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 7 Recovery factors in Aspen Plus for the pretreatment stage

Components	Straw comp. used in Aspen Plus (% of DM)	Recovery factors used in Aspen Plus WIS (%)	Recovery factors used in Aspen Plus liquid (%)
Glucan	32.7	98	2
Xylan	23.4	14	55
Arabinan	4.7	21	33
Lignin	22.2	88^a	12
Ash	1.8	62^a	38
Acetate	1.8	10	90
Extractives
Semivol	8.3	0	100
Nonvol	5.1	0	100

^a12 % of the lignin and 38 % of the ash were converted to soluble lignin and soluble ash, respectively, in the model, but they were still modeled, because they were present in the solid fraction