Journal
FUEL PROCESSING TECHNOLOGY
Volume 215, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fuproc.2021.106739
Keywords
Cellulose; Corn stover; Pretreatment; Molten salt hydrates; Hydrolysis
Funding
- National Key Research and Development Program of China [2018YFB1501402]
- National Natural Science Foundation of China [51906072]
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Molten salt hydrate (MSH) pretreatment technology shows remarkable degradation effects on cellulose hydrolysis, especially more prominent in corn stover.
Molten salt hydrates (MSHs) are remarkable in breaking through the recalcitrant structure of microcrystalline cellulose and raw biomass. After being pretreated in 60 wt% LiBr at 130 degrees C for 2 h, cellulose crystallinity as well as degree of polymerization (DP) decreased. It was found that 91.3% yield of pretreated cellulose was removed from MSHs by filteration followed by being hydrolyzed into glucose with a high yield of 75.3% by dilute acid under mild reaction conditions. The pretreatment process also works on raw corn stover hydrolysis. After being pretreated at 100 degrees C for 5 h, 88.4% yield of cellulose in biomass was recovered and can be hydrolyzed into 54.9% yield of glucose with dilute acid. It was found that the cellulose in corn stover can be easier degraded compared with microcrystalline cellulose during MSHs pretreatment, which dues to the formation of acetic acid from hemicellulose hydrolysis. The proposed pretreatment technique presents a promising potential for glucose production from biomass in a commercial way.
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