A low-cost solid–liquid separation process for enzymatically hydrolyzed corn stover slurries
Abstract
Solid-liquid separation of intermediate process slurries is required in some process configurations for the conversion of lignocellulosic biomass to transportation fuels. Thermochemically pretreated and enzymatically hydrolyzed corn stover slurries have proven difficult to filter due to formation of very low permeability cakes that are rich in lignin. Treatment of two different slurries with polyelectrolyte flocculant was demonstrated to increase mean particle size and filterability. Filtration flux was greatly improved, and thus scaled filter unit capacity was increased approximately 40-fold compared with unflocculated slurry. Although additional costs were accrued using polyelectrolyte, techno-economic analysis revealed that the increase in filter capacity significantly reduced overall production costs. Fuel production cost at 95% sugar recovery was reduced by $1.35 US per gallon gasoline equivalent for dilute-acid pretreated and enzymatically hydrolyzed slurries and $3.40 for slurries produced using an additional alkaline de-acetylation preprocessing step that is even more difficult to natively filter.
- Authors:
-
- National Renewable Energy Lab. (NREL), Golden, CO (United States). National Bioenergy Center
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1220661
- Alternate Identifier(s):
- OSTI ID: 1250317
- Report Number(s):
- NREL/JA-5100-63424
Journal ID: ISSN 0960-8524
- Grant/Contract Number:
- AC36-08GO28308; EE0005006
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Bioresource Technology
- Additional Journal Information:
- Journal Volume: 187; Journal Issue: C; Journal ID: ISSN 0960-8524
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; flocculation; solid-liquid separation; filtration; biofuels
Citation Formats
Sievers, David A., Lischeske, James J., Biddy, Mary J., and Stickel, Jonathan J. A low-cost solid–liquid separation process for enzymatically hydrolyzed corn stover slurries. United States: N. p., 2015.
Web. doi:10.1016/j.biortech.2015.03.087.
Sievers, David A., Lischeske, James J., Biddy, Mary J., & Stickel, Jonathan J. A low-cost solid–liquid separation process for enzymatically hydrolyzed corn stover slurries. United States. https://doi.org/10.1016/j.biortech.2015.03.087
Sievers, David A., Lischeske, James J., Biddy, Mary J., and Stickel, Jonathan J. Wed .
"A low-cost solid–liquid separation process for enzymatically hydrolyzed corn stover slurries". United States. https://doi.org/10.1016/j.biortech.2015.03.087. https://www.osti.gov/servlets/purl/1220661.
@article{osti_1220661,
title = {A low-cost solid–liquid separation process for enzymatically hydrolyzed corn stover slurries},
author = {Sievers, David A. and Lischeske, James J. and Biddy, Mary J. and Stickel, Jonathan J.},
abstractNote = {Solid-liquid separation of intermediate process slurries is required in some process configurations for the conversion of lignocellulosic biomass to transportation fuels. Thermochemically pretreated and enzymatically hydrolyzed corn stover slurries have proven difficult to filter due to formation of very low permeability cakes that are rich in lignin. Treatment of two different slurries with polyelectrolyte flocculant was demonstrated to increase mean particle size and filterability. Filtration flux was greatly improved, and thus scaled filter unit capacity was increased approximately 40-fold compared with unflocculated slurry. Although additional costs were accrued using polyelectrolyte, techno-economic analysis revealed that the increase in filter capacity significantly reduced overall production costs. Fuel production cost at 95% sugar recovery was reduced by $1.35 US per gallon gasoline equivalent for dilute-acid pretreated and enzymatically hydrolyzed slurries and $3.40 for slurries produced using an additional alkaline de-acetylation preprocessing step that is even more difficult to natively filter.},
doi = {10.1016/j.biortech.2015.03.087},
journal = {Bioresource Technology},
number = C,
volume = 187,
place = {United States},
year = {Wed Jul 01 00:00:00 EDT 2015},
month = {Wed Jul 01 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
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- Bradfield, Michael F. A.; Mohagheghi, Ali; Salvachúa, Davinia
- Biotechnology for Biofuels, Vol. 8, Issue 1
Succinic acid production on xylose-enriched biorefinery streams by Actinobacillus succinogenes in batch fermentation
journal, February 2016
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- Biotechnology for Biofuels, Vol. 9, Issue 1
Continuous succinic acid production by Actinobacillus succinogenes on xylose-enriched hydrolysate
journal, November 2015
- Bradfield, Michael F. A.; Mohagheghi, Ali; Salvachúa, Davinia
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Succinic acid production on xylose-enriched biorefinery streams by Actinobacillus succinogenes in batch fermentation
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- Biotechnology for Biofuels, Vol. 9, Issue 1