Taken
tobacco
waste
as
substrate,
biohydrogen
production
capacity
from
dark
fermentation
(DF)
and
photo
(PF)
with
asynchronous
saccharification
(ASF)
simultaneous
(SSF)
was
investigated.
PF
SSF
showed
better
hydrogen
effect.
Then,
the
employment
of
hydrothermal
pretreatment
(HP)
alone
combined
bio-surfactants
on
to
promote
reducing
sugar
yield
evaluated.
HP
with110℃and
40
min
0.06
g/L
bio-surfactant
Rhamnolipids
(RLs)
addition
obtained
highest
concentration
11.86±1.1
611.3±13
mL,
increased
by
180.37
%
61.82
compared
untreated
waste,
respectively.
The
variable
Gompertz
model
could
shorten
lag
phase
time.In
addition,
result
RLs
pre-treatment
intensity
can
be
reduced
help
RLs.
Pearson’s
r
value
had
most
significant
influence
yield.
Journal of Composites Science,
Journal Year:
2024,
Volume and Issue:
8(4), P. 116 - 116
Published: March 22, 2024
The
development
of
new
composite
materials
with
specific
properties
and
reduced
environmental
pollution
can
be
achieved
by
the
incorporation
agricultural
residues,
whose
morphology
is
strongly
affected
their
variety
growing
conditions.
Herein,
functional
a
cement-free
geopolymer
reinforced
straw
from
two
wheat
varieties
(Ada
Malibu)
were
investigated
through
different
pre-treatment
methods
surface
modification
silane
coupling
agents.
characterization
composites
involved
SEM-EDS,
TGA,
FTIR,
gas
physisorption
analysis
supplemented
mechanical
strength
moisture
ingress
measurements.
Mild
(23
°C)
severe
(100
physical
chemical
soaking
in
7.3
M
isopropanol
solution
applied
on
straw.
Tetraethoxysilane
(TEOS)
octadecylamine
was
employed
for
modification.
set
compositions
prepared
untreated,
pre-treated,
modified
straws.
results
revealed
hot
method
caused
higher
degradation
siliceous
layers
straw,
especially
Ada
variety.
TEOS
resulted
irregular
coating
formation
regardless
method.
Despite
good
interfacial
bonding
matrix,
reduced,
although
resistance
to
water
slightly
increased.
Comparing
both
varieties,
showed
better
performance
than
Malibu.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(11), P. 744 - 744
Published: Oct. 23, 2024
Uncovering
the
structure
of
lignin
from
biorefinery
has
an
important
effect
on
catalytic
depolymerization
and
production
bioenergy.
In
this
study,
two
lignins
were
isolated
tobacco
stalks
via
alkaline
deep
eutectic
solvent
(DES)
catalyzed
delignification
processes,
heterogeneity
structural
characteristics
elucidated
by
gel
permeation
chromatography,
2D-HSQC,
FT-IR,
etc.,
to
understand
relationship
between
thermal
lignin.
It
was
found
that
presented
various
components,
in
which
predominant
interunit
linkages
black
liquor
are
β-O-4
β-β
linkages,
disappeared
DES
treatment.
exhibited
lower
molecular
weights
yields
than
Thermogravimetric
analysis
fixed-bed
pyrolysis
also
performed
investigate
behavior.
The
results
show
approach
can
improve
bio-oil
highlight
potential
as
a
promising
feedstock
process.
This
work
provides
valuable
example
conversion
into
products.
Agriculture,
Journal Year:
2024,
Volume and Issue:
14(7), P. 1185 - 1185
Published: July 18, 2024
The
rotor
cage
is
a
key
component
of
the
classifying
device,
and
its
structural
parameters
directly
affect
classification
performance.
To
improve
performance
straw
micro-crusher
this
paper
proposes
CFD-ML-GA
(Computational
Fluid
Dynamics-Machine
Learning-Genetic
Algorithm)
method
to
quantitatively
analyze
coupled
effects
on
Firstly,
CFD
orthogonal
experimental
methods
are
used
qualitatively
investigate
number
blades,
length
blade
installation
angle
conclusion
obtained
that
exerts
greatest
effect
performance,
while
blades
has
least
effect.
Subsequently,
four
machine
learning
algorithms
build
cut
size
prediction
model,
and,
after
comparison,
Random
Forest
Regression
(RFR)
model
selected.
Finally,
RFR
integrated
with
Genetic
Algorithm
(GA)
for
quantitative
parameter
optimization.
analysis
results
GA
indicate
29
232.8
mm,
36.8°,
decreases
47.6
μm
sharpness
index
improves
0.62.
Compared
optimal
solution
from
experiment,
reduces
by
9.33%
9.68%.
This
validates
feasibility
proposed
method.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(12), P. 889 - 889
Published: Dec. 4, 2024
Sulfite-catalyzed
acid
pretreatment
to
overcome
the
inherent
recalcitrance
of
biomass
offers
a
significant
advantage
in
terms
obtaining
high
glucose
conversion.
However,
residual
lignin
after
enzymatic
hydrolysis
has
not
been
fully
exploited.
Herein,
this
study
introduced
joint
approach
using
sulfite-catalyzed
(SPROL)
and
pyrolysis
upgrade
tobacco
stalk
produce
fermentable
sugar,
resulting
is
used
bio-oil
bio-char.
The
results
suggest
that
SPROL
pretreated
yields
cellulose-based
selectivity
75.9%
with
15
FPU/g
substrate
enzyme
dosage
at
50
°C
72
h
enzymolysis.
Lignin
characterization
reveals
sulfonation
occurred
during
pretreatment,
as
sulfonating
agent
increased,
thermal
stability
residue
decreased.
After
sample
600
for
30
min,
approximately
22%,
33%,
45%
undergoes
conversion
into
bio-oil,
bio-char,
gas
products,
respectively.
analysis
demonstrated
acetic
most
abundant
identified
GC-MS
component
around
69.91%
optimal
condition,
which
implied
it
could
be
value
when
utilized
pyroligneous
acid.
This
research
provides
synthetic
SPORL
technique
process
commercial
utilization
agricultural
waste
value-added
products.
Taken
tobacco
waste
as
substrate,
biohydrogen
production
capacity
from
dark
fermentation
(DF)
and
photo
(PF)
with
asynchronous
saccharification
(ASF)
simultaneous
(SSF)
was
investigated.
PF
SSF
showed
better
hydrogen
effect.
Then,
the
employment
of
hydrothermal
pretreatment
(HP)
alone
combined
bio-surfactants
on
to
promote
reducing
sugar
yield
evaluated.
HP
with110℃and
40
min
0.06
g/L
bio-surfactant
Rhamnolipids
(RLs)
addition
obtained
highest
concentration
11.86±1.1
611.3±13
mL,
increased
by
180.37
%
61.82
compared
untreated
waste,
respectively.
The
variable
Gompertz
model
could
shorten
lag
phase
time.In
addition,
result
RLs
pre-treatment
intensity
can
be
reduced
help
RLs.
Pearson’s
r
value
had
most
significant
influence
yield.
