A novel mesoporous catalyst from Ulva lactuca for biodiesel production from waste cooking oil using a microwave-assisted technique
Obie Farobie,
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Risalania Aslamah,
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Apip Amrullah
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et al.
Fuel,
Journal Year:
2025,
Volume and Issue:
386, P. 134261 - 134261
Published: Jan. 4, 2025
Language: Английский
Sustainable biodiesel synthesis using bamboo leaves ash doped with Anser cygnoides eggshell derived CaO (BLA@SiO2-CaO) green catalyst: Characterization and optimization study
Biomass and Bioenergy,
Journal Year:
2025,
Volume and Issue:
198, P. 107815 - 107815
Published: April 7, 2025
Language: Английский
Utilization of sustainable nanocatalysts for the conversion of vulnerable waste oil into biodiesel
Abbas Sabahi Namini,
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Sunghoon Jung,
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Nazmiye Gökçe Altınçekiç
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et al.
Journal of Molecular Structure,
Journal Year:
2025,
Volume and Issue:
1338, P. 142166 - 142166
Published: April 9, 2025
Language: Английский
Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis
Energies,
Journal Year:
2025,
Volume and Issue:
18(10), P. 2533 - 2533
Published: May 14, 2025
As
fossil
fuel
depletion
and
environmental
pollution
become
increasingly
severe,
biodiesel
has
emerged
as
a
promising
renewable
alternative
to
conventional
diesel
due
its
biodegradability,
low
sulfur
emissions,
high
combustion
efficiency.
This
paper
provides
comprehensive
review
of
the
evolution
feedstocks,
major
production
technologies,
key
factors
influencing
efficiency
quality.
It
traces
development
feedstocks
from
first-generation
edible
oils,
second-generation
non-edible
oils
waste
fats,
third-generation
microalgal
fourth-generation
biofuels
based
on
synthetic
biology,
with
comparative
analysis
their
respective
advantages
limitations.
Various
technologies
such
transesterification,
direct
esterification,
supercritical
alcohol
methods,
enzyme-catalyzed
transesterification
are
examined
in
terms
reaction
mechanisms,
process
conditions,
applicability.
The
effects
critical
parameters
including
alcohol-to-oil
molar
ratio,
time,
temperature
yield
quality
discussed
detail.
Particular
attention
is
given
role
catalysts,
both
homogeneous
heterogeneous
types,
enhancing
conversion
In
addition,
life
cycle
assessment
(LCA)
briefly
considered
evaluate
impact
sustainability
production.
serves
valuable
reference
for
improving
advancing
sustainable
feedstock
development,
promoting
commercial
application
biodiesel.
Language: Английский
Ultrasound-assisted biodiesel production using engineered Cycas circinalis seed shell-derived heterogeneous catalyst
G. S. Vanisree,
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K. Aparna
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Thermal Science and Engineering Progress,
Journal Year:
2025,
Volume and Issue:
59, P. 103335 - 103335
Published: Jan. 31, 2025
Language: Английский
Catalisadores heterogêneos: revisão das principais técnicas de síntese e aplicações de materiais ativos suportados
Ana Karoliny da Silva Feitosa,
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Herbert Fernandes Silva,
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Helder de Lucena Pereira
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et al.
Revista de Gestão e Secretariado (Management and Administrative Professional Review),
Journal Year:
2025,
Volume and Issue:
16(2), P. e4672 - e4672
Published: Feb. 20, 2025
Os
catalisadores
desempenham
um
papel
fundamental
na
aceleração
da
velocidade
de
uma
reação
química
sem
serem
consumidos
no
processo,
o
que
pode
aumentar
significativamente
a
rentabilidade
produção.
O
objetivo
deste
trabalho
foi
realizar
revisão
bibliográfica
abrangente,
com
intuito
apresentar
as
principais
técnicas
utilizadas
síntese
heterogêneos.
A
pesquisa
realizada
por
meio
levantamento
informações
em
base
consolidada
dados
científicos,
plataforma
ScienceDirect.
materiais
ativos
predominantemente
empregados
estudo
foram
óxido
cálcio
(CaO),
níquel
(NiO),
zinco
(ZnO),
potássio
(K₂O)
e
magnésio
(MgO).
Quanto
aos
suportes,
os
mais
utilizados
incluíram
carvão
ativado,
alumina,
zeólita,
biochar,
sílica,
nanotubos
carbono,
grafeno
algumas
peneiras
moleculares,
como
SBA-15.
Portanto,
métodos
impregnação,
especialmente
via
úmida,
são
amplamente
nas
pesquisas
analisadas,
destaque
para
processo
hidrotérmico
combinado
outras
técnicas.
Preparation of sulfonated lignin-based carbon aerogel catalyst for biodiesel production from waste vegetable oil
International Journal of Green Energy,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 18
Published: Nov. 17, 2024
Using
effective
green
heterogeneous
catalysts
to
produce
biodiesel
from
inexpensive
non-food
oils
is
vital
for
reducing
reliance
on
fossil
fuels,
meeting
increasing
global
energy
demands,
and
supporting
carbon
neutrality.
This
study
explores
the
use
of
a
sulfonated
lignin-based
aerogel
catalyst
production
waste
vegetable
oil
(WVO).
The
catalyst,
prepared
via
sol–gel
method
followed
by
carbonization
sulfonation
exhibited
specific
surface
area
78.16
m2/g
-SO₃H
group
density
2.81
±
0.14
mmol/g,
which
served
as
primary
active
sites.
Under
optimal
conditions;
10
wt%
loading,
45:1
methanol-to-WVO
molar
ratio,
65°C
reaction
temperature,
5-hr
time,
achieved
maximum
conversion
93.3%
yield
88.51%.
However,
decline
in
performance
was
observed
over
repeated
cycles,
with
dropping
51.68%
fourth
cycle,
attributed
leaching
groups
reduction
44.13
m2/g.
decrease
sulfonic
1.03
0.11
mmol
SO₃H
g−
1
indicated
loss
sites,
highlighting
need
improve
sites'
stability
catalyst's
structural
integrity.
produced
met
ASTM
D6751
EN
14,214
standards,
demonstrating
effectiveness
sustainable
production.
Language: Английский