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Laboratory method for high-solids countercurrent fermentations.

M K Ross·M T Holtzapple
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Abstract

Equipment and procedures were developed to study the conversion of lignocellulosic biomass to carboxylic acids using high-solids countercurrent fermentations. Countercurrent fermentations of cattle manure yielded a rapid fermentation (maximum 2.98 g of total acid/[L x d]) with high acid concentrations (maximum of 32.5 g of total acid/L), but the acid yield tended to be low (maximum of 0.24 g of total acid/g of volatile solids). Countercurrent fermentations of a mixture of 80% municipal solid waste/20% sewage sludge fermented more slowly (maximum of 1.98 g of total acid/[L x d]) with a lower acid concentration (maximum of 26.5 g of total acids/L), but higher acid yields were achieved (maximum of 0.34 g of total acid/g of volatile solids).

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AnimalsBioreactorsCarboxylic AcidsCattleCelluloseFermentationHydrogen-Ion ConcentrationLigninManureSewageTemperatureTime FactorsWaste ManagementJournal Article

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M K Ross, M T Holtzapple. 2001. Laboratory method for high-solids countercurrent fermentations.. https://doi.org/10.1385/abab%3A94%3A2%3A111

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