Optimization of NaOH-catalyzed steam pretreatment of empty fruit bunch

Table 3 Summary of SSF conditions

Pretreatment conditions	Cellulase loading (FPU/g glucan)	Maximum ethanol concentration (g/L)	Productivity (g/L-h)	Ethanol yield, %³
1.5% NaOH, 160°C, 10 min¹	40	22.5	0.68	80
3% NaOH, 160°C, 8 min¹		28.0	0.84	85
3% NaOH, 160°C, 11 min 20 sec¹		29.4	0.89	88
3% NaOH, 160°C, 11 min 20 sec¹	20	23.7	0.72	71
	40	25.3	0.77	76
	60	29.4	0.89	88
3% NaOH, 150°C, 30 min²	40	25.6	0.78	78

ISSN: 2731-3654