Abstract
Problem Statement: The palm oil industry generates an abundance of oil palm biomass such as the mesocarp fibre, shell, empty fruit bunch (EFB), frond, trunk and palm oil mill effluent (POME). For 80 million tonnes of fresh fruit bunch (FFB) processed last year, the amount of oil palm biomass was more than 25 million tones. The objectives of this study were to: (i) Determine the effect of various pyrolysis parameters on product yields and (ii) Characterise liquid product obtained under different condition. Approach: In this study, pyrolysis of oil palm Empty Fruit Bunches (EFB) was investigated using quartz fluidized fixed bed reactor. The effects of pyrolysis temperatures, particle sizes and heating rates on the yield of the products were investigated. The temperature of pyrolysis and heating rate were varied in the range 300-700 °C and 10-100 °C min 1 respectively. The particle size was varied in the range of <90, 91-106, 107-125 and 126-250 µm. The elemental analysis and calorific value of the bio-oil were determined. The chemical composition of the oil was investigated using chromatographic and spectroscopic techniques. Results: Under the experimental conditions, the maximum bio-oil yield was 42.28% obtained at 500 oC, with a heating rate of 100 oC min -1 and particle size of 91-106 µm. The calorific values of bio-oil ranged from 20-21 MJ kg -1 . A great range of functional groups of phenol, alcohols, ketones, aldehydes and carboxylic acids were indicated in FTIR spectrum. Conclusion: The chemical characterisation results showed that the bio-oil obtained from oil palm EFB maybe a potentially valuable source as fuel or chemical feedstocks.
Highlights
Oil palm (Elaeis guineensis) was introduced in Peninsular Malaysia in 1870 and was commercially exploited in the 1900s
Raw material: Empty fruit bunches a by-product of a palm oil mill were used in the work
The calorific value of empty fruit bunches was 17.08 MJ kg−1 generally which is typical for biomass is higher than the energy content of olive-oil residue 16.40 MJ kg−1[20]
Summary
Oil palm (Elaeis guineensis) was introduced in Peninsular Malaysia in 1870 and was commercially exploited in the 1900s. Renewable energy source that could dramatically improve the environment, economy and energy security. The use of these materials will depend on safe state of the art, economic and technologies that are used to transform them into manageable products[17]. As fossil fuel gets depleted, exploitation of biomass as renewable materials by conversion to a transportable form of green fuel is being fervently researched. These include pyrolysis[20,23], gasification[6,24] and liquefaction[2, 21]. Ozcimen et al.[14] pyrolysed rapeseed cake for bio-oil and bio-char and identified the various characteristics of bio-oil and bio-char acquired under static atmospheric conditions
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