A New Proposal of Cellulosic Ethanol to Boost Sugarcane Biorefineries: Techno-Economic Evaluation

Table 10

Maximum enzyme cost to have payback lower than 10 years for each case studied.

	Enzyme concentration*
	2 FPU/g	5 FPU/g	10 FPU/g
	(US$/kg enzyme)
Case 1	6	2	n
Case 2	6	2	n
Case 3	10	4	2
Case 3L	10	4	2
Case 4	4	2	n

 *Enzyme cost analyzed were of 2, 4, 6, and 10 US$/kg enzyme; enzyme concentration was expressed only regarding the cellulase load but β-glicosidase load also varies in accordance with the values described in Table 7.
n: none of the studied values.