Water Washing Pretreatment On Empty Fruit Bunches Of Oil Palm Waste
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Date
2011-10
Authors
Che Khalib, Nuridayanti
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
The water washing pretreatment on empty fruit bunches (EFB) of oil palm waste has
been investigated in this study, with the objective of removing some ash from the
EFB to improve the quality of biomass. This study also investigated the effectiveness
of water washing to remove ash by changing the appropriate parameters of the water
washing pretreatment such as residence time, amount of water, type of water and use
of soaking and stirring. Tap water and distilled water were solely used throughout the
work.
The original ash content for the unwashed EFB is 5.19 mf wt%. From this study, the
average ash content of the washed EFB by soaking the feedstock of size 1-3 cm in 3 l
of tap water for 5 min residence time at ambient temperature is found to be
2.95 mf wt%. It is found that the ash content less than about 3 mf wt% was
successfully achieved. It also showed that tap water is as effective as distilled water in
reducing ash in EFB. The electrical conductivity in waste liquor by soaking the
feedstock for 5 min at ambient temperature in 3 l of tap water was 991 μS/cm and it
was increased with the prolonged soaking time. The electrical conductivity in waste
liquor was found to increase due to the diffusion of mineral and inorganic materials
from biomass.
Description
Keywords
Water washing pretreatment on , empty fruit bunches of oil palm waste