Related Experiment Video
Updated: Jun 24, 2026

Ultrasonic-Assisted Preparation of Biodiesel Products from Vegetable Oils
Published on: April 19, 2024
Ultrasound-assisted oxidative process for sulfur removal from petroleum product feedstock
Paola de A Mello1, Fábio A Duarte, Matheus A G Nunes
1Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
Abstract:
A procedure using ultrasonic irradiation is proposed for sulfur removal of a petroleum product feedstock. The procedure involves the combination of a peroxyacid and ultrasound-assisted treatment in order to comply with the required sulfur content recommended by the current regulations for fuels. The ultrasound-assisted oxidative desulfurization (UAOD) process was applied to a petroleum product feedstock using dibenzothiophene as a model sulfur compound. The influence of ultrasonic irradiation time, oxidizing reagents amount, kind of solvent for the extraction step and kind of organic acid were investigated. The use of ultrasonic irradiation allowed higher efficiency for sulfur removal in comparison to experiments performed without its application, under the same reactional conditions. Using the optimized conditions for UAOD, the sulfur removal was about 95% after 9min of ultrasonic irradiation (20kHz, 750W, run at 40%), using hydrogen peroxide and acetic acid, followed by extraction with methanol.
More Related Videos
Related Concept Videos
Electrophilic Aromatic Substitution: Sulfonation of Benzene
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Bioremediation
Preparation and Reactions of Thiols
Microbial Bioremediation of Hydrocarbons
Anoxygenic Photosynthesis

