Dilute acid pre-treatment of oilseed rape straw for bioethanol production

Mathew, Anil Kuruvilla; Chaney, Keith; Crook, Mitch and Humphries, Andrea Claire (2011). Dilute acid pre-treatment of oilseed rape straw for bioethanol production. Renewable Energy, 36(9) pp. 2424–2432.

DOI: https://doi.org/10.1016/j.renene.2011.01.030

Abstract

The objective of the research was to investigate the effect of biomass loading, acid concentration and pre-treatment time on the yield of sugars obtained after acid pre-treatment and enzymatic hydrolysis of oilseed rape (OSR) straw. The highest concentration of glucose (313.4 ± 7.53 mg g⁻¹ biomass) extracted after hydrolysis was achieved when OSR straw was pre-treated for 90 min; a glucan conversion efficiency of 81%. The highest concentration of sugars extracted immediately after pre-treatment was achieved with a pre-treatment time of 60 min. Pre-treatment energy efficiency in terms of total yield of sugars per MJ of energy consumed was higher when OSR straw was pre-treated for 60 min compared to 90 min even though the conversion of sugar extracted was lower at 60 min.

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