The Effect of Variable Parameters on Carbon Residue of Iraqi Vacuum Gas Oil using Ultrasound Techniques


  • Fatima H. Abbas Chemical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
  • Tariq M. Naife Chemical Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
  • Hind Barghash German University of Technology, Sultanate of Oman



vacuum gas oil processing, ultrasonic cavitation, heavy oil, oil upgrading, petroleum, power amplitude


An ultrasonic treatment was applied to the vacuum gas oil at intervals of 5 to 30 minutes, at 70°C.  In this work, the improvement of the important properties of Iraqi vacuum gas oil, such as carbon residue, was studied with several parameter conditions that affect vacuum efficiency, such as sonication time (5, 10, 15, 20, 25, and 30) min, power amplitude (10–50%). After ultrasonic treatment, the carbon residue of vacuum gas oil was evaluated using a Conradson carbon residue meter (ASTM D189). The experiment revealed that the oil's carbon residue had decreased by 16%. As a consequence of the experiment It was discovered that ultrasonic treatment might reduce the carbon residual and density of oil samples being studied. It also noticed that the carbon residue reduced with increased ultrasonic treatment duration and power. The mechanical mixing and cavitation brought about by ultrasonic processing led to a number of modifications in the gas oil molecules. The properties of a typical molecular structure were altered on a microscale.


S. Bezergianni, A. Dimitriadis, O. Kikhtyanin, and D. Kubička, “Refinery co-processing of renewable feeds,” Prog. Energy Combust. Sci., vol. 68, pp. 29–64, 2018.

Á. Ibarra, E. Rodríguez, U. Sedran, J. M. Arandes, and J. Bilbao, “Synergy in the cracking of a blend of bio-oil and vacuum gasoil under fluid catalytic cracking conditions,” Ind. Eng. Chem. Res., vol. 55, no. 7, pp. 1872–1880, 2016.

B. Avvaru, N. Venkateswaran, P. Uppara, S. B. Iyengar, and S. S. Katti, “Current knowledge and potential applications of cavitation technologies for the petroleum industry,” Ultrason. Sonochem., vol. 42, pp. 493–507, 2018.

E. Struhs et al., “Ultrasonic-assisted catalytic transfer hydrogenation for upgrading pyrolysis-oil,” Ultrason. Sonochem., vol. 73, p. 105502, 2021.

A. K. Coker, Petroleum Refining Design and Applications Handbook, Volume 1. John Wiley & Sons, 2018.

A. N. Sawarkar, A. B. Pandit, S. D. Samant, and J. B. Joshi, “Use of ultrasound in petroleum residue upgradation,” Can. J. Chem. Eng., vol. 87, no. 3, pp. 329–342, 2009.

M. R. Yakubov, G. R. Abilova, S. G. Yakubova, and N. A. Mironov, “Composition and properties of heavy oil resins,” Pet. Chem., vol. 60, no. 6, pp. 637–647, 2020.

Mohammed, A.-H. A.-K., & Hussain, H. K. (2001). Deasphaltening and Hydrodesulfurization of Basrah Vacuum Residue. Iraqi Journal of Chemical and Petroleum Engineering, 2(4), 12–18.

D.-R. Olaya-Escobar, L.-A. Quintana-Jiménez, E.-E. González-Jiménez; Erika-Sofia Olaya-Escobar, “Ultrasound Applied in the Reduction of Viscosity of Heavy Crude Oil,” Revista Facultad de Ingeniería, vol. 29 (54), e11528, 2020.

A. R. Artino Jr, J. S. La Rochelle, K. J. Dezee, and H. Gehlbach, “Developing questionnaires for educational research: AMEE Guide No. 87,” Med. Teach., vol. 36, no. 6, pp. 463–474, 2014.

B. Savun-Hekimoğlu, “A review on sonochemistry and its environmental applications,” in Acoustics, 2020, vol. 2, no. 4, pp. 766–775.

X. Luo, H. Gong, Z. He, P. Zhang, and L. He, “Recent advances in applications of power ultrasound for petroleum industry,” Ultrason. Sonochem., vol. 70, p. 105337, 2021.

S. S. Rashwan, I. Dincer, and A. Mohany, “A review on the importance of operating conditions and process parameters in sonic hydrogen production,” Int. J. Hydrogen Energy, vol. 46, no. 56, pp. 28418–28434, 2021.

S. Hong and G. Son, “Numerical modelling of acoustic cavitation threshold in water with non-condensable bubble nuclei,” Ultrason. Sonochem., vol. 83, p. 105932, 2022.

L. A. Yusuf, “Optimising acoustic cavitation for industrial application.” University of Glasgow, 2022.

C. Yang et al., “Characterization of naphthenic acids in crude oils and refined petroleum products,” Fuel, vol. 255, p. 115849, 2019.




How to Cite

Abbas, F. H., Naife, T. M., & Barghash, H. (2023). The Effect of Variable Parameters on Carbon Residue of Iraqi Vacuum Gas Oil using Ultrasound Techniques. Iraqi Journal of Chemical and Petroleum Engineering, 24(2), 107–112.