Civil Engineering Department, University of Granada, Campus de Fuentenueva, 18071 Granada, Spain.
Waste Manag. 2013 Nov;33(11):2245-9. doi: 10.1016/j.wasman.2013.07.010. Epub 2013 Aug 2.
The heterogeneity of biomass makes it difficult if not impossible to make sweeping generalizations concerning thermochemical treatment systems and the optimal equipment to be used in them. Chemical differences in the structural components of the biomass (cellulose, hemicellulose, and lignin) have a direct impact on its chemical reactivity. The aim of this research was to study the influence of the organic components of the raw material from olive trees (leaves, pruning residues, and wood) in the combustion behavior of this biomass, as well as to find the component responsible for the higher ash content of olive leaves. Accordingly, the study used a thermogravimetric analyzer to monitor the different states and complex transitions that occurred in the biomass as the temperature varied. The decomposition rates of the different samples were analyzed in order to establish a link between each combustion phase and the composition of the raw materials. Two methods were used to determine the hemicellulose and cellulose contents of biomass from olive trees. Significant differences among the results obtained by the different methods were observed, as well as important variations regarding the chemical composition and consequently the thermal behavior of the raw materials tested.
生物质的异质性使得很难（甚至不可能）对热化学处理系统及其在其中使用的最佳设备做出全面的概括。生物质结构成分（纤维素、半纤维素和木质素）的化学差异对其化学反应性有直接影响。本研究的目的是研究橄榄树（叶子、修剪残余物和木材）的原料中的有机成分对这种生物质燃烧行为的影响，并找出导致橄榄叶灰分含量较高的成分。为此，研究使用热重分析仪监测生物质在温度变化时发生的不同状态和复杂转变。分析了不同样品的分解速率，以建立每个燃烧阶段与原料组成之间的联系。使用两种方法来确定来自橄榄树的生物质的半纤维素和纤维素含量。不同方法得到的结果存在显著差异，并且关于测试原料的化学成分以及因此热行为的重要变化。
