Effects of torrefaction and densification on switchgrass pyrolysis products
Abstract
Abstract The pyrolysis behaviors of four types of pretreated switchgrass (torrefied at 230 and 270 °C, densification, and torrefaction at 270 ºC followed by densification) were studied at three temperatures (500, 600, 700 ºC) using a pyroprobe attached to a gas chromatogram mass spectroscopy (Py-GC/MS). The torrefaction of switchgrass improved its oxygen to carbon ratio and energy content. Contents of anhydrous sugars and phenols in pyrolysis products of torrefied switchgrass were higher than those in pyrolysis products of raw switchgrass. As the torrefaction temperature increased from 230 to 270 °C, the contents of anhydrous sugars and phenols in pyrolysis products increased whereas content of guaiacols decreased. High pyrolysis temperature (600 and 700 °C as compared to 500 °C) enhanced decomposition of lignin and anhydrous sugars, leading to increase in phenols, aromatics and furans. Densification enhanced depolymerization of cellulose and hemicellulose during pyrolysis.
- Authors:
-
- Oklahoma State Univ., Stillwater, OK (United States) Dept. of Biosystems and Agricultural Engineering
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Publication Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1162227
- Report Number(s):
- INL/JOU-14-33542
Journal ID: ISSN 0960-8524; PII: S0960852414014539
- Grant/Contract Number:
- EPS-0814361
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Bioresource Technology
- Additional Journal Information:
- Journal Volume: 174; Journal Issue: C; Journal ID: ISSN 0960-8524
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS
Citation Formats
Yang, Zixu, Sarkar, Madhura, Kumar, Ajay, Tumuluru, Jaya Shankar, and Huhnke, Raymond L. Effects of torrefaction and densification on switchgrass pyrolysis products. United States: N. p., 2014.
Web. doi:10.1016/j.biortech.2014.10.032.
Yang, Zixu, Sarkar, Madhura, Kumar, Ajay, Tumuluru, Jaya Shankar, & Huhnke, Raymond L. Effects of torrefaction and densification on switchgrass pyrolysis products. United States. https://doi.org/10.1016/j.biortech.2014.10.032
Yang, Zixu, Sarkar, Madhura, Kumar, Ajay, Tumuluru, Jaya Shankar, and Huhnke, Raymond L. Mon .
"Effects of torrefaction and densification on switchgrass pyrolysis products". United States. https://doi.org/10.1016/j.biortech.2014.10.032. https://www.osti.gov/servlets/purl/1162227.
@article{osti_1162227,
title = {Effects of torrefaction and densification on switchgrass pyrolysis products},
author = {Yang, Zixu and Sarkar, Madhura and Kumar, Ajay and Tumuluru, Jaya Shankar and Huhnke, Raymond L.},
abstractNote = {Abstract The pyrolysis behaviors of four types of pretreated switchgrass (torrefied at 230 and 270 °C, densification, and torrefaction at 270 ºC followed by densification) were studied at three temperatures (500, 600, 700 ºC) using a pyroprobe attached to a gas chromatogram mass spectroscopy (Py-GC/MS). The torrefaction of switchgrass improved its oxygen to carbon ratio and energy content. Contents of anhydrous sugars and phenols in pyrolysis products of torrefied switchgrass were higher than those in pyrolysis products of raw switchgrass. As the torrefaction temperature increased from 230 to 270 °C, the contents of anhydrous sugars and phenols in pyrolysis products increased whereas content of guaiacols decreased. High pyrolysis temperature (600 and 700 °C as compared to 500 °C) enhanced decomposition of lignin and anhydrous sugars, leading to increase in phenols, aromatics and furans. Densification enhanced depolymerization of cellulose and hemicellulose during pyrolysis.},
doi = {10.1016/j.biortech.2014.10.032},
journal = {Bioresource Technology},
number = C,
volume = 174,
place = {United States},
year = {Mon Dec 01 00:00:00 EST 2014},
month = {Mon Dec 01 00:00:00 EST 2014}
}
Web of Science
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