Abstract
Ethanol production was carried out by growing yeast cells immobilized on porous cellulose carriers. The effects of the chemical modification of cellulose carriers on cell immobilization and ethanol production were examined with respect to ion-exchange capacity and chemical structure. The ion-exchange capacity of 0·1 meq/g-carriers had no effect on immobilization but affected ethanol production by repeated batch cultures using immobilized yeast cells. Diethylaminoethyl was a suitable function group for immobilization and ethanol production. Ethanol productivity of the 10th batch cycle with diethylaminoethyl cellulose carriers was 23% greater than that of the first batch cycle.
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