Biobutanol is increasingly attracting attention as an alternative to traditional petroleum-derived fossil fuels. Compared to ethanol, butanol has several advantages including high energy density, low water absorption and easy application to the existing gasoline engine. However, butanol fermentation has several obstacles: the low butanol concentration in the fermentation broth due to the toxicity of butanol to organisms that produce it, and the lack of an energy-efficient method of recovering butanol from the fermentation broth. Many studies tried to recover butanol using in-situ recovery technologies, including gas stripping, extraction, adsorption, etc. This research focused on butanol fermentation with in-situ adsorption to alleviate butanol toxicity and increase butanol production. Various adsorbents, including activated carbon, resin L-493 and SD-2 were evaluated for their butanol adsorption capacity. These adsorbents were then tested in the integrated adsorption-fermentation, which greatly reduced butanol inhibition and enhanced butanol yield, productivity and the final butanol titer.

Butanol fermentation integrated with adsorption for<i> </i>in situ recovery

243rd National Meeting (2012)

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Butanol fermentation integrated with adsorption for in situ recovery