Simultaneous Saccharification and Fermentation of Diluted-Acid Pretreated Olive-Pruning Debris for Ethanol Production

M. Cuevas, S. Sánchez, V. Bravo, J.F. García, J. Baeza, C. Parra & J. Freer
This study investigates the effect of pre­treatment conditions: maximum temperature (range 423.15 K­ 483.15 K) and sulphuric­acid concentration (interval 0.002­0.059 kmol/m3) on fuel­ethanol production from simultaneous saccharification and fermentation (SSF) of olive­pruning debris by Saccharomyces cerevisiae IR2­9a. The influence of these two variables was determined by using a response­surface methodology. Cellulose percentage in pre­treated solids reached a maximum of 71.6% of the content in raw material at 483.15 K and 0.010 kmol/m3 of acid concentration....