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Flow characteristics of microbubble suspensions in porous media as an oxygen carrier

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dc.contributor.authorChoi, Yong Ju-
dc.contributor.authorPark, Joo Young-
dc.contributor.authorKim, Young Jin-
dc.contributor.authorNam, Kyoungphile-
dc.date.accessioned2009-09-06T23:45:29Z-
dc.date.available2009-09-06T23:45:29Z-
dc.date.issued2008-01-25-
dc.identifier.citationClean 2008, 36, 59en
dc.identifier.issn1863-0650 (print)-
dc.identifier.issn1863-0669 (online)-
dc.identifier.urihttps://hdl.handle.net/10371/8737-
dc.description.abstractMicrobubble suspensions were generated as an oxygen carrier for aerobic biodegradation, and their flow characteristics in porous media were investigated. Commercial surfactants including sodium dodecyl sulfate (SDS), and dodecylethyldimethylammonium bromide (DEDAB), saponin (a natural surfactant), and collagen (a protein hydrolysate) were examined as base materials for generating microbubble suspensions. Among them, 2 x CMC (critical micellar concentration) of SDS, DEDAB, and saponin developed microbubble suspensions with the highest gas hold-up and half-drainage time. Visualization of the flow patterns in sand showed that the microbubble suspensions were separated into a liquid and gas phase directly after injection, showing much faster movement of liquid phase flow. The gas front of the microbubble suspensions flowed in a plug-flow manner, particularly in cases of SDS and DEDAB. The experimental results from both homogeneous and heterogeneous cells confirmed that the microbubble flow could overcome the heterogeneity in porous media. However, the plug-flow characteristics and flow propagation of the microbubble suspensions to the low-permeability zone was accompanied by a large pressure drop, which needs to be considered for future field application.en
dc.description.sponsorshipThis research was sponsored mainly by the Basic Research Program
of the Korea Science & Engineering Foundation (Grant No. R01-
2006-000-10136-0). Additional support was provided by KOSEF
through AEBRC at POSTECH (grant No. R11-2003-006-03001-0). The
authors would like to thank the Research Institute of Engineering
Science at Seoul National University for their technical assistance.
en
dc.language.isoen-
dc.publisherWiley-Blackwellen
dc.subjectFlow Characteristicsen
dc.subjectMicrobubble Suspensionen
dc.subjectOxygen Supplyen
dc.subjectPlug-Flowen
dc.subjectSoil Contamination;en
dc.titleFlow characteristics of microbubble suspensions in porous media as an oxygen carrieren
dc.typeArticleen
dc.contributor.AlternativeAuthor최용주-
dc.contributor.AlternativeAuthor박주영-
dc.contributor.AlternativeAuthor김영진-
dc.contributor.AlternativeAuthor남경필-
dc.identifier.doi10.1002/clen.200700146-
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