Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Июнь 3, 2022
Abstract
A
deeper
understanding
of
the
kinetics
and
thermodynamics
parameters
sugarcane
bagasse
(SCB)
thermal
degradation
could
define
appropriate
conditions
for
primary
biorefining
in
production
renewable
fuels.
In
this
work,
SCB’s
high
polymers
are
investigated
through
thermogravimetric
data.
From
data,
model-free
model
fitting
methods
used
to
calculate
apparent
activation
energies
(
E
a
)
other
related
kinetic
parameters.
DTG
curves
present
three
major
peaks
associated
with
pseudo-components
(PSEs):
PSE
1
(hemicelluloses
+
extractives
lignin),
2
(cellulose
3
(lignin
residual
holocelluloses).
An
essential
advance
is
quantitative
interpretation
process
by
multi-stage
modeling
governed
diffusion-controlled
reactions
order-based
models.
The
Kissinger-Akahira-Sunose
method
provided
ranges
124–154,
147–153,
230–530
kJ‧mol
-1
,
while
obtained
Flynn-Wall-Ozawa
were
120–152,
144–150,
232–545
both
1,
2,
3,
respectively.
Data
support
calculation
many
critical
operating
biorefinery
process,
such
as
pretreatment
minimum
temperature.
SCB
lead
up
10,
0.5,
11%
respectively,
at
473.15
K
200
min.
Thermodynamic
∆H
∆G
∆S
determined
endothermic
non-spontaneous
degradation.
The Canadian Journal of Chemical Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 27, 2025
Abstractas
The
agricultural
sector
is
experiencing
a
surge
in
waste
generation
due
to
population
growth,
creating
an
urgent
need
convert
byproducts
into
value‐added
products.
Maize
(
Zea
mays
L.),
leading
global
crop,
produces
significant
byproducts,
such
as
corn
cob,
which
are
often
undervalued.
Biomass,
including
promising
carbon‐neutral
energy
source.
While
combustion
commonly
used,
pyrolysis
gaining
traction
its
ability
generate
solid
(biochar),
liquid
(bio‐oil),
and
gaseous
products,
each
with
various
applications.
This
study
presents
systematic
literature
review
on
the
of
utilizing
three
databases:
Scopus,
Web
Science,
Springer.
search
resulted
portfolio
composed
409
research
papers.
Normalized
Index
for
Ranking
Papers
(NIRP)
method
was
employed
rank
selected
papers,
followed
by
bibliometric
analyses.
identifies
key
trends,
publication
dynamics,
influential
works
field.
It
highlights
China's
role
output
citation
impact
provides
insights
evolution
topics
methodologies.
emphasizes
significance
biomass
viable
alternative
fossil
fuels,
commercial
adsorbents,
catalyst
supports,
fertilizers,
providing
both
economic
environmental
benefits.
By
examining
current
state
research,
this
work
seeks
inform
future
studies
promote
advancement
efficient
eco‐friendly
conversion
technologies.
findings
aim
encourage
further
exploration
pyrolysis,
highlighting
potential
contribute
sustainable
resource
management
reduce
reliance
non‐renewable
resources.
Sustainability,
Год журнала:
2024,
Номер
16(11), С. 4784 - 4784
Опубликована: Июнь 4, 2024
Pretreatment
is
an
essential
step
for
breaking
the
recalcitrant
structure
of
lignocellulosic
biomass
and
allowing
conversion
to
high-value-added
chemicals.
In
this
study,
coconut
fiber
was
subjected
three
pretreatment
methods
compare
their
impacts
on
biomass’s
structural
characteristics
efficiency
in
fractionating
biomass.
This
comparative
approach
conducted
identify
mild
conditions
that
efficiently
extract
lignin
recover
cellulose-rich
pulp
production
bioproducts.
To
end,
autohydrolysis,
alkaline,
organosolv
pretreatments
were
performed
under
different
experimental
conditions,
physicochemical
properties
samples
evaluated
using
scanning
electron
microscopy
(SEM),
Fourier
transform
infrared
spectroscopy
(FT-IR),
thermogravimetric
analysis
(TGA),
chemical
characterization
cellulose,
hemicellulose,
fractions.
Therefore,
efficient
identified
pretreat
fibers
with
extended
understanding
process
lignocellulose.
Great
delignification
yield
obtained
>
alkaline
extraction
autohydrolysis
selected
2
h
at
185
°C
presence
a
catalyst,
namely,
0.5
M
NaOH,
55
20
min
195
°C,
respectively.
FT-IR
revealed
predominance
hydroxyl
groups
from
pretreatment,
showing
higher
degradation
cellulose
concentration
these
samples.
TGA
mass
loss
curves
similar
behaviors
but
patterns
intensities,
MVE
showed
differences
surfaces
each
sample.
The
comparison
parameters
allowed
identification
suitable
method,
analyses
specific
could
be
according
method
used.
results
are
great
importance
developing
sustainable
effective
industrial
processes.
