Paper Type |
Contributed Paper |
Title |
Bioethanol from Spent Mushroom Sawdust Waste by Perchloric Acid: Easy Sugars Separation and Hydrolysis Without Charring |
Author |
Teow Chong Teoh*[a], Ching Siew Soo [b], Thorsten Heidelberg [b] and Arifin Zainudin [b] |
Email |
ttchong@um.edu.my |
Abstract: Spent mushroom sawdust substrate (SMSS), a waste product from a local, Pleurotus spp mushroom-growing company, was appraised for its potential as a source for the production of ethanol. The successive growth of mushrooms weakens the ligno-cellulosic structure of the wood based substrate, thus making it more amenable to acid hydrolysis. Perchloric acid (70 %) was used to hydrolyze the cellulose into a glucose solution suitable for fermentation. This rather unusual catalyst bears the advantageous easy removal of neutralization products. The poor water soluble potassium perchlorate separates in crystalline form and enables the hydrolysis without external heating. A time course investigation indicated a hydrolysis treatment for 10 min at about 50°C as optimum conditions. Fermentation of the sugar solution with baker’s yeast, Saccharomyces cerevisiae, yielded up to 4 g ethanol/100g ligno-cellulose. This translates to 40 L of biofuel per ton of dried substrate. |
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Start & End Page |
513 - 523 |
Received Date |
2012-11-04 |
Revised Date |
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Accepted Date |
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Full Text |
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Keyword |
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Volume |
Vol.41 No.3 (JULY 2014) |
DOI |
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Citation |
Teoh T.C., Soo C.S., Heidelberg T. and Zainudin A., Bioethanol from Spent Mushroom Sawdust Waste by Perchloric Acid: Easy Sugars Separation and Hydrolysis Without Charring, Chiang Mai J. Sci., 2014; 41(3): 513-523. |
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