Scientific Journal of King Faisal University Basic and Applied Sciences,
Год журнала:
2024,
Номер
unknown, С. 1 - 6
Опубликована: Дек. 11, 2024
Biodiesel
is
a
blend
of
mono-alkyl
esters
utilized
as
an
alternative
to
traditional
diesel
fuel.
It
produced
by
transesterifying
vegetable
oils
or
animal
fats
with
light
alcohol.
This
study
valorizes
two
Euphorbiaceae
plants,
Jatropha
curcas
L.
and
Ricinus
communis
L.,
which
can
thrive
in
the
most
arid
lands
withstand
harsh
weather
conditions.
Their
mature
seeds
produce
significant
amount
through
simple
heating
process
methanol,
resulting
biodiesel
shallow
sulfur
content.
Selecting
these
plants
energy
crops
justified
their
readily
available
containing
non-edible
high-energy-value
properties
comparable
diesel.
The
encouraging
findings
show
that
biodiesels
closely
resemble
petrodiesel
fuel
characteristics,
making
them
suitable
substitutes
for
fossil
diesel,
meeting
ASTM
D6751
EN
14214
standards.
KEYWORDS
Alternative
fuels,
euphorbiaceae,
green
revolution,
renewable
biofuels,
sustainability,
oil
Clean Technologies and Environmental Policy,
Год журнала:
2024,
Номер
26(4), С. 943 - 997
Опубликована: Фев. 2, 2024
Abstract
Sustainable
development
is
imperative,
and
the
worldwide
energy
production
must
focus
on
transition
from
petroleum
derivatives
to
biomass-based
biofuels
bioproducts
achieve
a
bio-based
economy.
The
global
interest
in
processing
of
waste
biomass
obtain
products
continuously
increasing.
However,
biorefineries
have
not
yet
been
consolidated.
effective
conversion
components
for
generation
value-added
biochemicals
determining
factor
economic
success
biorefineries.
Therefore,
exhaustive
research
has
performed
consolidate
biorefinery
industry.
This
review
summarizes
current
advances
liquid
biofuel
solid
catalysts
prepared
biomass,
as
well
their
advantages,
drawbacks,
statistical
data.
It
offers
an
extensive
perspective,
covering
conventional
methods
cutting-edge
techniques
such
biochemical
thermochemical
technologies
(e.g.,
hydrolysis,
fermentation,
pyrolysis,
gasification)
produce
bioalcohols,
biodiesel,
renewable
diesel,
bio-jet,
bio-oil.
In
addition,
preparation
heterogeneous
using
residual
different
synthesis
routes
role
were
analyzed.
contributes
analysis
importance
identifying
valorizing
wide
spectrum
raw
materials
(i.e.,
urban,
forestry,
industrial,
agricultural)
that
potential
be
used
catalyst
precursors
feedstock.
Finally,
techno-economic
analysis,
main
challenges,
future
scope
diverse
prepare
are
discussed.
examines
numerous
aspects
catalysts,
thus
providing
relevant
information
researchers,
students,
policymakers,
industry
experts.
Graphical
abstract
Catalysts,
Год журнала:
2024,
Номер
14(4), С. 244 - 244
Опубликована: Апрель 6, 2024
This
study
used
a
novel
combination
of
cellulose
nanocrystals
(CNCs)
and
calcium
oxide
(CaO)
nanocomposite
(CaO/CNCs)
for
the
production
biodiesel
from
waste
cooking
oil.
The
filter
paper
was
as
raw
source
to
produce
CNCs
acid
hydrolysis
with
sulfuric
acid.
as-synthesized
CaO/CNC
is
recyclable
environmentally
friendly
characterized
using
Fourier
transform
infrared
spectroscopy,
energy
dispersive
X-ray,
scanning
electron
microscopy,
X-ray
diffraction.
optimum
process
parameters
investigated
are
20:1
methanol-to-oil
molar
ratio,
3-weight
percent
catalyst
concentration,
60
°C
temperature,
90
min
reaction
time.
