Recovery of Bitumen from Oil Sand by Sonication in Aqueous Hydrogen Peroxide

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概要

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• The surface of bitumen is hydrophobic; therefore, floatation separation using gas flow into the solution was considered an effective recovery mechanism of bitumen from oil sand. Low (28 kHz) and high (200 kHz) frequency sonication combined with floatation separation at 85 °C were investigated to assess the effects of different ultrasound frequencies on the recovery rate and purity of bitumen from oil sand. Hydrogen peroxide was also used as a frothing agent. The role of highly concentrated H₂O₂ (${>}100$ ppm) to recover bitumen during sonication was investigated. Hydrogen peroxide formed a bubble around the bitumen, which made it rise more easily to the solution surface during sonication. The result showed a good recovery rate of bitumen. 28 kHz sonication combined with H₂O₂ was a more appropriate method than that of 200 kHz to recover bitumen in a short time because of its strong stripping action caused by a strong jet flow.

• 2011-07-25

著者

• Nakamura Takashi

  Graduate School Of Engineering Osaka University

• Hosokawa Ryota

  Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, Japan

• Okawa Hirokazu

  Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, Japan

• Saito Tomonao

  Graduate School of Engineering and Resource Science, Akita University, Akita 010-8502, Japan

• Kawamura Youhei

  Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

• Koda Shinobu

  Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan

• Kawamura Youhei

  Graduate School of System and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

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