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Erschienen in: European Journal of Wood and Wood Products 2/2023

08.10.2022 | Original Article

The volatile organic compounds release from acid-alkali pretreated moso bamboo during heat treatment

verfasst von: Jingjing Gao, Jing Qian, Yajing Li, Luxi He, Zhengbin He, Songlin Yi

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 2/2023

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Abstract

The volatile organic compounds (VOCs) emitted during the heat treatment of bamboo will seriously affect the environmental quality and pose a potential threat to human health. In order to research the effect of high concentration acid- alkali solution pretreatment on VOCs release during bamboo heat treatment, the VOCs content and composition changes of sodium hydroxide and zinc chloride pretreated bamboo during heat treatment were detected by thermogravimetric Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry. The results showed that compared with the control group, sodium hydroxide pretreatment had little effect on the CO2 content during bamboo heat treatment, but had significant effect on the CH3COOH and CH4 content, which almost disappeared, and the activation energy was reduced to 71.25 kJ/mol. The pretreatment of zinc chloride had little effect on gaseous substances produced during bamboo heat treatment, but the content of CO2 decreased significantly, the CO disappeared, and the activation energy decreased to 102.65 kJ/mol. The total relative content of aldehydes was higher in the VOCs released by the control group. In the sodium hydroxide group, the relative content of alcohols was the highest, accounting for 31.01%, followed by phenols. The relative content of aldehydes decreased significantly, only 2.89%, which effectively reduced the influence of aldehydes. The VOCs released by the zinc chloride heat treatment group were mainly aldehydes, and the total relative content reached 71.54%, among which the furfural content was 63.60%, which was conducive to the specific recovery treatment.

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Metadaten
Titel
The volatile organic compounds release from acid-alkali pretreated moso bamboo during heat treatment
verfasst von
Jingjing Gao
Jing Qian
Yajing Li
Luxi He
Zhengbin He
Songlin Yi
Publikationsdatum
08.10.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Wood and Wood Products / Ausgabe 2/2023
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI
https://doi.org/10.1007/s00107-022-01879-3

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