期刊
BIOMASS CONVERSION AND BIOREFINERY
卷 11, 期 5, 页码 1611-1619出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13399-019-00578-z
关键词
Tobacco waste; Aroma compounds; Fast pyrolysis; Optimization
资金
- program of Study of destructive distillation of tobacco and its application in novel tobacco products [ZJZY2016C001]
- China Tobacco Zhejiang Industrial Company Limited
The study focused on converting tobacco waste into high value-added products through fast pyrolysis, with TF, TS, and MT used as raw materials. The bio-oil yield was found to be TS > MT > TF under the same pyrolysis temperature of 350 degrees C. Different separation methods for bio-oils resulted in different types of aroma compounds, with some compounds requiring specific separation methods.
As tobacco waste production from tobacco industry increases, it becomes important to convert tobacco waste into high value-added products. In this paper, the production of aroma compounds from the fast pyrolysis of tobacco waste was investigated, two kinds of tobacco waste-tobacco leaf fragments (TF), tobacco stems (TS)-and Modeng-brand cigarette tobacco (MT) were used as raw materials in a fluidized bed pyrolysis reactor. Tobacco types, pyrolysis temperatures, and bio-oil separation methods were assigned as influence factors, and the type and content of bio-oil-containing aroma compounds were defined as evaluation standards. Our results indicate that (i) the bio-oil yield under the same pyrolysis temperature (350 degrees C) is TS > MT > TF; (ii) when TF and MT are used as raw materials, low-temperature (about 350 degrees C) pyrolysis is beneficial for the production of aroma compounds, whereas TS requires higher temperature (more than 380 degrees C) pyrolysis; and (iii) bio-oils obtained from different separation methods contain different kinds of aroma compounds, with some compounds requiring certain separation methods. The formation and pyrolysis mechanism of nitrogen (N)-containing compounds in tobacco was also studied. The study demonstrated that nicotine converts to N-containing heterocycles because of secondary decomposition under high temperature. Graphical abstract
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