Hydrogen and oxygen bubble attachment to a bitumen drop

Guoxing Gu, R. Sean Sanders, K. Nandakumar, Zhenghe Xu, Jacob H. Masliyah*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Air bubble - bitumen attachment is a critical step in the flotation of bitumen from mined oil sand. In this study, single bubble - bitumen drop attachment was observed directly using a novel experimental technique. Induction time is determined and used as an indication of bubble-bitumen attachment potency for both hydrogen and oxygen bubbles. The attachment tests were conducted in deaerated municipal water (City of Edmonton tap water) at temperatures ranging from 22-50°C. Induction times measured for hydrogen bubble attachment were shorter than those for oxygen bubbles. Coalescence tests were also conducted in the absence of bitumen, and showed that hydrogen bubbles coalesced more rapidly than oxygen bubbles in both deaerated municipal water and clear (solids-free) process water.

Original languageEnglish
Pages (from-to)846-849
Number of pages4
JournalCanadian Journal of Chemical Engineering
Volume82
Issue number4
DOIs
StatePublished - Aug 2004
Externally publishedYes

Keywords

  • Attachment
  • Bitumen flotation
  • Hydrogen bubble
  • Induction time
  • Oxygen bubble

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