Journal of Oil Palm Research Vol. 29  March 2017 p.  130-135
DOI:

HYDROTHERMAL TREATMENT OF OIL PALM WOOD: EFFECT OF TREATMENT VARIABLES ON DIMENSIONAL STABILITY USING RESPONSE SURFACE METHODOLOGY

Author(s): MUHAMMAD ANUAR RIDZUAN SALIMAN*; ZAIDON ASHAARI*; EDI SUHAIMI BAKAR*; LEE SENG HUA*; PARIDAH MD TAHIR **; JULIANA ABDUL HALIP** and NABIL FIKRI LEEMON**

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.

Keywords: , , , ,

Author Information
* Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia. E-mail:


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