会议名称：“2024世界木材日”研讨会暨第六届国际林联（IUFRO）林产品文化研究组讨论会
会议时间：2024年3月21-22日

报告嘉宾： Febrina Dellarose Boer博士
嘉宾单位：法国巴黎高科农业学院AgroParisTech

报告摘要：

The slow pyrolysis method offers a sustainable way to convert residual agricultural biomass into energy-dense biochar along with its by-product, pyrolysis liquid, for diverse applications. Due to its high concentration of bioactive chemicals, pyrolysis liquid has gained interest, including its potential as a wood protectant. This study aims to evaluate the efficacy of slow pyrolysis liquid from sugarcane bagasse for wood protection against fungi and termites, as well as its water-leaching properties. Pyrolysis liquid was obtained from slow pyrolysis of sugarcane bagasse at 500 °C temperature, 10°C/min heating rate, and 60 min of holding time. Samples of beech and pine wood were impregnated with pyrolysis liquid using different concentrations and dried at different drying temperatures. Results showed that higher drying temperature (103 °C) resulted in agglomeration of pyrolysis liquid inside wood cells and lower the leaching rate. Nonetheless, no chemical reaction was observed in FTIR tests. The pyrolysis liquid effectively repelled termites and act as a toxic agent at a 25% concentration, while higher concentrations (50% and 100%) were needed to protect against certain types of Basidiomycete fungi (Coniophora puteana and Rhodonia placenta, cubic rots and Trametes versicolor, a fibrous rot). However, the pyrolysis liquid remained leachable when exposed to water and high humidity, in which 3-methyl-1,2-cyclopentanedione, 2,6-dimethoxyphenol, and phenol were found to be the most significant compounds that leached from all the treated wood. Further study is worth carrying out, particularly in investigating the formulation strategies to improve fixation for extended efficacythrough-life and minimize the impacts on human health and the environment. 
 

关键字： biomass, fungi, leaching, pyrolysis liquid, sugarcane bagasse, slow pyrolysis, wood protection, termites

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