 Preparation of low-nitrogen bio-oil from co-pyrolysis of waste tobacco stem and corn stalk: Product characteristics and denitrogenation mechanismJing Bai, Guilin Huang, Chenxu Qiu, Xutao Shang, Zihui Sun, Junhao Hu and Chun Chang Energy, 2024, vol. 301, issue C Abstract: Substances such as nicotine and tobacco proteins in waste tobacco stem (TS) could result in higher content of nitrogenous compounds and lower calorific value and cleanness in the pyrolysis bio-oil. This study focused on the co-pyrolysis of TS with corn stalk (CS) to investigate the product characteristics and denitrogenation effects during the co-pyrolysis process. The results indicated that co-pyrolysis of TS with CS remarkably reduced nitrogenous compounds from 43.75 % to 6.42 % in bio-oil, at a 1:1 blending ratio of TS and CS. With the addition of CS, the most of nitrogen-containing and oxygen-containing compounds were removed from bio-oil. Co-pyrolysis of TS with three main components in biomass was also conducted. It revealed that the lignin component in the CS played a key role in bio-oil denitrogenation during co-pyrolysis. When the blending ratio of TS and lignin was 1:1, 39.45 % of nitrogenous compounds in the bio-oil was reduced. Lignin promoted the amino migrates from bio-oil to gas and char. Keywords: Tobacco stem; Corn stalk; Co-pyrolysis; Bio-oil; Denitrogenation mechanism (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:301:y:2024:i:c:s0360544224014269 DOI: 10.1016/j.energy.2024.131653 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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