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Title: Hot Water Extraction: Short Rotation Willow, Mixed Hardwoods, and Process Considerations

Abstract

Short rotation woody crops (SRWC) like shrub willow are highly productive biomass resources of interest for energy and fuel applications. Hot water extraction (HWE) as an upgrading tool to enable the use of willow biomass in pellet applications has been proposed, and is of increasing interest. This study treats willow and mixes of willow and conventional mixed hardwood feedstock with HWE in a tumbling laboratory reactor to elucidate the effects of time, temperature, feedstock mixes, and other process considerations (water:biomass ratio, presteaming, counter-current processing) on mass removals and other extraction outcomes (e.g., sugar, acetate, and furan yields). Results demonstrated alignment of extraction outcomes with P-factor from 155 °C to 175 °C, with a good compromise of removed mass and co-product potential in the range from 575–800 P-factor. The preferred condition was chosen as 575 P-factor. HWE of mixes of willow and hardwood feedstocks showed a linear response of extraction outcomes to willow:hardwood ratios. Testing of water:biomass ratios demonstrated that this is a significant consideration, with each outcome being affected somewhat differently, and indicating that HWE is more diffusion dependent than expected. Presteaming shows little to no effect on extraction outcomes, while multi-stage cooks simulating counter-current operation indicate a significant potentialmore » value in counter-current extraction.« less

Authors:
ORCiD logo [1];  [1]; ORCiD logo [2];  [3]
  1. Applied Biorefinery Sciences, Syracuse, NY (United States)
  2. SUNY College of Environmental Science and Forestry, Syracuse, NY (United States)
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
State Univ. of New York, Syracuse, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1726085
Grant/Contract Number:  
EE0006638
Resource Type:
Accepted Manuscript
Journal Name:
Energies (Basel)
Additional Journal Information:
Journal Name: Energies (Basel); Journal Volume: 13; Journal Issue: 8; Journal ID: ISSN 1996-1073
Publisher:
MDPI AG
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; biorefining; biomass; short rotation woody crops; willow biomass; hot water extraction

Citation Formats

Wood, Christopher D., Amidon, Thomas E., Volk, Timothy A., and Emerson, Rachel M.. Hot Water Extraction: Short Rotation Willow, Mixed Hardwoods, and Process Considerations. United States: N. p., 2020. Web. https://doi.org/10.3390/en13082071.
Wood, Christopher D., Amidon, Thomas E., Volk, Timothy A., & Emerson, Rachel M.. Hot Water Extraction: Short Rotation Willow, Mixed Hardwoods, and Process Considerations. United States. https://doi.org/10.3390/en13082071
Wood, Christopher D., Amidon, Thomas E., Volk, Timothy A., and Emerson, Rachel M.. Tue . "Hot Water Extraction: Short Rotation Willow, Mixed Hardwoods, and Process Considerations". United States. https://doi.org/10.3390/en13082071. https://www.osti.gov/servlets/purl/1726085.
@article{osti_1726085,
title = {Hot Water Extraction: Short Rotation Willow, Mixed Hardwoods, and Process Considerations},
author = {Wood, Christopher D. and Amidon, Thomas E. and Volk, Timothy A. and Emerson, Rachel M.},
abstractNote = {Short rotation woody crops (SRWC) like shrub willow are highly productive biomass resources of interest for energy and fuel applications. Hot water extraction (HWE) as an upgrading tool to enable the use of willow biomass in pellet applications has been proposed, and is of increasing interest. This study treats willow and mixes of willow and conventional mixed hardwood feedstock with HWE in a tumbling laboratory reactor to elucidate the effects of time, temperature, feedstock mixes, and other process considerations (water:biomass ratio, presteaming, counter-current processing) on mass removals and other extraction outcomes (e.g., sugar, acetate, and furan yields). Results demonstrated alignment of extraction outcomes with P-factor from 155 °C to 175 °C, with a good compromise of removed mass and co-product potential in the range from 575–800 P-factor. The preferred condition was chosen as 575 P-factor. HWE of mixes of willow and hardwood feedstocks showed a linear response of extraction outcomes to willow:hardwood ratios. Testing of water:biomass ratios demonstrated that this is a significant consideration, with each outcome being affected somewhat differently, and indicating that HWE is more diffusion dependent than expected. Presteaming shows little to no effect on extraction outcomes, while multi-stage cooks simulating counter-current operation indicate a significant potential value in counter-current extraction.},
doi = {10.3390/en13082071},
journal = {Energies (Basel)},
number = 8,
volume = 13,
place = {United States},
year = {2020},
month = {4}
}

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