Journal of Oil Palm Research Vol. 13 No 2  2001 Dec p.  39-44

Refining of crude glycerine recovered from glycerol residue by simple vacuum distillation

Author(s): YONG, K.C*. ; OOI Tian Lye** ; DZULKEFLY, K*. ; WAN YUNUS, W.M.Z*. ; HAZIMAH Abu Hassan**

Glycerol residue obtained from the refining of glycerol in a palm kernel oil methyl ester plant is a schedule waste and can be processed to recover its glycerol. On average, 141.8 g (14.2%) distilled glycerine (97% purity) were recovered from 1 kg glycerol residue by a simple vacuum distillation at 120 ° C – 126 ° C and 4.0 x 10-1 – 4.0 x 10-2 mbar pressure. The pH for the distillation was kept <5 in order to avoid foaming. The characteristics of the distilled glycerine were: 96.6% glycerol, 0.03% ash, 1% water (Karl Fischer method), 2.4% matter organic non-glycerol (MONG) and pH 3.5

Keywords: , , ,

Author Information
* Department of Chemistry, Faculty of Science and Environmental Studies, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

** Malaysian Palm Oil Board, P.O. Box 10620, 50720 Kuala Lumpur, Malaysia.

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