Ultrasound-Assisted Oxidative Desulfurization of Diesel
Journal of Engineering
View Archive Info| Field | Value | |
| Title |
Ultrasound-Assisted Oxidative Desulfurization of Diesel
|
|
| Creator |
Ibrahim, Niran K.
Noori, Walla A. Khasbag, Jaffar M. |
|
| Description |
Due to the dramatic environmental impact of sulfur emissions associated with the exhaust of diesel engines, last environmental regulations for ultra-low-sulfur diesel require a very deep desulfurization (up to 15 ppm), which cannot be met by the conventional hydrodesulfurization units alone. The proposed method involves a batch ultrasound-assisted oxidative desulfurization (UAODS) of a previously hydrotreated diesel (containing 480 ppm sulfur) so as to convert the residual sulfur-bearing compounds into their corresponding highly polar oxides, which can be eliminated easily by extraction with a certain highly polar solvent. The oxidizing system utilized was H2O2 as an oxidant, CH3COOH as a promoter, with FeSO4 as a catalyst; whereas acetonitrile was used as extractant. The major influential parameters related to UAODS process have been investigated, namely: ratio of oxidant/fuel, ratio of the promoter/oxidant, dose of catalyst, reaction temperature, and intensity of ultrasonic waves. Kinetics of the reaction has been also studied; it was observed that the UAODS of diesel fuels fitted pseudo-first-order kinetics under the best experimental conditions, whereas values of the apparent rate constant and activation energy were 0.373 min-1 and 24 KJ/mol, respectively. The oxidation treatment, in combination with ultrasonic irradiation, revealed a synergistic effect for diesel desulfurization. The experimental results showed that sulfur removal efficiency could amount to 98% at mild operating conditions (70 ○C and 1 bar). This indicates that the process is efficient and promising for the production of ultra-low-sulfur diesel fuels. |
|
| Publisher |
College of Engineering | University of Baghdad
|
|
| Date |
2016-11-01
|
|
| Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
|
| Format |
application/pdf
|
|
| Identifier |
http://joe.uobaghdad.edu.iq/index.php/main/article/view/121
|
|
| Source |
مجلة الهندسة; مجلد 22 عدد 11 (2016): Journal of Engineering (Eng. J.); 55-67
Journal of Engineering; Vol 22 No 11 (2016): Journal of Engineering (Eng. J.); 55-67 2520-3339 1726-4073 |
|
| Language |
eng
|
|
| Relation |
http://joe.uobaghdad.edu.iq/index.php/main/article/view/121/107
|
|
| Rights |
Copyright (c) 2016 Eng. J.
|
|