Figure 2From: A comparison of three pH control methods for revealing effects of undissociated butyric acid on specific butanol production rate in batch fermentation of Clostridium acetobutylicum Effect of CaCO 3 supplementation on butanol production by C. acetobutylicum (A: CaCO 3 supplementation at 2 g/L; B CaCO 3 supplementation at 5 g/L; C: CaCO 3 supplementation at 8 g/L). Back to article page