数字农科院2.0

The fate of organic compounds in organic waste during torrefaction and implications for its valorization

文献类型： 外文期刊

作者： Yi Hu;Rui Yang;Yiping Wu;Xuejiao Chen;Wei Lin;Hong Wang;Zhiyong Qi;Dongdong Zhang;Lin Ouyang

作者机构：

关键词： Environmental and agricultural application;Minor organic compounds in biomass;Organic compounds during torrefaction;Torrefied biomass

期刊名称： Environmental Pollution

ISSN： 0269-7491

年卷期： 2024 年 361 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Torrefaction is commonly used to improve biomass properties, applications, and economy. The characteristics and subsequent applications of torrefied biomass are largely contingent on the organic compounds in parent biomass and their evolution during torrefaction. Yet, the evolution of organic compounds in biomass particularly minor components (e.g., polyphenols) is far less investigated for torrefaction. To address such issues, a superheated steam (SHS) boosted torrefaction process at different temperatures (200, 250, and 300 °C) and residence times (15, 30, and 60 min) was performed on spent coffee ground (SCG), which is an emerging biowaste and is rich in various organic compounds. Results found that both temperature and residence time determine SHS torrefaction performance. SHS torrefaction could effectively remove volatile matters to upgrade SCG for solid fuel. The relatively high content of N and S in torrefied SCG may negatively affect fuel quality but may benefit its adsorption of environmental pollutants. SHS boosted torrefaction could facilitate cellulose and lipids degradation compared to conventional torrefaction. Efficient reduction/removal of labile carbon and ecotoxic chemicals (e.g., phenols and caffeine) in SCG was successfully achieved with SHS torrefaction. As a result, SHS-torrefied SCG with higher biostability and lower phytotoxicity was evaluated as soil amendments and additives to soilless growing substrate. Implications for subsequent application by revealing the evolution of organic compounds during SHS torrefaction were discussed. This study highlighted the potentiality of SHS torrefaction as a pretreatment of biomass for versatile applications.

分类号：

  • 相关文献
作者其他论文 更多>>