Chemical and energetic characterization for utilization of thinning and slab wood from Australian red cedar

• Autor(a) principal: Bufalino, Lina
• Data de Publicação: 2012
• Outros Autores: Protásio, Thiago de Paula, Couto, Allan Motta, Nassur, Otávio Augusto Carvalho, de Sá, Vânia Aparecida, Trugilho, Paulo Fernando, Mendes, Lourival Marin
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/356
• topic: Extrativos totais; Resíduos sólidos; Painéis reconstituídos; Poder calorífico; Toona ciliata; Total extractives; Solid wastes; Reconstituted panels; Higher heating value; Toona ciliata

This work aimed to quantify and compare chemical and energetic properties of Australian red cedar Toona ciliata MJ Roem var. australis (FV Muell.) C. DC wood from thinning and primary sawing for reconstituted panel and energy production; and also to verify the efficiency of extractive removal by water treatments, in order to improve wood quality for particleboard production. Lignin, holocellulose, extractives, ash, carbon, hydrogen, oxygen, nitrogen and sulfur contents and higher heating value were determined. Two water treatments for extractive removal were performed: immersion in cold water for 24 hours and immersion in boiling water for 2 hours. Lower values of ash, holocellulose, hydrogen and nitrogen contents and higher contents of lignin, total extractives, hydrogen and nitrogen contents were found for wood from primary sawing residues. For other properties, the values were significantly equal. Australian red cedar wood presents high extractive content, being water pre-treatment necessary for the production of some particleboards. Higher heating values of materials indicate potential for energy production.doi: 10.4336/2012.pfb.32.70.13