Multiphase Bioreactor Design

The space co-ordinate in the gel bead mass balance is discretized, making the partial differential equation a set of ordinary di ...

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CHAPTER THIRTEEN FLOCCULATION BIOREACTORS ANTÓNIO A.VICENTE, MANUEL MOTA AND JOSÉ A.TEIXEIRA Department of Biological Engineerin ...

are a very interesting technique due to their low operational costs (Sousa et al., 1994a) and simplicity—no complex mechanical d ...

flocculation. In turn, the flocs will cause a change in both the individual cell metabolism and the environmental conditions. Th ...

van Hamersveld et al., 1997) and the hydrodynamic conditions must be favourable, i.e. high enough collision rate and not too lar ...

The evaluation of the performance of flocculating cultures in airlift reactors depends on understanding of the following paramet ...

circulating as well as to optimise the hydrodynamic conditions inside the reactor. All the above-mentioned parameters are, in tu ...

These characteristics are especially useful in continuous three-phase reactors, where solids retention is a very important issue ...

bottom clearances (i.e. the distance between the top of the draught tube, and the liquid surface and between the bottom of the r ...

As stated before, biomass retention in flocculation bioreactors is strongly improved when an enlarged top section is used as it ...

Figure 13.2 Schematic diagram of the 60 L concentric tube airlift reactor. The reactor is divided in eight sections for sampling ...

In aerated fermentative process with flocculent cells, solute molecules must overcome several mass transfer resistances before t ...

Several of the design parameters discussed in the previous sections as well as the presence of solids may affect gas-liquid oxyg ...

and three times (Karamanev et al., 1992). The effect of the Ad/Ar ratio was also studied and a maximum kLa was obtained for a ra ...

2 mm and 3 mm. Their geometry is seldom a perfectly defined sphere, contrary to the usual assumption; instead, flat cylinders an ...

Teixeira and Mota (1990) proposed a membrane bioreactor for the assessment of internal diffusion limitations in yeast flocs (Fig ...

Figure 13.4 Exploded view of the membrane microreactor: A—feed inlet; B—outlet; C—O—ring; D— sealing holes (internal diameter 5 ...

Magna Floc LT25. Floc porosity was measured and found to range from 55.7% (without additive) to 60.5%–63.0% (with additive). The ...

Figure 13.5 Comparison of the concentration profiles for flocs grown with (dot-dashed lines) and without (solid lines) a floccul ...