A strategy to scale up nitrification processes with immobilized cells of nitrosomonas europaea and nitrobacter agilis
✍ Scribed by J. H. Hunik; J. Tramper; R. H. Wijffels
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 921 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1615-7605
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✦ Synopsis
A scale-up strategy for a nitrification process with R immobilized cells is presented. The complete description of such S a process for a wide range of conditions is time consuming or Ssur even impossible. For a successful scale up of the process knowledge of the rate-limiting step is essential. To estimate the Sbutk rate-limiting step a regime analysis was used. A new element in this regime analysis is a solid third phase in which cells grow y non-homogeneously. Three different conditions of the nitrification process were considered: low temperature (7~ with a low ammonia concentration (2 mM), and optimal X temperature (3o~ with an ammonia concentration of z and Z 250 mM. The regime analysis proved to be a helpful tool for the understanding of the process and for establishing the z ~ rate-limiting step. A set of design rules for the different nitrification conditions was obtained from the results of this regime analysis.
Hst of symbols
ag m 2 m -3 gas phase aig