RESPONSE SURFACE METHODOLOGY MODEL OF HYDROTHERMAL TREATMENT PARAMETERS ON DECAY RESISTANCE OF OIL PALM WOOD

Wood from matured oil palm (Elaeis guineensis) trunks (OPT) or oil palm wood (OPW) is an ideal alternative material to substitute timber that is now experiencing depletion. As the world second largest producer of palm oil, there are 5.64 million ha of oil palm plantations in Malaysia, which accounts for 17% of the total land area of Malaysia (MPOB 2015). Oil palm trees are being replanted at the end of their economic lifespan, which is 25–30 years, generating an estimation of 7 million metric tons of felled OPT annually (Bakar et al. 2008). As a biomass waste, full utilisation of these felled OPT could be beneficial from environmental and socioeconomical aspects. Nevertheless, OPW is very susceptible to biological deterioration agents such as termites and fungi, despite having better radial and tangential stability than rubberwood. The biological durability of OPW is very low, classified as class 5 or perishable (Bakar et al. 2013). Therefore, treatment is needed to improve its biological durability. Heat treatment RESPONSE SURFACE METHODOLOGY MODEL OF HYDROTHERMAL TREATMENT PARAMETERS ON DECAY RESISTANCE OF OIL PALM WOOD

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