K

Rotating-disc fermenters

Rotating-disc contactors have been used in effluent treatment (Chapter 11). They utilize a growing microbial film on slow rotating discs to oxidize the effluent. Anderson and Blain (1980) have used the same principle to construct small fermenters of up to 40-dm3 working volume. A range of filamentous fungi, including species of Aspergillus, Rhizopus, Mucor and Penicil-liurrt, could be grown on the polypropylene discs. It has been possible to obtain yields of 80 g dm-3 of citric acid from A. niger using this design of fermenter.

Liquid injector

Liquid ejector

Fig. 7.52. Gas entraƮner nozzles of deep-jet fermenters (Reuss, 1992).

Was this article helpful?

0 0
The Miracle Of Vinegar

The Miracle Of Vinegar

You may be forgiven for thinking that these passed down secrets had gone for good, washed away with time and the modern age, But they're not. You can now own three of the best traditional did you know style reports that were much loved by our parents and grandparents. And they were pretty smart too because not only will these reports save you time and money but they'll also help you eliminate some of the scourges of modern day living such as harmful chemical usage in the home.

Get My Free Ebook


Post a comment