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Alkaline Peroxide Delignification of Corn Stover
- Source :
- ACS Sustainable Chemistry & Engineering. 5:6310-6321
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- Selective biomass fractionation into carbohydrates and lignin is a key challenge in the conversion of lignocellulosic biomass to fuels and chemicals. In the present study, alkaline hydrogen peroxide (AHP) pretreatment was investigated to fractionate lignin from polysaccharides in corn stover (CS), with a particular emphasis on the fate of the lignin for subsequent valorization. The influence of peroxide loading on delignification during AHP pretreatment was examined over the range of 30–500 mg H2O2/g dry CS at 50 °C for 3 h. Mass balances were conducted on the solid and liquid fractions generated after pretreatment for each of the three primary components, lignin, hemicellulose, and cellulose. AHP pretreatment at 250 mg H2O2/g dry CS resulted in the pretreated solids with more than 80% delignification consequently enriching the carbohydrate fraction to >90%. Two-dimensional nuclear magnetic resonance (2D-NMR) spectroscopy of the AHP pretreated residue shows that, under high peroxide loadings (>250 mg H2O2...
- Subjects :
- 0106 biological sciences
010405 organic chemistry
Renewable Energy, Sustainability and the Environment
General Chemical Engineering
food and beverages
Lignocellulosic biomass
General Chemistry
Fractionation
complex mixtures
01 natural sciences
Peroxide
0104 chemical sciences
chemistry.chemical_compound
Corn stover
chemistry
010608 biotechnology
Environmental Chemistry
Lignin
Organic chemistry
Hemicellulose
Cellulose
Hydrogen peroxide
Nuclear chemistry
Subjects
Details
- ISSN :
- 21680485
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- ACS Sustainable Chemistry & Engineering
- Accession number :
- edsair.doi...........088106fac337ff9626e0019d6ab0eab9