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Hydrothermal treatment of oil palm wood: effect of treatment variables on dimensional stability using response surface methodology

Saliman, Muhammad Anuar Ridzuan and Ashaari, Zaidon and Bakar, Edi Suhaimi and Lee, Seng Hua and Md Tahir, Paridah and Abdul Halip, Juliana and Leemon, Nabil Fikri (2017) Hydrothermal treatment of oil palm wood: effect of treatment variables on dimensional stability using response surface methodology. Journal of Oil Palm Research, 29 (1). pp. 130-135. ISSN 15112780

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Abstract

Oil palm wood (OPW) extracted from felled oil palm trunks during replanting could be a source of replenishment for the depleted timber sources. Nevertheless, dimensional instability of OPW is one of the drawbacks that need to be addressed before it can be utilised efficiently. Therefore, to improve its dimensional stability, hydrothermal treatment using different buffered media was employed in this study and the optimal treatment condition for OPW were investigated. Response surface methodology (RSM) models for treatment temperature, treatment duration and buffered media of hydrothermally treated OPW were developed. OPW samples were hydrothermally treated with different buffered media (pH 4 to pH 9), treatment temperature (60ºC to 160ºC) and time (13 min to 147 min). Water absorption (WA) and thickness swelling (TS) of the treated samples were determined. It is demonstrated that hydrothermal treatment has improved the dimensional stability of treated samples with treatment temperature appearing to be the most influential factor. Samples treated in an acidic media displayed lower WA mainly due to the fact that higher amount of hydrophilic hemicellulose was degraded under acidic condition. However, lower TS was observed in the samples treated in alkaline media, probably caused by the removal of lignin that increased the porosity of the OPW.

Item Type: Article
Uncontrolled Keywords: Buffered media; central composite design; hydrothermal treatment; thickness swelling; water absorption
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 30 Sep 2019 03:24
Last Modified: 30 Sep 2019 03:24
URI: http://eprints.uthm.edu.my/id/eprint/11718
Statistic Details: View Download Statistic

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