Ethanol Production from Rubber Sawdust Waste by Thermotolerant Scheffersomyces shehatae TTC79
Abstract
Lignocellulosic materials are the most abundant, cheap and renewable feedstocks for ethanol production. In this study, rubber sawdust, a lignocellulosic waste of furniture manufacturers was investigated as a source of fermentable sugars for ethanol production. Enzyme hydrolysis of alkaline pretreated sawdust showed high sugar content and low amount of toxic compounds compared with the acid pretreated sawdust.
Simultaneous saccharification and fermentation (SSF) studies were carried out to produce ethanol from alkaline pretreated sawdust waste using thermotolerant yeast, Scheffersomyces shehatae TTC79. The maximum ethanol concentration, ethanol yield, productivity and theoretical yield were 2.14 g/l, 0.33 g/g, 0.18 g/l/h and 65.13%, respectively.
Keywords : ethanol, rubber sawdust, thermotolerant yeast,
simultaneous saccharification and fermentation
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