Preparation of sulfonated lignin-based carbon aerogel catalyst for biodiesel production from waste vegetable oil DOI
Zayed Al-Hamamre, Ibrahem Altarawneh, Mohammad Alnaief

et al.

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

A novel mesoporous catalyst from Ulva lactuca for biodiesel production from waste cooking oil using a microwave-assisted technique DOI
Obie Farobie,

Risalania Aslamah,

Apip Amrullah

et al.

Fuel, Journal Year: 2025, Volume and Issue: 386, P. 134261 - 134261

Published: Jan. 4, 2025

Language: Английский

Citations

0
Sustainable biodiesel synthesis using bamboo leaves ash doped with Anser cygnoides eggshell derived CaO (BLA@SiO2-CaO) green catalyst: Characterization and optimization study DOI

Mohd Rakimuddin Khan,

Huirem Neeranjan Singh, Wangkhem Robinson Singh

et al.

Biomass and Bioenergy, Journal Year: 2025, Volume and Issue: 198, P. 107815 - 107815

Published: April 7, 2025

Language: Английский

Citations

0
Utilization of sustainable nanocatalysts for the conversion of vulnerable waste oil into biodiesel DOI
Abbas Sabahi Namini,

Sunghoon Jung,

Nazmiye Gökçe Altınçekiç

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: 1338, P. 142166 - 142166

Published: April 9, 2025

Language: Английский

Citations

0
Study on Biodiesel Production: Feedstock Evolution, Catalyst Selection, and Influencing Factors Analysis DOI Creative Commons
Fangyuan Zheng, Haeng Muk Cho

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

Citations

0
Ultrasound-assisted biodiesel production using engineered Cycas circinalis seed shell-derived heterogeneous catalyst DOI

G. S. Vanisree,

K. Aparna

Thermal Science and Engineering Progress, Journal Year: 2025, Volume and Issue: 59, P. 103335 - 103335

Published: Jan. 31, 2025

Language: Английский

Citations

0
Catalisadores heterogêneos: revisão das principais técnicas de síntese e aplicações de materiais ativos suportados DOI Creative Commons

Ana Karoliny da Silva Feitosa,

Herbert Fernandes Silva,

Helder de Lucena Pereira

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.

Citations

0
Preparation of sulfonated lignin-based carbon aerogel catalyst for biodiesel production from waste vegetable oil DOI
Zayed Al-Hamamre, Ibrahem Altarawneh, Mohammad Alnaief

et al.

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

Citations

0