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- Title
Dilute Acid Pretreatment of Corncob for Efficient Sugar Production.
- Authors
Wang, G. S.; Jae-Won Lee; Zhu, J. Y.; Jeffries, Thomas W.
- Abstract
queous dilute acid pretreatments of corncob were conducted using cylindrical pressure vessels in an oil bath. Pretreatments were conducted in a temperature range of 160-190 °C with acid-solution-to-solid-corncob ratio of 2. The acid concentration (v/v) in the pretreatment solution was varied from 0% to 0.7%, depending on temperature. This gives acid charge on ovendry-weight corncob of 0-2.58%. It was found that optimal pretreatment temperature is between 160 and 170 °C based on total xylose and glucose yields and thermal energy consumption in pretreatment. At 170 °C and acid charge of 2.2% on cob, total glucose yield and xylose recovery were 97% and 75%, respectively, which resulted in an overall monomeric sugar recovery of about 88%. Xylose concentration in the hydrolysate was about 12%, with xylose-to-acetic-acid ratio of 8 and to furan (furfural and hydroxymethylfurfural) of about 15.
- Subjects
SUGAR; CORNCOBS; ACETIC acid; FURANS; ACIDS
- Publication
Applied Biochemistry & Biotechnology, 2011, Vol 163, Issue 5, p658
- ISSN
0273-2289
- Publication type
Article
- DOI
10.1007/s12010-010-9071-4