Qualidade dos resíduos madeireiros de mogno-africano e eucalipto para briquetagem

Ciencia Florestal

article

Camilla de Oliveira Souza¹  Marina Donária Chaves Arantes²  Joyce de Almeida Pinto³  João Gabriel Missia da Silva¹  Márcia Fernanda Carneiro³  Ana Carla Bezerra de Lima³  Renato Ribeiro Passos¹ 

[1] Universidade Federal do Espírito Santo;Universidade Federal de São João del-Rei;Pesquisadora Autônoma

关键词: Energetic potential;    Briquettes;    Khaya sp.;    Eucalyptus sp.;   

DOI  :  10.5902/1980509843299

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Pesquisas Florestais

【 摘 要 】

The residues from wood processing are an opportunity for energy use, and the briquetting is an efficient process of concentrating the available energy from forest biomass. Therefore, this work aimed to evaluate different compositions of residues from African mahogany (Khaya ivorensis and Khaya senegalensis) and eucalypts (Eucalyptus grandis x Eucalyptus urophylla) woods for the production of briquettes. To do so, five composites were tested with different proportions of residues (100% eucalypts, 75% eucalypts + 25% African mahogany, 50% eucalypts + 50% African mahogany, 25% eucalypts + 75% African mahogany e 100% African mahogany) and submitted to analysis chemical and physical (total extracts, total lignin, ash content, moisture content, higher calorific value and bulk density). The briquettes were produced at a temperature of 120°C, pressure of 100 kgf cm-2 and compaction and cooling times of 5 and 7 minutes, respectively and were submitted to physical-mechanical analysis (apparent relative density and resistance to axial compression). The compositions with the highest percentage of African mahogany had higher extractives and ash content, and a greater calorific value. For the briquettes from compositions with higher percentages of eucalyptus, there was less apparent relative density and less resistance to axial compression. Despite this, the residues of these species have potential for energy generation. However, the briquettes with a higher percentage of African mahogany in the composition have greater energy potential and are, mechanically, more resistant.

【 授权许可】

CC BY-NC