Feedstock/pretreatment screening for bioconversion of sugar and lignin streams via deacetylated disc-refining

Table 1 Table of DDR pretreatment conditions

Condition #	NaOH loading (g/kg dry biomass)	Residence time (min)	Disc-refine gap CS & SWG (in.)	Disc-refine gap pop (in.)
1	60	120	0.005	0.001
2	60	120	0.015	0.005
3	60	240	0.005	0.001
4	60	240	0.015	0.005
5	80	120	0.005	0.001
6	80	120	0.015	0.005
7	80	240	0.005	0.001
8	80	240	0.015	0.005
9	100	120	0.005	0.001
10	100	120	0.015	0.005
11	100	240	0.005	0.001
12	100	240	0.015	0.005

Table of DDR pretreatment conditions. The sodium hydroxide concentration ranged from 60 to 100 g per kg of dry biomass and the residence time ranged from 120 to 240 min for deacetylation. Corn stover and switchgrass had the same gap space, 0.005–0.015 in. between discs in the disc-refiner while poplar used a smaller gap space, 0.001–0.005 in. between discs due to particle size after deacetylation

ISSN: 2731-3654