Table 7.2
1G and 2G biomass and carbohydrate composition along with their ethanol production potential
Generation
Biomass
Carbohydrate
composition
Ethanol yield
Ethanol production
potential (million liters)
References
Theoretical
(g/L)
Practical
(g/L)
Type
Name of
biomass
1G
Starch based
Sweet
potato
10–20%
38-45
89
270.23
Lareo et al. (2013)
Cassava
20–25%
42.4
106
330.76
Rajandran (2013)
Potato
15–20%
34.9
42.30
290.65
Lareo et al. (2013)
Sugar based
Sugar beet
25–30%
39.40
45.72
251.30
Salazar-Ordóñez et al. (2013)
Sugarcane
12–16%
90
89.73
402.30
Liang et al. (2008); Cardona
et al. (2010)
2G
Agricultural
residues
Bagasse
20–30%
36.5
41.06
290
Maryana et al. (2014)
Corn
stover
30–45%
112.7
a
64.4%
302.83
(Humbird and Aden (2009);
Liew et al. (2014))
Grasses
Switch
grass
30–45%
46.5
54.06
32,915
b
Keshwani and Cheng (2009)
Elephant
grass
22–24%
23.4
36.4
23,700
b
Aiyejagbara et al. (2016)
Moroccan
grass
27–38%
17.62
23.11
6762
b
Semhaoui et al. (2017)
a
gal/ton
b
L/ha/year
7 Bioethanol Production: Generation-Based Comparative Status Measurements
159