Fermentation of rice straw/chicken manure to carboxylic acids using a mixed culture of marine mesophilic micoorganisms. Academic Article uri icon

abstract

  • Countercurrent fermentation of rice straw and chicken manure to carboxylic acids was performed using a mixed culture of marine mesophilic microorganisms. To increase the digestibility of the biomass, rice straw, and chicken manure were pretreated with 0.1 g Ca(OH)2/g biomass. Fermentation was performed for 80% rice straw and 20% chicken manure at various volatile solid loading rates (VSLR) and liquid residence times (LRT). The highest acid productivity of 1.69 g/(L x d) occurred at a total acid concentration of 32.4 g/L. The highest conversion (0.69 g VS digested/g VS fed) and yield (0.29 g total acids/g VS fed) were at a total acid concentration of 25 g/L. A Continuum Particle Distribution Model of the process predicted the experimental total acid concentration and conversion results with an average error of 6.41% and 6.15%, respectively. Results show how total acid concentrations, conversions, and yields vary with VSLR and LRT in the MixAlco process.

published proceedings

  • Appl Biochem Biotechnol

author list (cited authors)

  • Agbogbo, F. K., & Holtzapple, M. T.

citation count

  • 17

complete list of authors

  • Agbogbo, Frank K||Holtzapple, Mark T

publication date

  • June 2006