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Potential of TemuloseTM for Ethanol Production (Part 2)

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2007 ASAE Annual Meeting  076041.(doi:10.13031/2013.23305)
Authors:   Froilan L Aquino, Joan R Hernandez, Sergio C Capareda, ,
Keywords:   TemuloseTM, hemicellulose extract, wood sugar, delignification, fermentation, ethanol

TemuloseTM, a hemicellulose extract from wood has a large potential for ethanol production due to its high available sugar content. We have investigated the effect of delignification on the substrate by using various amounts of CaCO3 and NaOH treatment. The presence of high amounts of inhibitory compounds in the substrate (i.e. phenolic compounds and furfurals) could limit ethanol production from yeast fermentation. The different CaCO3 and NaOH treatments resulted to various pH and Brix levels for the substrate. It is expected that the pretreatment process will effectively remove much of the lignin inhibitors. After four consecutive days of fermentation, it is projected that ethanol will be produced and the highest ethanol yield will be observed from the sample with the highest pH level (5 % CaCO3 and 1 % NaOH). The production of ethanol is also expected to decelerate and eventually level off after the fourth day of fermentation.

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