Analysis of switchgrass-derived bio-oil and associated aqueous phase generated in a semi-pilot scale auger pyrolyzer
Abstract
To efficiently utilize water-soluble compounds in bio-oil and evaluate the potential effects of these compounds on processes such as microbial electrolysis, our study investigated the physico-chemical properties of bio-oil and the associated aqueous phase generated from switchgrass using a semi-pilot scale auger pyrolyzer. Combining separation and detection strategies with organic solvent extraction, an array of analytical instruments and methods were used to identify and quantify the chemical constituents. Separation of an aqueous phase from crude bio-oil was achieved by adding water (water: crude bio-oil at 4:1 in weight), which resulted in a partition of 61 wt.% of the organic compounds into a bio-oil aqueous phase (BOAP). GC/MS analysis for BOAP identified over 40 compounds of which 16 were quantified. Acetic acid, propionic acid, and levoglucosan are the major components in BOAP. In addition, a significant portion of chemicals that have the potential to be upgraded to hydrocarbon fuels were extracted to BOAP (77 wt.% of the alcohols, 61 wt.% of the furans, and 52 wt.% of the phenolic compounds in crude bio-oil). Valorization of the BOAP may require conversion methods capable of accommodating a very broad substrate specificity. Ultimately, a better separation strategy is needed to selectively remove the acidicmore »
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States). Biosystems Engineering and Soil Science
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Bioscience Division
- Univ. of Tennessee, Knoxville, TN (United States). Center for Renewable Carbon
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office
- OSTI Identifier:
- 1311225
- Alternate Identifier(s):
- OSTI ID: 1348254
- Grant/Contract Number:
- AC05-00OR22725; FOA-0000812
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Analytical and Applied Pyrolysis
- Additional Journal Information:
- Journal Volume: 119; Journal Issue: C; Journal ID: ISSN 0165-2370
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; Bio-oil; Partition; Bio-oil aqueous phase; HPLC-PDA; GC/MS; GC-FID
Citation Formats
Ren, Shoujie, Ye, X. Philip, Borole, Abhijeet P., Kim, Pyoungchung, and Labbé, Ncole. Analysis of switchgrass-derived bio-oil and associated aqueous phase generated in a semi-pilot scale auger pyrolyzer. United States: N. p., 2016.
Web. doi:10.1016/j.jaap.2016.03.013.
Ren, Shoujie, Ye, X. Philip, Borole, Abhijeet P., Kim, Pyoungchung, & Labbé, Ncole. Analysis of switchgrass-derived bio-oil and associated aqueous phase generated in a semi-pilot scale auger pyrolyzer. United States. https://doi.org/10.1016/j.jaap.2016.03.013
Ren, Shoujie, Ye, X. Philip, Borole, Abhijeet P., Kim, Pyoungchung, and Labbé, Ncole. Wed .
"Analysis of switchgrass-derived bio-oil and associated aqueous phase generated in a semi-pilot scale auger pyrolyzer". United States. https://doi.org/10.1016/j.jaap.2016.03.013. https://www.osti.gov/servlets/purl/1311225.
@article{osti_1311225,
title = {Analysis of switchgrass-derived bio-oil and associated aqueous phase generated in a semi-pilot scale auger pyrolyzer},
author = {Ren, Shoujie and Ye, X. Philip and Borole, Abhijeet P. and Kim, Pyoungchung and Labbé, Ncole},
abstractNote = {To efficiently utilize water-soluble compounds in bio-oil and evaluate the potential effects of these compounds on processes such as microbial electrolysis, our study investigated the physico-chemical properties of bio-oil and the associated aqueous phase generated from switchgrass using a semi-pilot scale auger pyrolyzer. Combining separation and detection strategies with organic solvent extraction, an array of analytical instruments and methods were used to identify and quantify the chemical constituents. Separation of an aqueous phase from crude bio-oil was achieved by adding water (water: crude bio-oil at 4:1 in weight), which resulted in a partition of 61 wt.% of the organic compounds into a bio-oil aqueous phase (BOAP). GC/MS analysis for BOAP identified over 40 compounds of which 16 were quantified. Acetic acid, propionic acid, and levoglucosan are the major components in BOAP. In addition, a significant portion of chemicals that have the potential to be upgraded to hydrocarbon fuels were extracted to BOAP (77 wt.% of the alcohols, 61 wt.% of the furans, and 52 wt.% of the phenolic compounds in crude bio-oil). Valorization of the BOAP may require conversion methods capable of accommodating a very broad substrate specificity. Ultimately, a better separation strategy is needed to selectively remove the acidic and polar components from crude bio-oil to improve economic feasibility of biorefinery operations.},
doi = {10.1016/j.jaap.2016.03.013},
journal = {Journal of Analytical and Applied Pyrolysis},
number = C,
volume = 119,
place = {United States},
year = {Wed Mar 30 00:00:00 EDT 2016},
month = {Wed Mar 30 00:00:00 EDT 2016}
}
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