Under
conditions,
yield
84%
obtained.
achieved
five
times
reusability,
indicating
its
effectiveness
reusability
in
transesterification
reaction.
synthesized
chemical
composition
examined
FTIR,
GCMS,
1H-NMR,
13C-NMR,
properties,
including
specific
gravity,
color,
flash
point,
cloud
pour
viscosity,
sulfur
content,
sediments,
water
total
number,
cetane
corrosion
test,
were
ascertained
ASTM
standard
practices.
outcomes
determined
fulfill
global
standards
(ASTM
951,
6751).
Five
successive
processes
test
regeneration
catalyst;
first
three
showed
no
distinct
change,
while
fifth
cycle
reduction
up
79%.
innovative
composite
oil
stable,
affordable,
extremely
successful
long-term
generation.
RSC Advances,
Год журнала:
2025,
Номер
15(9), С. 7050 - 7068
Опубликована: Янв. 1, 2025
This
study
investigates
the
use
of
bean
husks
as
a
precursor
for
synthesis
an
efficient
and
regenerable
catalyst,
with
aim
offering
economical
sustainable
alternative
biodiesel
production.
Residual
shell
biomass
(RBBH)
was
calcined
at
different
temperatures
(350-500
°C)
times
(1-4
h)
to
determine
optimum
conditions.
The
catalyst
obtained
characterized
by
various
methods,
such
X-ray
Diffraction
(XRD),
Fourier
Transform
Infrared
Spectroscopy
(FT-IR),
Scanning
Electron
Microscopy
(SEM),
Energy
Dispersive
(EDS)
Thermogravimetric
Analysis
(TG/DTG).
results
showed
that
contains
metal
oxides
carbonates
active
sites.
In
addition,
influence
reaction
conditions
evaluated
in
ranges
temperature
(60-120
°C),
time
(0.5-2.5
h),
MeOH
:
oil
molar
ratio
(12
1-28
1)
concentration
(2-10%
weight).
maximum
ester
content
(97.6%)
achieved
120
°C,
2
h,
20
1
8%
catalyst.
After
partial
deactivation
solid
it
regenerated
KOH,
yielding
biodiesels
over
75%
three
consecutive
cycles,
demonstrating
its
efficiency
potential
continuous
use.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Июнь 4, 2024
Abstract
Recent
years
have
seen
an
increase
in
research
on
biodiesel,
environmentally
benign
and
renewable
fuel
alternative
for
traditional
fossil
fuels.
Biodiesel
might
become
more
cost-effective
competitive
with
diesel
if
a
solid
heterogeneous
catalyst
is
used
its
production.
One
way
to
make
biodiesel
affordable
employ
manufacturing.
Based
X-ray
diffraction
(XRD)
Fourier
Transform
infrared
spectroscopy
(FTIR),
the
researchers
this
study
proved
their
hypothesis
that
iron
oxide
core–shell
nanoparticles
were
generated
during
green
synthesis
of
iron-based
(FeNPs)
from
Camellia
Sinensis
leaves.
The
fabrication
spherical
was
successfully
confirmed
using
scanning
electron
microscopy
(SEM).
As
catalyst,
synthesised
has
shown
potential
facilitating
conversion
algae
oil
into
biodiesel.
With
optimal
parameters
(0.5
weight
percent
catalytic
load,
1:6
oil—methanol
ratio,
60
°C
reaction
temperature,
1
h
30
min
duration),
93.33%
yield
attained.
This
may
be
due
acid–base
property,
chemical
stability,
stronger
metal
support
interaction.
Furthermore,
employed
transesterification
reactions
five
times
after
regeneration
n-hexane
washing
followed
by
calcination
at
650
3
h.
Catalysis Science & Technology,
Год журнала:
2024,
Номер
14(14), С. 3864 - 3877
Опубликована: Янв. 1, 2024
Calcined
sodium
citrate
as
a
novel
and
cost-effective
heterogeneous
catalyst
with
outstanding
efficiency
in
the
transesterification
of
canola
waste
cooking
oils.
