance
gas
production
efficiency.
simulated
results,
including
produced
gases
(CO2,
CO,
CH4),
demonstrate
significant
agreement
with
data.
impact
ratio
conversion
efficiency
lower
value
(LHV)
is
systematically
explored,
revealing
that
an
0.35
optimal
for
maximum
resulting
producer
composition
at
this
optimum
condition
includes
CO
(~27.67%),
CH4
(~3.29%),
CO2
(~11.09%),
H2
N2
(~51%).
findings
contribute
valuable
insights
into
improving
reactors,
offering
essential
information
performance
sustainable
optimized
combustion.
Energy Sources Part A Recovery Utilization and Environmental Effects,
Год журнала:
2024,
Номер
46(1), С. 8671 - 8685
Опубликована: Июль 1, 2024
Amidst
the
energy
crisis,
biomass
has
emerged
as
a
pivotal
solution,
given
its
abundant
distribution,
impressive
storage
capabilities,
and
carbon-neutral
nature.
The
study
aims
to
develop
biofuels
of
good
quality
using
various
agroalimentary
waste
products,
Examining
pelletization
process
including
wet
olive
pomace
(wet
(2
phases)(OP)),
de-oiled
(DOP),
stones
(OS),
almond
shells
(AS),
this
research
assesses
effectiveness
in
enhancing
both
bulk
densities,
highlighting
it
optimal
method
for
such
enhancement.
preparation
these
without
binder
yielded
promising
results
terms
density,
hardness,
calorific
value,
ash
content.
Tests
comparing
commercial
pellets
(COP)
showed
following:
Using
with
moisture
content
below
15%,
granulometry
1
mm
or
smaller,
no
produces
high-quality
pellets.
These
had
high
density
(889,
675,
643,
621
kg/m3),
hardness
(99.18%,
99.80%,
98.92%,
99.14%),
heating
values
(18.93,
20.29,
22.51,
20.38
MJ/kg)
at
average
temperatures
pressures.
are
comparable
those
products.
In
general,
solid
offer
credible
alternatives
produce
form
electricity,
heat,
both,
processes,
combustion,
pyrolysis,
gasification.
knowledge
gained
from
is
very
helpful
developing
improving
bioenergy
systems
promoting
sustainable
methods
producing
agricultural
wastes.
Energies,
Год журнала:
2024,
Номер
17(16), С. 3960 - 3960
Опубликована: Авг. 9, 2024
This
paper
presents
the
findings
of
a
study
pelleting
process
pine
sawdust
with
addition
waste
in
form
potato
pulp
(as
natural
binder),
context
producing
fuel
pellets.
The
was
carried
out
for
and
mixture
(10,
15,
20,
25%).
highest
moisture
content
obtained
case
pellets
produced
from
straw
25%
content,
i.e.,
26.54%
(with
85.08%).
Increasing
10
to
reduced
power
demand
pelletizer
by
approx.
20%
(from
7.35
5.92
kW).
density
values
made
(over
1000
kg∙m−3)
10%
make
it
possible
conclude
that
meet
requirements
ISO
17225-2:2021-11
standard.
0
caused
slight
decrease
heat
combustion,
20.45
20.32
MJ∙kg−1,
as
well
calorific
value,
19.02
18.83
MJ∙kg−1
(both
dry
matter
mixture).
results
laboratory
tests
were
used
verify
densification
mixtures
under
industrial
conditions
at
PANBAH
plant,
using
5%,
10%,
pulp.
Industrial
research
also
confirmed
use
significantly
reduces
pelletizer,
increases
kinetic
strength
