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.
Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(3), P. 1675 - 1675
Published: Feb. 6, 2025
Conventional
hydrogen
production
processes,
which
often
involve
fossil
raw
materials,
emit
significant
amounts
of
carbon
dioxide
into
the
atmosphere.
This
study
critically
evaluates
feasibility
using
sugarcane
biomass
as
an
energy
source
to
produce
green
hydrogen.
In
2023/2024
harvest,
Brazil,
world’s
largest
producer,
processed
approximately
713.2
million
metric
tons
sugarcane.
yielded
45.68
sugar
and
29.69
billion
liters
first-generation
ethanol,
equivalent
0.0416
ethanol
per
kilogram
A
systematic
literature
review
was
conducted
Scopus
Clarivate
Analytics
Web
Science,
resulting
in
assessment
335
articles.
The
has
identified
seven
potential
biohydrogen
methods,
including
two
direct
approaches
from
second-generation
five
integrated
bioenergy
systems.
Experimental
data
indicate
that
can
yield
594
MJ
ton
biomass,
with
additional
recovery
lignin
combustion
(1705
ton).
Moreover,
advances
electrocatalytic
reforming
plasma-driven
have
demonstrated
high
conversion
efficiencies,
addressing
key
technical
barriers.
results
highlight
Brazil’s
strategic
integrate
within
its
existing
infrastructure.
By
leveraging
for
hydrogen,
country
contribute
significantly
global
transition
sustainable
while
enhancing
security.
Frontiers in Bioengineering and Biotechnology,
Journal Year:
2024,
Volume and Issue:
12
Published: Aug. 14, 2024
With
the
growing
demand
for
sustainable
development,
tobacco
stalks,
as
a
resource-rich
and
low-cost
renewable
resource,
hold
potential
producing
high-value
chemicals
materials
within
circular
economy.
Due
to
complex
unique
structure
of
stalk
biomass,
traditional
methods
are
ineffective
in
its
utilization,
making
pretreatment
lignocellulose
crucial
step
obtaining
products.
This
paper
reviews
recent
advancements
various
technologies
lignocellulosic
including
hydrothermal,
steam
explosion,
acid,
alkaline,
organic
solvent,
ionic
liquid,
deep
eutectic
solvent
pretreatment.
It
emphasizes
impact
efficiency
these
on
conversion
biomass
discusses
advantages
disadvantages
each
technique.
Finally,
forecasts
future
research
directions
lignocellulose,
providing
new
insights
enhancing
efficient
utilization.
