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Title: Two-stage dilute-acid and organic-solvent lignocellulosic pretreatment for enhanced bioprocessing

Journal Article · · Bioresource Technology
 [1];  [1];  [2];  [1]
  1. Florida A&M Univ. - Florida State Univ., Tallahassee, FL (United States). College of Engineering
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)

A two stage pretreatment approach for biomass is developed in the current work in which dilute acid (DA) pretreatment is followed by a solvent based pretreatment (N-methyl morpholine N oxide -- NMMO). When the combined pretreatment (DAWNT) is applied to sugarcane bagasse and corn stover, the rates of hydrolysis and overall yields (>90%) are seen to dramatically improve and under certain conditions 48 h can be taken off the time of hydrolysis with the additional NMMO step to reach similar conversions. DAWNT shows a 2-fold increase in characteristic rates and also fractionates different components of biomass -- DA treatment removes the hemicellulose while the remaining cellulose is broken down by enzymatic hydrolysis after NMMO treatment to simple sugars. The remaining residual solid is high purity lignin. Lastly, future work will focus on developing a full scale economic analysis of DAWNT for use in biomass fractionation.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office
Grant/Contract Number:
AC36-08GO28308; AC36-08-GO28308
OSTI ID:
1326330
Alternate ID(s):
OSTI ID: 1396350
Report Number(s):
NREL/JA-5100-66759
Journal Information:
Bioresource Technology, Vol. 220, Issue C; ISSN 0960-8524
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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