Optimization of Aerobic Fermentation

As most renewable energy and power companies know, power consumption during aerobic fermentation is one of the major operating costs. At any given point in the process, there are many combinations of airflow and agitation that will give the required mass transfer rate. But the combined power required of the agitator plus the compressor is…

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Biomass Conversion Agitation

Biomass Conversion Agitation.  This PowerPoint by Lee Enterprises Expert, Greg Benz, discussed wet conversion (rather than pyrolysis) of cellulosic materials that can be hydrolyzed into sugars and then converted into biofuels.  It talks about the conversion of corn stover, switchgrass, MSW and wood chips, using batch, fed batch, continuous flow and agitation systems. It also…

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Biomass Solids Agitation via Turbine

What percent of biomass solids can be successfully agitated with a turbine agitator? In the early days of the development of biomass hydrolysis reactors, it was common to use rotating barrels (similar to continuous solids dryers), horizontal paddle mixers, and other mixing apparatus intended principally to mix solids as hydrolysis reactors. This is because high solids…

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Cellulosic Hydrolysis Reactors

Cellulosic Hydrolysis Reactors? Cellulosic materials, such as corn stover, cane, switchgrass, timber waste, municipal solid waste, etc., can be processed into fuels and renewable chemicals. Broadly speaking, there are two main methods: pyrolysis and hydrolysis. The former is relatively independent of feedstock but happens at high temperatures and may have yield losses due to breakdown…

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