Continuous acetone-butanol-ethanol production by corn stalk immobilized cells.
Corn stalk was used as a support to immobilize Clostridia beijerinckii ATCC 55025 in the fermentation process of acetone, butanol, and ethanol production. The effect of the dilution rate on solvent production was examined in a steady-state 20-day continuous flow operation. The maximum total solvent concentration of 8.99 g l(-1) was obtained at a dilution rate of 0.2 h(-1). Increasing the dilution rate between 0.2 and 1.0 h(-1) resulted in an increased solvent productivity, and the highest solvent productivity was obtained at 5.06 g l(-1) h(-1) with a dilution rate of 1 h(-1). The maximum solvent yield from glucose of 0.32 g g(-1) was observed at 0.25 h(-1). The cell adsorption and morphology change during the growth on corn stalk support were examined by the SEM.
Zhang
Yuedong
Y
Key Laboratory of Biofuel, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 266071 Qingdao, China.
Ma
Yujiu
Y
Yang
Fangxiao
F
Zhang
Chunhui
C
D000096:Acetone / Q000378:metabolism*; D019149:Bioreactors; D000440:Butanols / Q000378:metabolism*; D018914:Cells, Immobilized / Q000378:metabolism*; D003013:Clostridium / Q000254:growth & development / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D003313:Zea mays / Q000382:microbiology*
D000440:Butanols; D000096:Acetone; D000431:Ethanol