Reactor equipment performance bubble columns

Systematic investigations of microbial cell recovery by foam flotation were performed by Hansenula polymorpha [113-117] and Saccharomyces cerevisiae [ 118 -123] in continuous operation. The equipment used for flotation was often identical to that used for protein flotation. The microorganisms were cultivated in laboratory reactors on synthetic media in the absence of antifoam agents in continuous operation and the cell-containing cultivation medium was collected in a buffer storage and was fed into the middle of the colunm, at the top of the interface between the bubble and the foam layers. The height of the interface was controlled by an overflow. The foam left the colunm at the top. The cells were recovered from the foam liquid by a mechanical foam destroyer. The liquid residue left the column through an overflow [113] (Fig. 6). 

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