Browsing by Author "Nur Fatihah Zainuddin"

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    Microwave pyrolysis of waste ship lubricant using activated carbon in a sti reaction bed
    (Universiti Malaysia Terengganu, 2017-05) Nur Fatihah Zainuddin
    Waste ship lubricant contains high amounts of hydrocarbon and calorific value which has the potential to be converted into value-added products. In this study, a treatment of waste ship lubricant under microwave radiation was investigated using different types of microwave absorbers which are activated carbon, natural zeolite and aluminium oxide. Activated carbon showed the greatest yield of pyrolysis oil where the highest yield obtained is 66 wt.% compared to natural zeolite which is 34 wt.% and aluminium oxide is 23 wt.% at pyrolysis temperature of 600°C. The calorific value obtained using different absorbers are in the range of 43-47 MJ/kg, indicating high combustion energy can be achieved by microwave pyrolysis. The recovered pyrolysis oil showed the formation of light aliphatic and aromatic hydrocarbon that could potentially be used as a fuel. Activated carbon shows promising results in terms of heating rate profile, product yield and chemical composition with higher desired hydrocarbon compound.
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    Pyrolysis Recovery of Waste Shipping Oil Using Microwave Heating
    (Energies, 2016) Wan Adibah Wan Mahari; Nur Fatihah Zainuddin; Wan Mohd Norsani Wan Nik; Cheng Tung Chong; and Su Shiung Lam
    This study investigated the use of microwave pyrolysis as a recovery method for waste shipping oil. The influence of different process temperatures on the yield and composition of the pyrolysis products was investigated. The use of microwave heating provided a fast heating rate (40 _C/min) to heat the waste oil at 600 _C. The waste oil was pyrolyzed and decomposed to form products dominated by pyrolysis oil (up to 66 wt. %) and smaller amounts of pyrolysis gases (24 wt. %)and char residue (10 wt. %). The pyrolysis oil contained light C9–C30 hydrocarbons and was detectedto have a calorific value of 47–48 MJ/kg which is close to those traditional liquid fuels derived fromfossil fuel. The results show that microwave pyrolysis of waste shipping oil generated an oil product that could be used as a potential fuel.