The majority of the Mozambican population use charcoal from natural forests to satisfy their domestic energy needs. Nevertheless, few studies have been done aiming at assessing the quality of wood used for charcoal production and its relationship with the sustainable use of natural forests. Most of the studies on charcoal production and marketing in Mozambique are aimed at understanding its contribution to the well-being of local communities, poverty alleviation and deforestation. Therefore, the objective of this study was to evaluate the qualitative and quantitative effects of lignin on the thermal degradation of wood, gravimetric yield and the quality of charcoal produced from five species of Miombo woodlands in northern Mozambique, namely B. boehmi, B. spciformis, J. globiflora, P. curatellifolia and U. kirkiana. Total lignin, its units syringyl (S), guaiacyl (G) and their ratio (S/G) were determined after thermogravimetric analysis. Gravimetric yields of charcoal, proximate analysis, heating value and apparent relative density were determined after the carbonization of wood samples at a final temperature of 450 °C. The values of G and S units ranged from 0.78 to 0.60 mmol. L⁻¹ and 0.60 to 0.78 mmol. L⁻¹, respectively, while the S/G ratio varied between 0.35 and 1.24. High lignin content and low S/G ratio influenced the thermal stability of wood and increased the charcoal yield, while S units positively influenced the quality of charcoal. J. globiflora and Uapaca kirkiana are the most recommended species for energy production in Mozambique.

莫桑比克大多数人口使用天然林木炭满足其国内能源需求。然而，很少有研究旨在评估用于生产木炭的木材的质量及其与天然林可持续利用的关系。莫桑比克关于木炭生产和销售的大多数研究旨在了解其对当地社区的福祉，减轻贫困和森林砍伐的贡献。因此，本研究的目的是评估木质素对莫桑比克北部米翁布林地的五个物种密歇根州B. boehmi，B。spciformis的木材热降解，重量产率和生产的木炭质量的定性和定量影响。 ，J。globiflora，P。curatellifolia和kirkiana。在热重分析之后确定总的木质素，其单位丁香基（S），愈创木脂基（G）及其比率（S / G）。在最终温度为450°C的木材样品碳化后，确定了木炭的重量产率，最近的分析结果，热值和表观相对密度。G和S单元的值在0.78至0.60mmol的范围内。L ^-1和0.60至0.78mmol。L ^-1，而S / G比在0.35和1.24之间变化。木质素含量高和S / G比低影响木材的热稳定性并提高木炭产量，而S单位对木炭质量产生积极影响。J. globiflora和Uapaca kirkiana 是莫桑比克最推荐的能源生产物种。