Lime pretreatment and enzymatic hydrolysis of corn stover. Academic Article

abstract

• Corn stover was pretreated with an excess of calcium hydroxide (0.5 g Ca(OH)2/g raw biomass) in non-oxidative and oxidative conditions at 25, 35, 45, and 55 degrees C. The optimal condition is 55 degrees C for 4 weeks with aeration. Glucan (91.3%) and xylan (51.8%) were converted to glucose and xylose respectively, when the treated corn stover was enzymatically hydrolyzed with 15 FPU/g cellulose. Only 0.073 g Ca(OH)2 was consumed per g of raw corn stover. Of the initial lignin, 87.5% was maximally removed. Almost all acetyl groups were removed. After 4 weeks at 55 degrees C with aeration, some cellulose and hemicellulose were solubilized as monomers and oligomers in the pretreatment liquor. When considering the dissolved fragments of glucan and xylan in the pretreatment liquor, the overall yields of glucose and xylose were 93.2% and 79.5% at 15 FPU/g cellulose. The pretreatment liquor has no inhibitory effect on ethanol fermentation.

authors

• Holtzapple, Mark

published proceedings

• Bioresour Technol

altmetric score

• 3

author list (cited authors)

• Kim, S., & Holtzapple, M. T.

citation count

• 340

complete list of authors

• Kim, Sehoon||Holtzapple, Mark T

publication date

• December 2005

publisher

• Elsevier  Publisher

keywords

• Calcium Compounds
• Cellulose
• Ethanol
• Fermentation
• Glucose
• Hydrolysis
• Lignin
• Oxides
• Polysaccharides
• Saccharomyces Cerevisiae
• Temperature
• Time Factors
• Xylose
• Zea Mays

Digital Object Identifier (DOI)

• 10.1016/j.biortech.2005.01.014

URI

• https://hdl.handle.net/1969.1/2208

start page

• 1994

end page

• 2006

volume

• 96

issue

• 18

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.biortech.2005.01.014