Eficiência do bio-óleo e extrato ácido provenientes da carbonização como preservativo de madeira

Abstract

The carbonization process is the production of charcoal. During the burning of wood there is production waste (bio-oil and acid extract), which have great economic importance in the energy scenario as an alternative form of energy production. This study aimed to evaluate the bio-oil efficiency and acid extract from the carbonization as a wood preservative, in addition to the energy use of bio-oil. Therefore, we used samples of 2 x 2 x 10 cm, Eucalyptus urograndis (Eucalyptus), Swietenia macrophylla (Mahogany), Ochroma pyramidal (Pau-de-ferry), Bagassa guianensis (Tatajuba) and Tectona grandis (teak) for testing biodegradation by termites Nasutitermes sp. The samples were subjected to treatment with bio-oil and the acid extract and 5 minutes to 24 hours immersion. The chemical determination of the bio-oil from wood samples were carried out in accordance with current NBRS. After the test period termites, the samples were removed, dried and the data were analyzed preservative material in the wood charge retention and mass loss. Data were statistically analyzed by SPSS and Statistica programs, repspectivamente the Tukey test 5% and Mann-Whitney the 5% significance level. The bio-oil was presented as an alternative energy source for external combustion engines and the preservative material that showed no termite attack Nasutitermes sp. bio-oil is due to its high rate of retention of the material. The timber species that showed no termite attack were tatajuba (Bagassa guianensis) and teak (Tectona grandis).