Journal
ENVIRONMENTAL CHEMISTRY LETTERS
Volume 20, Issue 1, Pages 335-378Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10311-021-01358-w
Keywords
Biodiesel; One-pot extraction-transesterification; Intensification techniques; Feedstocks; Catalysts
Funding
- University Sains Malaysia [PJKIMIA/8014100]
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Biodiesel is a sustainable alternative to petroleum diesel, but faces challenges in commercialization due to production costs and suitable industrial techniques. The one-pot extraction-transesterification method can potentially solve these issues by efficiently processing cheap, low-quality feedstocks with high conversion rates. Intensification techniques, such as microwave irradiation and ultrasonication, can further enhance the efficiency of biodiesel production.
Biodiesel is a sustainable alternative to petroleum diesel. The main bottlenecks in the commercialization of biodiesel are production costs and suitable industrial techniques to process feedstocks. This can be solved by one-pot extraction-transesterification of cheap, low-quality feedstocks. Here we review one-pot extraction-transesterification using agricultural seed crops, oleaginous microbial biomass and biological refuse, with focus on catalysis. Catalysts such as acetyl chloride, sodium hydroxide, sulphonated rice husk and calcium oxide have shown to be efficient with conversion in the range of 95-100%. We present intensification techniques such as microwave irradiation, ultrasonication, coupled microwave and ultrasound, thermally assisted and solvothermal processes.
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