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Title: The Effect of Biomass Densification on Structural Sugar Release and Yield in Biofuel Feedstock and Feedstock Blends

Abstract

In this work examine the behavior of feedstock blends and the effect of specific feedstock densification strategy (pelleting) and on the release and yield of structural carbohydrates in a laboratory-scale dilute acid pretreatment (PT) and enzymatic hydrolysis (EH) assay. We report overall carbohydrate release and yield from the two-stage PT-EH assay for five single feedstocks (2 corn stovers, miscanthus, switchgrass, and hybrid poplar) and three feedstock blends (corn stover-switchgrass, corn stover-switchgrass-miscanthus, and corn stover-switchgrass-hybrid poplar). We first examined the experimental results over time to establish the robustness of the PT-EH assay, which limits the precision of the experimental results. The use of two different control samples in the assay enabled us to identify (and correct for) a small bias in the EH portion of the combined assay for some runs. We then examined the effect of variable pretreatment reaction conditions (residence time, acid loading, and reactor temperature) on the conversion of a single feedstock (single-pass corn stover, CS-SP) in order to establish the range of pretreatment reaction conditions likely to provide optimal conversion data. Finally, we applied the assay to the sixteen materials (8 feedstocks in 2 formats, loose and pelleted) over a more limited range of pretreatment experimental conditions.more » The four herbaceous feedstocks behaved similarly, while the hybrid poplar feedstock required higher pretreatment temperatures for optimal results. As expected, the yield data for three blended feedstocks were the average of the yield data for the individual feedstocks. The pelleting process appears to provide a slightly positive effect on overall total sugar yield.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office (BETO)
OSTI Identifier:
1339170
Alternate Identifier(s):
OSTI ID: 1356882; OSTI ID: 1367540
Report Number(s):
NREL/JA-5100-67906; INL/JOU-16-39719
Journal ID: ISSN 1939-1234; PII: 9813
Grant/Contract Number:  
AC36-08GO28308; AC07-05ID14517
Resource Type:
Published Article
Journal Name:
BioEnergy Research
Additional Journal Information:
Journal Name: BioEnergy Research Journal Volume: 10 Journal Issue: 2; Journal ID: ISSN 1939-1234
Publisher:
Springer Science + Business Media
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; biomass feedstocks; pelleting; densification; recalcitrance; pretreatment; enzymatic hydrolysis; response surface

Citation Formats

Wolfrum, Edward J., Nagle, Nicholas J., Ness, Ryan M., Peterson, Darren J., Ray, Allison E., and Stevens, Daniel M. The Effect of Biomass Densification on Structural Sugar Release and Yield in Biofuel Feedstock and Feedstock Blends. United States: N. p., 2017. Web. doi:10.1007/s12155-017-9813-z.
Wolfrum, Edward J., Nagle, Nicholas J., Ness, Ryan M., Peterson, Darren J., Ray, Allison E., & Stevens, Daniel M. The Effect of Biomass Densification on Structural Sugar Release and Yield in Biofuel Feedstock and Feedstock Blends. United States. https://doi.org/10.1007/s12155-017-9813-z
Wolfrum, Edward J., Nagle, Nicholas J., Ness, Ryan M., Peterson, Darren J., Ray, Allison E., and Stevens, Daniel M. Fri . "The Effect of Biomass Densification on Structural Sugar Release and Yield in Biofuel Feedstock and Feedstock Blends". United States. https://doi.org/10.1007/s12155-017-9813-z.
@article{osti_1339170,
title = {The Effect of Biomass Densification on Structural Sugar Release and Yield in Biofuel Feedstock and Feedstock Blends},
author = {Wolfrum, Edward J. and Nagle, Nicholas J. and Ness, Ryan M. and Peterson, Darren J. and Ray, Allison E. and Stevens, Daniel M.},
abstractNote = {In this work examine the behavior of feedstock blends and the effect of specific feedstock densification strategy (pelleting) and on the release and yield of structural carbohydrates in a laboratory-scale dilute acid pretreatment (PT) and enzymatic hydrolysis (EH) assay. We report overall carbohydrate release and yield from the two-stage PT-EH assay for five single feedstocks (2 corn stovers, miscanthus, switchgrass, and hybrid poplar) and three feedstock blends (corn stover-switchgrass, corn stover-switchgrass-miscanthus, and corn stover-switchgrass-hybrid poplar). We first examined the experimental results over time to establish the robustness of the PT-EH assay, which limits the precision of the experimental results. The use of two different control samples in the assay enabled us to identify (and correct for) a small bias in the EH portion of the combined assay for some runs. We then examined the effect of variable pretreatment reaction conditions (residence time, acid loading, and reactor temperature) on the conversion of a single feedstock (single-pass corn stover, CS-SP) in order to establish the range of pretreatment reaction conditions likely to provide optimal conversion data. Finally, we applied the assay to the sixteen materials (8 feedstocks in 2 formats, loose and pelleted) over a more limited range of pretreatment experimental conditions. The four herbaceous feedstocks behaved similarly, while the hybrid poplar feedstock required higher pretreatment temperatures for optimal results. As expected, the yield data for three blended feedstocks were the average of the yield data for the individual feedstocks. The pelleting process appears to provide a slightly positive effect on overall total sugar yield.},
doi = {10.1007/s12155-017-9813-z},
journal = {BioEnergy Research},
number = 2,
volume = 10,
place = {United States},
year = {Fri Jan 13 00:00:00 EST 2017},
month = {Fri Jan 13 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1007/s12155-017-9813-z

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Cited by: 17 works
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