Title of article
Ultrasound-assisted oxidative process for sulfur removal from petroleum product feedstock
Author/Authors
Mello، نويسنده , , Paola de A. and Duarte، نويسنده , , Fلbio A. and Nunes، نويسنده , , Matheus A.G. and Alencar، نويسنده , , Mauricio S. and Moreira، نويسنده , , Elizabeth M. and Korn، نويسنده , , Mauro and Dressler، نويسنده , , Valderi L. and Flores، نويسنده , , ةrico M.M.، نويسنده ,
Pages
5
From page
732
To page
736
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 9 min of ultrasonic irradiation (20 kHz, 750 W, run at 40%), using hydrogen peroxide and acetic acid, followed by extraction with methanol.
Keywords
Acetic acid , Ultrasound-assisted oxidative desulfurization , Petroleum product feedstock , Hydrogen peroxide
Journal title
Astroparticle Physics
Record number
2006618
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