Energies,
Год журнала:
2024,
Номер
17(24), С. 6407 - 6407
Опубликована: Дек. 19, 2024
This
study
is
related
to
producing
a
set
of
fatty
acid
esters
from
different
vegetable
oils
and
C1–C12
alcohols.
A
total
66
products
were
synthesized.
The
obtained
characterized
by
composition,
density,
viscosity,
saponification
value,
iodine
low-temperature
properties,
oxidative
stability.
It
was
established
that
the
as
well
alcohol,
used
has
significant
impact
on
properties.
Comparing
physicochemical
properties
with
existing
standards
specifications,
it
proposed
use
for
industrial
applications.
In
particular,
rapeseed
oil
methyl
are
an
ideal
candidate
application
biodiesel,
while
transesterification
soybean
oil,
sunflower
coconut
higher
alcohols
led
promising
bio-lubricants.
Castor
alkyl
could
potentially
be
utilized
base
due
their
excellent
viscosity
Catalysis Research,
Год журнала:
2025,
Номер
05(01), С. 1 - 16
Опубликована: Янв. 8, 2025
This
study
aimed
to
synthesize
nickel
oxide
(NiO)
and
cobalt
(Co<sub>3</sub>O<sub>4</sub>)
based
catalysts
for
synthesizing
biodiesel
from
<em>Citrullus
colocynthis
</em>oil.
Cobalt-nickel
mixed
made
by
co-precipitation
technique
with
different
Cobalt
Nickel
ratios
named
Co:Ni
(50:50),
(67:33),
(33:67).
The
Characterization
of
these
synthesized
was
performed
XRD
SEM
analysis.
transesterification
process
checked
the
catalytic
activity
catalysts,
it
found
that
(33:67)
gave
maximum
yield,
i.e.,
90%.
experimental
conditions
yield
were
65°C
temperature,
Molar
ratio
methanol
oil
be
9:1,
time
required
reaction
taken
2.5
h,
catalyst
loading
3.5
wt%.
exhibits
strong
stability,
making
a
viable
heterogeneous
synthesis.
Five
recyclability
studies
conducted
in
present
study.
research's
novelty
is
varying
comparing
their
performance
production.
Gazi Üniversitesi Fen Bilimleri Dergisi Part C Tasarım ve Teknoloji,
Год журнала:
2025,
Номер
unknown, С. 1 - 1
Опубликована: Март 6, 2025
Biomass
energy
is
a
renewable
source
obtained
by
converting
organic
wastes
and
plant
materials
into
energy.
Biomass,
which
has
an
increasing
importance
in
consumption
recent
years,
contributes
to
sustainability
carbon
emission
reduction
targets
as
alternative
fossil
fuels.
Biodiesel
derived
from
biomass
used
motor
fuel.
Due
its
feature
lower
emission,
biodiesel
attracts
attention
environmentally
friendly
fuel
alternative.
This
study
examines
the
utilisation
of
waste
oils
public
transport
vehicles
within
province
Ankara,
impact
this
on
footprint.
The
conversion
represents
promising
that
simultaneously
advances
environmental
fosters
diversity.
presents
numerical
analysis
usage
emissions
fleet,
specifically
buses.
Furthermore,
practice
local
economy
long-term
implications
for
sustainable
urban
transportation
are
also
assessed.
In
870522
liters
oil
collected
monthly
basis,
resulting
76%
due
production
739943
these
oils.
As
result,
consumption,
efficiency
analyses
show
economically
It
expected
recycling
will
improve
management
reduce
negative
impacts
environment.
ChemBioEng Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 28, 2025
Abstract
Large‐scale
biodiesel
production
faces
a
critical
challenge
due
to
its
relatively
high
cost,
compared
fossil‐based
diesel,
primarily
driven
by
expensive
feedstocks
and
processes.
To
address
this,
there
is
an
urgent
need
for
the
development
continuous
improvement
of
cost‐effective
eco‐friendly
technologies.
This
paper
comprehensively
reviews
techniques,
focusing
on
transesterification
reactor.
Recent
advancements
in
reactor
technologies,
including
tubular/plug‐flow
rotating
reactors,
are
discussed
detail.
The
merits
limitations
each
type
critically
analyzed
provide
insights
into
their
applicability
production.
Life
cycle
assessment
techno‐economic
analysis
using
reactors
discussed.
Furthermore,
explores
prospects
developing
innovative
systems,
emphasizing
sustainability
integrating
biorefinery
concepts
waste
feedstocks.
review
will
guide
future
research
efforts
toward
scalable
sustainable
Chemical Engineering & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 15, 2025
Abstract
Ensuring
a
clean
and
secure
environment
has
consistently
presented
difficulty
for
researchers
worldwide.
In
order
to
accomplish
this
objective,
attention
been
drawn
biofuels.
The
current
study
investigates
the
synthesis
of
biodiesel
from
stimulated
composite
sludge.
A
transesterification
method
was
developed
by
examining
effects
process
variables
including
preheating
temperature,
reaction
time,
methanol‐to‐oil
ratio
catalyst
concentration
in
estimate
lowest
feasible
viscosity
maximum
ester
recovery.
optimum
kinematic
(3.4
cSt)
with
recovery
(78.93
%)
obtained
dairy
waste
sludge
at
5:1
molar
40
°C
keeping
that
temperature
min
existence
1
%
KOH.
These
findings
were
based
on
measurements
biofuel
viscosity.
