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 3 Chemical oxygen demand balance for the degradability of the liquid fraction (in grams of O₂ based on a liter of effluent)

		Chemical oxygen demand (g O₂)	Percentage of initial total chemical oxygen demand value
Initial state	Total	134.9	100
	Dissolved	54.6	40
	Non-dissolved^a	80.3	60
Final state	Methane	77.2	57
	Dissolved	9.4	7
	Non-dissolved^a	48.2	36

^aNon-dissolved chemical oxygen demand was calculated from the measured values for total and dissolved chemical oxygen demand.

ISSN: 2731-3654