Improvement of the carbon yield from biomass carbonization through sulfuric acid pre-dehydration at room temperature

Chenxi Wang, Rongge Zou, Moriko Qian, Xiao Kong, Erguang Huo, Xiaona Lin, Lu Wang, Xuesong Zhang, Roger Ruan, Hanwu Lei

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

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 languageEnglish (US)
Article number127251
JournalBioresource Technology
Volume355
DOIs
StatePublished - Jul 2022

Bibliographical note

Funding Information:
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.

Funding Information:
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.

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Biochar
  • Biomass
  • Carbon recovery
  • Carbonization
  • Pre-dehydration

PubMed: MeSH publication types

  • Journal Article

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