Produção De Biomassa E Propriedades Energéticas Do Eucalyptus Benthamii Maiden Et Cambage

Technical Feasibility Study of Orange Wood Residues (Citrus sinensis) for Bioenergy Generation

“…[9] used pruning residues from orange tree branches and obtained 3.34% of ash. In addition, these values for the two compositions are in accordance with those found in studies with some species of eucalyptus, which is the biomass most used in energy use, obtaining values in the range of 0.68-2.82% of ash in [22,75], although contents below these were found, more precisely between 0.35 and 0.50% in the studies of [58,76]. Intermediate values are found in several biomasses, as found in the studies of [59], who obtained 1.44% using açai seeds, and [55], who found a content of 1.42% using sugarcane bagasse.…”

“…100B presented the lowest value, at 66.16%. The contents obtained for 100T and 90T10B are in accordance with the literature [55,56,[58][59][60] for residues of different biomass, such as Eucalyptus sp. sawdust, Pinus sp.…”

“…However, it is important to be aware that if biomass is used as an energy source in which there is a mixture of substrates with different calorific values, useful heat loss may occur. The UHV found in 100B can be considered as expected, since this composition was the one that presented a high ash content and extractives, in addition to lower levels of lignin and holocellulose, factors that directly influence the energy value of the material [50,58,77,89]. The data obtained in this study for the compositions containing the trunk of the orange tree are potential sources of energy use in relation to various biomasses, as indicated in the works of [39], who found HHV values in the range of 17.35-19.39 MJ.kg −1 using ten different types of biomass, as well as in [59], who obtained the HHV of 19.6 MJ.kg −1 using açaí seeds, [55], who, using sugarcane bagasse, obtained 18.5 MJ.kg −1 , and [90], who obtained 18.2 MJ.kg −1 , in addition to higher values as in [87], who, using canjiqueira and cambará, obtained 20.07 and 19.54 MJ.kg −1 , respectively.…”

“…As for the ash content, in the material 100T, it was 1.11%, and in 90T10B, it was 1.69%, demonstrating that there was no significant influence of the 10% of the bark. The highest value obtained was in 100B, at 9.33%; this value is high and expected for bark [39,50,58]. Ash has a very complex nature, and in cases of high contents, biomass is not desirable in terms of bioenergy.…”

“…Lower values than the present study were obtained by [66,67], which found 14.0 and 13.3% for residues of banana leaf and rice husk, respectively. FC directly influences the values of calorific value [55,62], although in some cases this relationship may not occur, according to age [68] and separate parts of the tree (wood, branch and bark), as found by [58], which obtained an inverse relation comparing the analyzed parts. In addition, the FC content can be influenced by the way the biomass to be used is found, because impurities contained in the biomass can compromise the FC values [36].…”