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Showing 1 to 7 of 7 for “"microbubble dispersion"”.
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A Study of Rhamnolipid Microbubble Dispersion for Bioremediation Applications
This thesis presents a study on the production of microbubble dispersions from rhamnolipid biosurfactant and the mechanism and factors that impact upon the effectiveness of the dispersion for improving bioremediation efficiency, with a specific focus on the use of microbubble dispersion as a …
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Increased oxygen transfer in a yeast fermentation using a microbubble dispersion
The use of a microbubble dispersion (MBD) for oxygen transport in a yeast fermentation was studied. No surfactants were added to the fermentations; the microbubbles were formed using only the surfactants naturally produced by the yeast. The growth rate of a Saccharomyces cerevisiae culture was …
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Utilization of a Microbubble Dispersion to Increase Oxygen Transfer in Pilot-Scale Baker's Yeast Fermentation Unit
… stress and caused high power consumption. A microbubble dispersion (MBD) method was investigated to improve oxygen transfer at low agitation rates and thus reduce power consumption and shear stress on the microorganisms. The experiments were conducted at the 1-liter level and subsequently …
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Scale-Up the Use of a Microbubble Dispersion to Increase Oxygen Transfer in Aerobic Fermentation of Baker's Yeast
A microbubble dispersion (MBD) was used to supply oxygen for an aerobic fermentation of Baker's yeast. The 1-liter microbubble dispersion generator supplied bubbles for 20-liter and 50-liter working volume fermentations in a 72-liter pilot scale fermenter. The microbubbles were stabilized by the …
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The use of a microbubble dispersion to enhance a dissolved air flotation system in a wastewater treatment sludge media
… gas aphrons (CGAs) are typically a 55 to 70% dispersion of 50 +/- 40 micron-sized air bubbles in water. Generation of CGAs has proceeded to allow continuous production of up to 80 liters per minute. Previous laboratory testing has demonstrated the effectiveness of CGA flotation for removing …
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The Microbubble Assisted Bioremediation of Chlorinated Ethenes
This work focused on using a microbubble dispersion to deliver hydrogen and carbon dioxide to anaerobic consortia to stimulate their ability to reductively dehalogenate tetrachloroethylene all the way to ethene and ethane. A continuous flow system, consisting of six anaerobic soil column …
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Microbubble fermentation of recombinant Pichia pastoris for human serum albumin production
… agitation rate and use of oxygen-enriched air. Microbubble fermentation however can supply adequate oxygen to the microorganisms at relatively low agitation rates because of improved mass transfer of the microbubbles used for the sparging. Conventionally sparged fermentations were conducted for …