New technology for ethanol production
Résumé
A new technology for ethanol production is proposed. For this purpose immobilized yeast cells of strainsSaccharomyces cerevisiae 46 EVD or Saccharomyces cerevisiae BO 213 were used. Double coated Caalginatecapsules realized with a new method for immobilization was applied. In this way, a maximalmechanical stability of immobilized cells was achieved. For control algorithm design, a software sensor ofethanol production rate based on on-line or laboratory measurements of ethanol concentration was derived.The software sensor information is used to switch automatically mode of cultivation from batch to continuousone. Applying direct digital control by LABVIEW system, ethanol concentration is stabilized at a constantvalue that guarantees maximum productivity.