This paper presents the application to a real fermentation pilot plant of an original control technique called L/A control. Such a control takes into account implicitly the positivity of process variables and may be designed from classical linear methods. The underpinning idea is to release the posi
Evaluation of sensors for the control of a continuous ethanol fermentation
β Scribed by M. Polakovic; C. F. Mandenius
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 691 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1615-7605
No coin nor oath required. For personal study only.
β¦ Synopsis
A method is presented for the evaluation of sensors qm kg/m3 used in the control of continuous fermentations. Simulations of qs kg/m3 open-loop response to input disturbance provided a starting G kg/m3 point for the choice of sensor type. This was evaluated D 1/h quantitatively through a sensitivity ratio. It was shown that in D* 1/h the case of ethanol fermentation, there existed three regions where different sensors could be used for the process control Di l/h
π SIMILAR VOLUMES
By recycling the contents of a 14 L fermentor through a stripping column to continuously remove ethanol and reduce product inhibition, continuous complete conversion of nutrient feed containing 600 g/L glucose was achieved in a small pilot plant. Ethanol was recovered from the carbon dioxide strippi
An enzyme thermistor was used to monitor and control the sucrose concentration in a conversion of sucrose to ethanol with immobilized yeast. A continuous stirred tank reactor containing calcium alginate to entrap Saccharomyces cerevisiae was used. The enzyme thermistor was continuously measuring the
In a low dilution rate study an unexpected pa-related inhibition of yeast fermentation was found. A higher volumetric rate of ethanol production occurred at lower pH values (2.8 to 3.2), suggesting a low optimum PH.