USE OF RESIDUES OF FORESTRY EXPLORATION OF Pinus taeda FOR PARTICLEBOARD MANUFACTURE

Abstract

-This study aimed to evaluate the quality of particleboards manufactured with forest exploitation waste from Pinus taeda. The material in the form of branches, tree tops, stumps and roots, was obtained from a forest plantation located in the Municipality of Mafra -SC. All the material was processed into wood chips for biomass and transported to the place of studies. The Pinus industrial particles were used as control and mixed with the waste in different proportions. The experimental plan consisted of the panels manufacture with 100% of each type of material and mixture of these com proportions of 75/25%, 50/50% and 25/75% with Pinus industrial particles, in addition to the mixture in equal parts, of the three types of materials. Experimental panels were manufactured with nominal density of 0.75 g/cm 3 , using the urea-formaldehyde resin, in the proportion of 8% of solids -dry weight basis of the particles. The panels were pressed with specific pressure of 4.0 MPa, temperature of 160°C and pressing time of 8 minutes. The results of the internal bond tests met the requirements of the standard EN 312, is indicative that there has been a proper bonding of these particles originating forest exploitation wastes. General evaluations of the physical and mechanical properties results of the experimental panels indicate the possibility of use of particles obtained from branches, tree tops, stumps and roots, mixed com the industrial Pinus particles, in proportion of, up to, 50%, for particleboard manufacture.Keywords: Pinus particles; Panels pressing; urea-formaldehyde resin. UTILIZAÇÃO DE RESÍDUOS DE EXPLORAÇÃO FLORESTAL DE Pinus taeda PARA PRODUÇÃO DE PAINÉIS AGLOMERADOSRESUMO -Esta pesquisa teve como objetivo avaliar a qualidade de painéis aglomerados produzidos com resíduos de exploração florestal de Pinus taeda. O material na forma de galhos e ponteiras e de tocos e raízes, foram obtidas de um plantio florestal localizado no Município de Mafra -SC. Todo o material foi transformado em cavacos para biomassa e transportados até o local de estudos. As partículas industriais de Pinus foram utilizadas como testemunha e em mistura com os resíduos em diferentes proporções. O plano experimental consistiu na produção de painéis com 100% de cada tipo de material e em mistura destes com proporções de 75/25%, 50/50% e 25/75% com partículas industriais de pinus, além da mistura em partes iguais dos três tipos de materiais. Foram produzidos painéis experimentais com densidade nominal de 0,75 g/cm 3 , utilizando a resina uréia-formaldeído na proporção de 8% de sólidos -base peso seco das partículas. Os painéis foram prensados com pressão específica de 4,0 MPa, temperatura de 160 ºC e tempo de prensagem de 8 minutos. Os resultados dos ensaios de tração perpendicular atenderam aos requisitos da norma E 312, sendo indicativo de que houve uma colagem adequada destas partículas provenientes de resíduos de exploração

Evaluation of laccase production by Ganoderma lucidum in submerged and solid‐state fermentation using different inducers

“…Therefore, there is a growing need for the reuse of this waste wood. While most of the studies have been using these wood residues for manufacturing wood-related products [14,15], their potential as inducers for laccase production should be investigated.…”

Use of Populus deltoides wood in the Production of MDP and HDP

“…The values of 3.14% of total extracts, 27.67% of lignin and 4.56 of pH obtained by Iwakiri et al (2017) and Pereira et al (2017) for Pinus spp. industrial particles are close to the average values found for Populus deltoides woods, demonstrating the potential of the species under study as a raw material for the particleboards production.…”

Mechanical properties of accelerated aging particleboards

“…The expansion of wood panel industries significantly increases the demand for raw materials, forcing the search for other ones. An alternative way found by several national and international researchers is the use of residual lignocellulosic materials from planted forests and agroindustry (ALVES et al, 2014;CASTRO et al, 2014;DINHANE et al, 2015;IWAKIRI et al, 2017;MACEDO et al, 2015;TRIANOSKI et al, 2015;WEBER;.…”