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Development of an ammonia pretreatment that creates synergies between biorefineries and advanced biomass logistics models.
- Source :
- Green Chemistry; 6/7/2022, Vol. 24 Issue 11, p4443-4462, 20p
- Publication Year :
- 2022
-
Abstract
- A novel ammonia-based pretreatment for densified lignocellulosic biomass was developed to reduce ammonia usage and integrate with viable biomass logistics scenarios. The COmpacted Biomass with Recycled Ammonia (COBRA) pretreatment performed at 100 °C allows >95% conversion of sugarcane bagasse (SCB) carbohydrates into soluble monomeric and oligomeric sugars (glucose and xylose) using industrially relevant 6% glucan loading (∼21% solids loading) enzymatic hydrolysis conditions at reduced enzyme loadings. Pretreatment via COBRA with simultaneous lignin extraction (COBRA-LE) improved Saccharomyces cerevisiae 424A(LNH-ST) metabolic yield from 89% to 97.5% relative to COBRA without delignification, allowing a process ethanol yield of 71.6%. A technoeconomic analysis on SCB biorefining to ethanol in the state of São Paulo, Brazil, compared COBRA to other mature technologies, such as AFEX and steam-explosion. Amongst all scenarios studied, biorefineries based on COBRA-LE pretreatment offered the lowest average minimum ethanol selling price of US$1.45 per gallon ethanol. COBRA pretreatment was subsequently tested on perennial grasses and hardwoods, and >80% total sugar yields were achieved for all cases. [ABSTRACT FROM AUTHOR]
- Subjects :
- BIOMASS
LIGNOCELLULOSE
AMMONIA
GLUCANS
SACCHAROMYCES cerevisiae
CARBOHYDRATES
Subjects
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 24
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 157297158
- Full Text :
- https://doi.org/10.1039/d2gc00488g