Replacing process water and nitrogen sources with biogas slurry during cellulosic ethanol production

Table 1 Characteristics of corn straw

	Original corn straw	Corn straw pretreated with 100% biogas slurry	Corn straw pretreated with fresh water
NDF, % dry matter	52.78 ± 1.06	52.93 ± 0.51	51.84 ± 0.86
ADF, % dry matter	44.33 ± 1.26	43.83 ± 0.43	43.67 ± 1.14
ADL, % dry matter	21.15 ± 0.57	17.26 ± 0.53	17.43 ± 0.56
Cellulose (= ADF − ADL) % dry matter	23.18 ± 1.96	26.57 ± 0.35	26.24 ± 1.71
Hemicellulose (= NDF − ADF) % dry matter	8.45 ± 0.86	9.10 ± 0.89	8.17 ± 0.58
Lignin (= ADL) % dry matter	21.15 ± 0.57	17.26 ± 0.53	17.43 ± 0.56
N, % dry matter	1.08 ± 0.25	1.18 ± 0.72	1.24 ± 0.34
C, % dry matter	44.96 ± 2.34	34.38 ± 0.52	31.48 ± 1.56

All data are the average of triplicates with standard deviations of the means (n = 3) at α = 0.05

ISSN: 2731-3654