Biobutanol production in a Clostridium acetobutylicum biofilm reactor integrated with simultaneous product recovery by adsorption

Table 1 Effects of resin quantity on the final product yield

Resin		Butanol (g/L)			Butyric acid (g/L)			Acetic acid (g/L)	Acetoin (g/L)	Acetone (g/L)
Amount (g/L)	Time^a(h)	Aqueous	Adsorbed	Total	Aqueous	Adsorbed	Total	Acetic acid (g/L)	Acetoin (g/L)	Acetone (g/L)
0	0 to 80	11.8		11.8			0.29	0.66	1.81	4.63
40	0 to 70	6.87	4.42	11.3	0.50	0.37	0.87	0.81	2.22	3.82
50	0 to 60	6.25	4.76	11.0	0.77	0.46	1.23	1.28	3.61	2.02
50	40 to 65	6.42	5.09	11.5	0.35	0.29	0.64	0.79	3.44	2.58
60	0 to 45	5.11	4.62	9.73	0.98	0.94	1.93	1.51	3.83	1.90
60	40 to 60	5.55	4.81	10.4	0.58	0.54	1.12	0.77	3.20	2.92
80	0 to 45	2.51	5.31	7.81	1.26	2.27	3.53	1.93	3.09	1.78

^aFrom the time the resin was added to the time the fermentation ended. For example, 40 to 65 means that resin was added to the culture at 40 h and the fermentation ended at 65 h. Data for ethanol are not shown. The experiments were performed in triplicate, and the mean value was calculated.

ISSN: 2731-3654