Continuous bioethanol production from oilseed rape straw hydrosylate using immobilised Saccharomyces cerevisiae cells

Mathew, Anil Kuruvilla; Crook, Mitch; Chaney, Keith and Humphries, Andrea (2014). Continuous bioethanol production from oilseed rape straw hydrosylate using immobilised Saccharomyces cerevisiae cells. Bioresource Technology, 154 pp. 248–253.

DOI: https://doi.org/10.1016/j.biortech.2013.12.044

Abstract

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 1.00 h(^-1)), substrate concentration (15, 22, 40 and 60 g L(^-1)) and cell loading (0.03, 0.16 and 0.24 g d.c.w.mL(^-1) Lentikat®) on bioethanol production. Volumetric productivity was found to increase with increasing substrate concentration from 15 g L(^-1) to 60 g L(^-1). A maximum volumetric productivity of 12.88 g L(^-1)h(^-1) was achieved at a substrate concentration of 60 g L(^-1) and at a dilution rate of 0.5h(^-1). 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.

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