Biochemical engineering oxygen transfer

Mehrnia, M. R. Towfighi, J. Bonakdarpour, B., and Akbarnejad, M. M., Gas hold-up and oxygen transfer in a draft-tube airlift bioreactor with petroleum-based liquids. Biochemical Engineering Journal, 2005. 22(2) pp. 105-110. 

The second type of oxygen transfer reaction is the epoxidation of olefins. This type of reaction is also rare in the plant cell biochemical factory, peroxidases of class III being inefficient catalysts. However, molecular engineered horseradish peroxidase is able to catalyze the... 

Schugerl K (1981) Oxygen transfer into highly viscous media. Advances in Biochemical Engineering 19 71-174. 

Chisti, Y, and Jauregui-Haza, U.J. (2002), Oxygen transfer and mixing in mechanically agitated airlift bioreactors, Biochemical Engineering Journal, 10(2) 143-153. 

Enhancement of the type as discussed here is also possible with small droplets instead of particles. Recently, such effects indeed have been observed (Fig. 19) and explained by a model [l46]. The effect is of interest in biochemical reaction engineering where the low solubility of oxygen in the aqueous solutions often is the rate limiting step. Addition of small droplets of e.g. fluoro hydrocarbons, in which oxygen is much more soluble than in water, may increase the rate of oxygen transfer substantially. 

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