Abstract：
This work conducted experimental combustion on a closed chamber using two different materials: mixture (1:1) sugarcane bagasse/straw and pre-treated biomass. The sampling method was an Andersen cascade impactor with eight stages. Tests were carried out on untreated biomass varying the velocities observed in the sampling duct (4.18; 5.20, 6.85, and 8.21 m.s-1). Pre-treated biomass tests were performed at 4.19 m.s-1 because in this condition there is a higher speed stability inside the duct. During the combustion tests, the concentration of emitted particles was higher for the lower speed range, with an order of 4.19 > 5.40 > 6.85 > 8.21 m.s-1. The higher speeds observed inside the duct behaved as a dragging agent for particulate material. For the tests at the speed of 8.21 m.s-1 where the flow inside the duct was 0.088 m3s-1, this behavior is more evident. Considering the fine diameter particles (< 2.5 µm), they were emitted in a higher concentration, due to the biomass combustion process, which results in higher emission of ultrafine particles. The emission factors (EFs) obtained for PM10 for untreated biomass were in the range of 0.414 and 0.840. On the other hand, considering the pre-treated biomass, these factors were 0.70 and 1.51. The EFs of PM from the burning of the pre-treated biomass were higher when compared to untreated biomass, which is mainly due to the higher temperature of the process due to the higher HHV (higher heating value) of this material, caused by the removal of hemicellulose (4.71 times) and a proportional increase in lignin (1.52 times). Biomass combustion has the potential to partially replace fossil fuels in heat and energy generation. Nevertheless, more stringent and comprehensive legislation should be established to ensure that air quality is maintained. Furthermore, the emission factors obtained in this study might be useful as input data for air quality modeling in the context of sugarcane\'s burning biomass, thus, contributing to the generation of inventories that include emissions of this nature.
摘要：
这项工作使用两种不同的材料在密闭室中进行了实验燃烧：甘蔗渣/秸秆混合物（1：1）和预处理的生物质。采样方法是具有八个阶段的Andersen级联冲击器。对未经处理的生物质进行了测试，改变了采样导管中观察到的速度（4.18;5.20、6.85和8.21m。s-1).在4.19m处进行预处理的生物量测试。s-1，因为在这种情况下，管道内部具有更高的速度稳定性。在燃烧试验期间,在较低的速度范围内，发射粒子的浓度较高，顺序为4.19>5.40>6.85>8.21m。s-1.在管道内观察到的较高速度表现为颗粒材料的拖曳剂。对于速度为8.21m的试验。当管道内的流量为0.088m3s-1时,这种行为更明显。考虑到细直径颗粒（<2.5µm），它们以更高的浓度排放，由于生物质燃烧过程，这导致超细颗粒的更高排放。对于未处理的生物质，PM10获得的排放因子（EF）在0.414和0.840的范围内。另一方面,考虑到预处理的生物质，这些因素分别为0.70和1.51。与未经处理的生物质相比，燃烧预处理的生物质产生的PM的EF更高。这主要是由于该材料具有较高的HHV（较高的热值），由半纤维素的去除（4.71倍）和木质素的成比例增加（1.52倍）引起。生物质燃烧有可能部分替代化石燃料产生热能和能源。然而，应建立更严格和全面的立法，以确保维持空气质量。此外，在这项研究中获得的排放因子可能是有用的输入数据的空气质量建模在甘蔗的燃烧生物质的背景下，因此，有助于产生包括这种性质排放的清单。
