Oxygen mass transfer to flowing ground water using oxygen microbubbles

Donald L. Michelsen, Mehran Lotfi, William H. Velander, James W. Mann, Peyman Khalichi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Mass balance and transfer of oxygen has been studied from oxygen microbubbles to low dissolved oxygen ground water passing through variously configured pilot scale vertical slice test cell (VSTC) under aseptic conditions (sodium azide treated). With O2 micorbubble injection at time 'O' under static conditions, initial retentions could be determined. Subsequently, with ground water flow initiated, dissolved oxygen measurements were made by drawing samples from the back face of the cell as well as input and outflow groundwater. From 5.4 to 59% of the oxygen microbubbles injected was transferred to the groundwater. With approximately 12% committed to biodegrade the surfactant used for oxygen microbubble formation, the difference would be available for in-situ biodegradation. The overall Kla's ranged from 0.01 to .09 hr-1 but intermittent O2 microbubble injection should keep the Kla's high. Maximum ΔD.O. ranged from 3.3 to 8.8. The role of oxygen microbubbles for in-situ aerobic biodegradation looks encouraging, and retention and performance during prolonged testing have been markedly improved.

Original languageEnglish (US)
Title of host publicationAir-Water Mass Transfer
PublisherPubl by ASCE
Number of pages13
ISBN (Print)0872628469
StatePublished - 1991
Event2nd International Symposium on Gas Transfer at Water Surfaces - Minneapolis, MN, USA
Duration: Sep 11 1990Sep 14 1990

Publication series

NameAir-Water Mass Transfer


Other2nd International Symposium on Gas Transfer at Water Surfaces
CityMinneapolis, MN, USA

ASJC Scopus subject areas

  • General Engineering


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