Enhanced Butanol Production by Clostridium acetobutylicum NCIMB 13357 Grown on Date Fruit as Carbon Source in P2 Medium

Table 1

Effect of substrate concentrations on yield and productivity of butanol and ABE.

DF concentration (g/L)	TC consumption (g/L)	Yield of solvents (g/g)	Yield of butanol (g/g)	Productivity of solvents (g/L/h)	Biobutanol productivity (g/L/h)
10	4.965	0.35	0.32	0.025	0.023
20	9.7	0.45	0.36	0.062	0.05
30	15	0.53	0.42	0.11	0.09
40	18.9	0.61	0.44	0.17	0.12
50	23.2	0.63	0.48	0.21	0.16
60	25.4	0.55	0.4	0. 2	0.15
70	29.6	0.49	0.34	0.2	0.14
80	35.4	0.44	0.3	0.22	0.152
90	40.2	0.38	0.27	0.22	0.15
100	47.6	0.35	0.22	0.24	0.15

DF: date fruit concentration; TC: total carbohydrate; RCM: reinforced clostridial medium.