Pilot-scale conversion of lime-treated wheat straw into bioethanol: quality assessment of bioethanol and valorization of side streams by anaerobic digestion and combustion

Table 1 Fate of the polysaccharide glucan and xylan initially present in washed lime-treated wheat straw after 53 hours of simultaneous saccharification and fermentation

	Fraction	Glucan (% by weight)	Xylan^c (% by weight)
Hydrolysis products	Polysaccharides (insoluble)^a	25	26
	Oligosaccharides (soluble)	6	52
	Monosaccharides (soluble)	1	24
Fermentation products	Ethanol and carbon dioxide (soluble)	48	---
	Glycerol (soluble)	5	---
Unaccounted for^b	(Insoluble/soluble)	15	---

^aA portion of the initial polysaccharides remained as insoluble polysaccharides.
^bA portion of the initial polysaccharides were not recovered.
^cXylan-derived sugars were not converted by yeast.

ISSN: 2731-3654