Enhanced production of butyric acid through immobilization of Clostridium tyrobutyricum in a novel inner disc-shaped matrix bioreactor

Table 3 Comparison between the inner disc-shaped matrix bioreactor and other bioreactors in terms of butyric acid production

Bioreactor	Operating mode	Butyrate (g/L)	Yield (g/g)	Productivity (g/L·h)	Reference
Fibrous bed reactor	Batch	13.7–43.2	0.35–0.46	0.57–1.23	Huang et al. 2010; Jiang et al. 2010; Huang et al. 2011)
	Fed-batch	24.9–60.4	0.29–0.38	0.33–1.14
	Repeated-batch	10.1–27.5	0.29–0.50	0.33–3.35
Inner disc-shaped matrix bioreactor	Batch	23.7	0.48	0.84	This study
	Fed-batch	61.9	0.42	0.72
	Repeated-batch	21.5–25.5	0.41–0.47	0.91–1.31

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