Figure 3From: Biobutanol production in a Clostridium acetobutylicum biofilm reactor integrated with simultaneous product recovery by adsorptionKinetics of fed-batch fermentation in the biofilm reactor with fixed-bed adsorption. After 13Â h of batch culture, concentrated medium was fed into the reactor to maintain desired glucose levels and the fixed-bed adsorption was started, as is indicated by arrows. Butanol was selectively adsorbed by the KA-I resin, whereas other solvents accumulated in the fermentation broth. OD, optical density.Back to article page