Numerical and statistical analysis of energy content of Shell-Fibre-EFB mixture 2

Tu, Frances Juan Yu (2008) Numerical and statistical analysis of energy content of Shell-Fibre-EFB mixture 2. Universiti Malaysia Sabah. (Unpublished)


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The palm oil mill generates a number of waste streams included solid residues, liquid effluent (POME) and gaseous emissions which are all have great potential energy resources. Fibre, shell and empty fruit bunches (EFB) is the main solid residues produced during the palm oil extraction process. This biomass can be used as solid fuel in steam boiler for electricity generation purpose. As a long term planning, process integrated pollution prevention and control strategy is needed for extraction of palm oil by improvement of production technology and utilization of palm oil residues in order to protect environment from pollution and generate revenue to our country. There are 2 methods to evaluate the energy content of solid wastes; experimental and prediction by semi-empirical models. The experiment is conducted by oxygen bomb calorimeter; whereas the semi-empirical models are based on the data from physical composition, proximate analysis and ultimate analysis which is the main part of this research. The energy content of wastes can be described in LHV, lower heating value and HHV, higher heating value. This research is carried out in order to evaluate the HHV of the Shell-Fibre-EFB at different percentages using different semi-empirical models. In this research, 12 semi-empirical models based on ultimate analysis were selected to be analysed; the elemental chemical compositions data were obtained from two oil palm mills. The elemental chemical compositions obtained are used as the data input to evaluate the HHV of Shell-Fibre-EFB at different percentages. Then ANOVA 1-way statistical analysis was applied to compare the results within the models and T -test analysis was applied to compare the result based on models with the actual HHV. The statistical analysis shows the best model is the Graboski and Bain because their difference with the actual HHV is statistically not significant for both mills. Steuer model and Mott & Spooner models are not suitable to be used for the HHV computation since they have statistically highly significant differences with the actual HHV for both mills; whereas the rest models are found suitable to be used for computation of HHV in Mill 1 but not suitable for Mill 2.

Item Type: Academic Exercise
Uncontrolled Keywords: empty fruit bunches, fibre, shell, palm oil, extraction process, biomass, lower heating value, oxygen bomb calorimeter
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: SCHOOL > School of Science and Technology
Date Deposited: 24 Jun 2014 01:22
Last Modified: 13 Oct 2017 02:46

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