Combined production of biogas and ethanol at high solids loading from wheat straw impregnated with acetic acid: experimental study and techno-economic evaluation

Sustainable Chemical Processes

Table 1 Recovery of WIS, glucan, and xylan after steam pretreatment

Pretreatment temperature	190 °C	200 °C	210 °C
WIS of pretreated material (%)	8.1	9.7	8.3
Recovery (%)
WIS	59.6	59.0	54.9
Glucan in WIS	99.3	102.8	96.0
Glucan in hydrolysate	3.8	4.0	5.3
Total glucan recovery	103.1	106.8	101.3
Xylan in WIS	25.7	14.4	7.7
Xylan in hydrolysate	70.2	46.1	32.1
Total xylan recovery	96.0	60.5	39.8

Recoveries are expressed as % of the amount available in the raw material. The analyses were performed in duplicates, and the relative standard deviations were maximum 6 %