Scale‐Up of Tailor‐Made Onsite Enzyme Blend From Cassava Peels for Industrial Bioethanol Production
The Scientific World JOURNAL,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
Bioethanol
production
is
one
of
the
key
alternatives
for
fossil
fuel
use
due
to
climate
change.
The
study
seeks
upscale
tailor‐made
onsite
enzyme
blends
bioconversion
cassava
peels
bioethanol
in
simultaneous
saccharification
and
fermentation
(SSF)
process
using
peels‐degrading
fungi.
starch
cellulose
contents
were
determined.
results
showed
significant
levels
(39.78%)
(31.21%),
indicating
that
are
valuable
raw
materials
production.
To
investigate
cassava‐degrading
microbes,
Aspergillus
niger
demonstrated
highest
activity
with
a
diameter
zone
clearance
16
mm.
Tailor‐made
produced
A
.
various
substrate
concentrations
(1%,
3%,
5%,
8%,
10%)
milled
at
periods
2,
4,
6,
8,
10
days
spore
concentration
2.1
×
5
cells/mL.
amylolytic
cellulolytic
activities
determined
as
4.759
U/mL
4.265
U/mL,
respectively,
5%
6‐day
optimal
conditions.
blend
was
upscaled
three
vessels,
thus
0.250
L
flask,
1.0
fermenter
optimized
conditions
SSF
These
firstly
applied
flask
process,
fixed
dose
20
mL
1.5
g
Saccharomyces
cerevisiae
varying
10%,
20%
ethanol
analyzed
daily
days.
theoretical
yields
recorded
15.64%,
16.02%,
14.91%
0.250,
1,
volumes
obtained
different
demonstrate
potential
industrial
Ghana.
Язык: Английский
Comparative Study of Plant‐Based Antioxidants on the Stability of Soybean and Beef Tallow Biodiesels
Energy Science & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 3, 2025
ABSTRACT
Biodiesel
is
a
renewable
alternative
fuel,
but
its
oxidative
instability
reduces
quality
and
performance
over
time.
This
study
explicitly
aimed
to
investigate
the
efficacy
of
natural
antioxidants—acerola,
soursop,
mango,
pitanga
leaves—and
compare
their
synthetic
antioxidant
butylated
hydroxytoluene
(BHT)
in
enhancing
thermooxidative
stability
soybean
ethyl
bovine
tallow
methyl
biodiesels.
Biodiesels
were
synthesized
stored
under
controlled
conditions
(ambient
60°C)
for
up
1848
h.
Analytical
results
showed
that
biodiesel
treated
with
BHT
maintained
acidity
index
(AI)
values
below
0.5
mg
KOH/g
after
1176
h,
while
untreated
exceeded
1.0
within
504
Kinematic
viscosity
BHT‐treated
samples
remained
acceptable
limit
6.0
mm²/s
compared
biodiesel,
which
surpassed
at
Natural
antioxidants
exhibited
varying
degrees
efficacy,
soursop
extracts
achieving
35%–50%
improvements
biodiesel.
Thermogravimetric
analysis
indicated
additives
delayed
onset
degradation
temperatures
by
10°C–15°C.
These
findings
demonstrate
plant‐based
significantly
enhance
stability,
offering
70%
effectiveness
BHT,
highlight
potential
as
sustainable
alternatives
improving
quality.
Язык: Английский