Browsing by Author "Adewoye, L. T"

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    Computer aided simulation of the pyrolysis of waste lubricating oil using Aspen Hysys.
    (Journal of Environmental Research, Engineering and Management, 2018-02-01) Adeniyi, A. G.; Adewoye, L. T; Ighalo, Joshua O.
    The pyrolysis of waste lubricating oil is an exciting technique of converting waste materials into useful products by thermal decomposition at elevated temperature under inert conditions. Aspen HYSYS 2006 was used to develop a computational steady-state model to simulate the pyrolysis of waste lubricating oil and analyze its performance. The Peng-Robinson fluid package was used for the simulation. The pyrolysis reaction was modeled by a combination of the yield-shift reactor and the Gibbs reactor. At a pyrolysis temperature of 3500C and atmospheric pressure, 77.92% liquid yield was obtained. The product composition and chemical properties of the pyrolysis oil were also predicted by the simulation and are in good agreement with experimental results. This has proved that pyrolysis of Waste lubricating oil can give a very good yield of liquid product and is a viable recycling technique.
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    Process Optimisation and characterization of fragrance suited mechanically expressed Nigerian Lime seed oil
    (Nigerian Journal of Technology (NIJOTECH), 2018-04-01) Adeniyi, A. G.; Adewoye, L. T; ELETTA, O. A. A.; Ogunleye, O. O.; Olukotun, K
    This study determined the optimal process parameters for the extraction of Lime (Citrus aurantifolia) Seed Oil (LSO) for fragrance production. A Box Behnken Design (BBD) of Response Surface Methodology (RSM) was used to design the LSO extraction using hydraulic press. The effect of various combinations of temperature, heating time and pressing time on oil yield, specific gravity, acid value, saponification value, FFA, Iodine and peroxide values were investigated. The oil produced was analysed using Gas Chromatography – Mass Spectrophotometer (GC-MS). The R2 -values of models ranged between 0.998 and 0.999 and adjusted R2 between 0.994 and 0.998. A maximum of 29.21 % of LSO yield was obtained with specific gravity (0.861), acid value (2.86 mg KOH/g); saponification value (185.3 mg KOH/g), FFA (≤ 1.43 %), Iodine value (107.8 g I2/100 g) and peroxide value (15meq/kg) at the optimal process parameters of 83oC, 8 min and 7 min temperature heating and pressing time respectively. The physico-chemical analysis of the lime seed oil indicated that the oil could be used for fragrance.