초록
The aim of the study was to evaluate continuous bioethanol production from oilseed rape (OSR) straw hydrolysate using Saccharomyces cerevisiae cells immobilised in Lentikat® discs. The study evaluated the effect of dilution rate (0.25, 0.50, 0.75 and 1.00h<SUP>-1</SUP>), substrate concentration (15, 22, 40 and 60gL<SUP>-1</SUP>) and cell loading (0.03, 0.16 and 0.24gd.c.w.mL<SUP>-1</SUP> Lentikat®) on bioethanol production. Volumetric productivity was found to increase with increasing substrate concentration from 15gL<SUP>-1</SUP> to 60gL<SUP>-1</SUP>. A maximum volumetric productivity of 12.88gL<SUP>-1</SUP>h<SUP>-1</SUP> was achieved at a substrate concentration of 60gL<SUP>-1</SUP> and at a dilution rate of 0.5h<SUP>-1</SUP>. An overall mass balance for bioethanol production was created to determine the energy recovery from bioethanol and concluded that a biorefinery approach might be the most appropriate option for maximising the energy recovery from OSR straw.