Biotechnology for Biofuels and Bioproducts

Table 2 2G cost items and 2G MESP for all cases in US$/L

From: Effects of production and market factors on ethanol profitability for an integrated first and second generation ethanol plant using the whole sugarcane as feedstock

	C5 biogas						C5 EtOH
Cost items for 2G MESP	B			B + L			B			B + L
	10% WIS	20% WIS	30% WIS	10% WIS	20% WIS	30% WIS	10% WIS	20% WIS	30% WIS	10% WIS	20% WIS	30% WIS
Capital cost, 48 h	0.41	0.33	0.31	0.37	0.31	0.29	0.17	0.14	0.13	0.16	0.13	0.12
Capital cost, 96 h	0.50	0.39	0.35	0.46	0.33	0.31	0.22	0.17	0.15	0.21	0.16	0.14
Labour, maintenance, 48 h	0.11	0.09	0.08	0.10	0.08	0.08	0.05	0.04	0.03	0.04	0.03	0.03
Labour, maintenance, 96 h	0.14	0.10	0.09	0.12	0.09	0.08	0.06	0.04	0.04	0.06	0.04	0.04
Net electricity cost, 48 h	0.12	0.11	0.11	0.17	0.16	0.16	0.13	0.14	0.14	0.15	0.15	0.15
Net electricity cost, 96 h	0.13	0.12	0.12	0.18	0.17	0.17	0.13	0.14	0.14	0.16	0.16	0.16
Enzymes, 100% EHE	0.31	0.31	0.31	0.31	0.31	0.31	0.17	0.17	0.17	0.17	0.17	0.17
Enzymes, 250% EHE	0.12	0.12	0.12	0.12	0.12	0.12	0.07	0.07	0.07	0.07	0.07	0.07
Acid	0.04	0.04	0.04	0.04	0.04	0.04	0.02	0.02	0.02	0.02	0.02	0.02
Base	0.007	0.007	0.007	0.008	0.008	0.008	0.004	0.004	0.004	0.004	0.004	0.004
Water consumption	0.009	0.009	0.005	0.005	0.003	0.003	0.009	0.009	0.005	0.005	0.003	0.003
2G MESP {48 h, 100% EHE}	1.01	0.91	0.88	1.01	0.92	0.90	0.55	0.53	0.50	0.56	0.51	0.50
2G MESP {96 h, 100% EHE}	1.14	0.99	0.94	1.14	0.96	0.93	0.63	0.57	0.54	0.63	0.56	0.54
2G MESP {48 h, 250% EHE}	0.82	0.71	0.69	0.82	0.73	0.70	0.45	0.42	0.39	0.45	0.41	0.40
2G MESP {96 h, 250% EHE}	0.95	0.79	0.75	0.95	0.77	0.74	0.52	0.45	0.43	0.52	0.45	0.43

For case definitions see Table 1. 2G, second generation; B, bagasse; B + L, bagasse with addition of leaves; C5 biogas, biogas production from pentoses; C5 EtOH, pentose fermentation to ethanol; EHE, enzymatic hydrolysis efficiency; MESP, minimum ethanol selling price; WIS, water-insoluble solids.

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