Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China.
Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
Environ Sci Pollut Res Int. 2024 Jun;31(29):42372-42387. doi: 10.1007/s11356-024-33892-9. Epub 2024 Jun 14.
Globally, the circular efficiency of biomass resources has become a priority due to the depletion and negative environmental impacts of fossil fuels. This study aimed to quantify the atmosphere-dependent combustion of Ganoderma lucidum (GL) biomass and its thermodynamic and kinetic parameters toward enhancing its circularity and transformability characteristics. The GL combustion occurred in the three stages of moisture removal, volatile release, and coke combustion. Combustion performance characteristics were more favorable in the N/O atmosphere than in the CO/O atmosphere under the same heating rates. The rising heating rate facilitated the release of volatiles. According to the model-free methods of Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose, the activation energies essential for the primary reaction were 283.09 kJ/mol and 288.28 kJ/mol in the N/O atmosphere and 233.09 kJ/mol and 235.64 kJ/mol in the CO/O atmosphere. The gaseous products of the GL combustion included CH, HO, C = O, CO, CO, NH, C = C, and C-O(H). Ash prepared in both atmospheres exhibited a tendency for slag formation, with oxy-fuel combustion lowering its risk. This study thus provides a theoretical and practical basis for transforming GL residues into a sustainable energy source.
由于化石燃料的枯竭和对环境的负面影响，全球范围内生物质资源的循环效率已成为当务之急。本研究旨在量化灵芝（GL）生物质的大气依赖性燃烧及其热力学和动力学参数，以提高其循环性和可转化性特征。GL 燃烧发生在水分去除、挥发物释放和焦炭燃烧三个阶段。在相同的升温速率下，N/O 气氛中的燃烧性能特征优于 CO/O 气氛。升温速率的升高有利于挥发物的释放。根据 Ozawa-Flynn-Wall 和 Kissinger-Akahira-Sunose 无模型方法，N/O 气氛中主要反应所需的活化能为 283.09 kJ/mol 和 288.28 kJ/mol，CO/O 气氛中为 233.09 kJ/mol 和 235.64 kJ/mol。GL 燃烧的气态产物包括 CH、HO、C=O、CO、CO、NH、C=C 和 C-O(H)。在两种气氛下制备的灰分都表现出形成炉渣的趋势，富氧燃烧降低了其风险。因此，本研究为将 GL 残渣转化为可持续能源提供了理论和实践基础。
