P1.17 - Separation of crude oil from wastewater using high-frequency ultrasound
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Posters
- Chapter
- Posters
- Author(s)
- C. M. G. Atehortua, A. M. Silva Jr, F. Buiochi, M. S. G. Tsuzuki - Universidade de São Paulo, São Paulo (Brazil), L. O. V. Pereira - Petrobras, Rio de Janeiro (Brazil), J. H. Lopes - Universidade Federal de Alagoas, Maceió (Brazil)
- Pages
- 340 - 343
- DOI
- 10.5162/Ultrasonic2025/P1.17
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
Crude-oil and gas production always generates a large amount of stable oily wastewater. An alternative treatment involves the use of high-frequency ultrasound to induce oil separation. A controlled 1 MHz ultrasonic chamber was used to separate a 2500 ppm (g oil / g water) synthetic Brazilian crude-oil-in-water emulsions without the use of chemical additives. An oil separation efficiency of about 70% was achieved with a power input of around 40 W applied for 2 minutes. In contrast, the non-acoustic reference resulted in an oil separation of only around 3.6%.