Fermentation of corn stover to carboxylic acids. Academic Article

abstract

• This article describes countercurrent fermentation to anaerobically convert corn stover and pig manure to mixed carboxylic acids using a mixed culture of mesophilic microorganisms. Corn stover was pretreated with lime to increase digestibility. The Continuum Particle Distribution Model (CPDM) was used to simulate continuous fermentors based on data collected from batch experiments. This model saves considerable time in determining optimum operating conditions. For 80% corn stover/20% pig manure, the highest total carboxylic acid productivity was 1.81 g/(L of liquid. d) at a concentration of 21.4 g total acid/L. The highest total acid selectivity, yield, and conversion were 0.714 g total acid/g volatile solids (VS) digested, 0.550 g total acid/g VS fed, and 0.770 g VS digested/g VS fed, respectively, at a concentration of 16.0 g total acid/L. CPDM predicted the acid concentration and conversion within 13.4 and 11.6%, respectively.

authors

• Holtzapple, Mark

published proceedings

• Biotechnol Bioeng

author list (cited authors)

• Thanakoses, P., Black, A. S., & Holtzapple, M. T.

citation count

• 102

complete list of authors

• Thanakoses, Piyarat||Black, Amanda S||Holtzapple, Mark T

publication date

• July 2003

publisher

• Wiley  Publisher

published in

• Biotechnology and Bioengineering  Journal

keywords

• Animals
• Biotechnology
• Carboxylic Acids
• Cattle
• Cellulase
• Fermentation
• Hydrogen-Ion Concentration
• Kinetics
• Manure
• Models, Biological
• Rumen
• Seeds
• Swine
• Zea Mays

PubMed Central ID

• 12768625

Digital Object Identifier (DOI)

• 10.1002/bit.10663

start page

• 191

end page

• 200

volume

• 83

issue

• 2

URL

• http%3A%2F%2Fdx.doi.org%2F10.1002%2Fbit.10663