The influence of agitation on oil substrate dispersion and oxygen transfer in Pseudomonas aeruginosa USM-AR2 fermentation producing rhamnolipid in a stirred tank bioreactor
Abstract:Water-immiscible substrate, diesel, was supplied as the main substrate in the fermentation of Pseudomonas aeruginosa USM-AR2 producing rhamnolipid biosurfactant, in a stirred tank bioreactor. In addition to the typical gas-aqueous system, this system includes gas-hydrocarbon-aqueous phases and the presence of surfactant (rhamnolipid) in the fermentation broth. The effect of diesel dispersion on volumetric oxygen transfer coefficient, k a, and thus oxygen transfer, was evaluated at different agitations of 400, … Show more
“…beginning of the bioprocess can be interpreted as an intense respiratory activity of microorganisms. The highest oxygen demand occurs at the beginning of the exponential phase, although the cell concentration is higher afterward [31].…”
“…beginning of the bioprocess can be interpreted as an intense respiratory activity of microorganisms. The highest oxygen demand occurs at the beginning of the exponential phase, although the cell concentration is higher afterward [31].…”
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