Abstract
The pre-dehydration of a woody biomass waste (Douglas fir, DF) with 4.6–32 wt% of diluted sulfuric acid solutions was carried out mainly at room temperature aimed to improve the carbon yield from the thermal carbonization of pre-dehydrated biomass at 500 °C. By comparison (based on the raw DF), the pre-dehydration at room temperature increased the biochar yield and carbon retention up to about 32 wt% and 54%, respectively from that of about 22 wt% and 39% without pre-dehydration. When the pre-dehydration temperature increased to 90 °C, the biochar yield and carbon retention were sharply promoted to about 44 wt% and 76%, which was about two times higher than that of the biochar obtained without pre-treatment. This work for the first time proved the effectiveness of improving the carbon yield from lignocellulosic biomass via diluted sulfuric acid-assisted pre-dehydration at low or even room temperature.
Original language | English |
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Article number | 127251 |
Journal | Bioresource Technology |
Volume | 355 |
DOIs | |
State | Published - Jul 2022 |
Externally published | Yes |
Funding
This work is funded by the National Institute of Food and Agriculture (NIFA), United States Department of Agriculture (USDA) through the Agriculture and Food Research Initiative (AFRI) that is a leading competitive grants program (Grant no. 2016-67021-24533 and 2018-67009-27904). We would thank Jonathan Lomber and Kalidas Mainali for conducting the ultimate analysis in Analytical Chemistry Service Center (ACSC) at Washington State University. We are grateful for the help from Eric Vaught with the minerals analysis at the University of Arkansas. And we also acknowledge Dr. Valerie Lynch-Holm and Dr. Dan Mullendore in Franceschi Microscopy & Imaging Center (FMIC) at Washington State University involving the SEM in this work. We thank Ryan Lei for the English language editing. This work is funded by the National Institute of Food and Agriculture (NIFA), United States Department of Agriculture (USDA) through the Agriculture and Food Research Initiative (AFRI) that is a leading competitive grants program (Grant no. 2016-67021-24533 and 2018-67009-27904). We would thank Jonathan Lomber and Kalidas Mainali for conducting the ultimate analysis in Analytical Chemistry Service Center (ACSC) at Washington State University. We are grateful for the help from Eric Vaught with the minerals analysis at the University of Arkansas. And we also acknowledge Dr. Valerie Lynch-Holm and Dr. Dan Mullendore in Franceschi Microscopy & Imaging Center (FMIC) at Washington State University involving the SEM in this work. We thank Ryan Lei for the English language editing.
Funders | Funder number |
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AFRI | 2016-67021-24533, 2018-67009-27904 |
Agriculture and Food Research Initiative | |
U.S. Department of Agriculture | |
National Institute of Food and Agriculture | |
Washington State University |
Keywords
- Biochar
- Biomass
- Carbon recovery
- Carbonization
- Pre-dehydration