Browsing by Author "Ajala, Elijah Olawale"

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    HETEROGENEOUS CATALYSIS USING BENTONITE-SUPPORTED Fe-Co-Ni TRIMETALLIC NANOPARTICLES
    (Alma Mater Publishing House "Vasile Alecsandri" University of Bacau, 2021) Aderibigbe, Fatai Alade; Adewoye, Tunmise Latifat; Mustapha, Sherif Ishola; Muhammed, Alhassan Ishaq; Saka, Harvis Bamidele; Ajala, Elijah Olawale; Oluwaseyi, Soile Samuel
    Abstract: Herein, the synthesis and characterization of a bentonite-supported Fe-Co-Ni trimetallic nanocatalyst applied in transesterification reaction was reported. The synthesized heterogeneous catalyst was used to investigate the production of biodiesel by varying the reaction parameters using Box-Behnken design response surface methodology (RSM-BBD). An optimum biodiesel yield of 95.2 % was obtained at methanol to oil ratio of 10:1, reaction time of 2 hours, reaction temperature of 55 ℃ and catalyst concentration of 5 % (w/w of the oil). The biodiesel produced was later analysed using GC-MS analysis and the results shows a fatty acid methyl esters (FAME) profile that confirms the presence of biodiesel.
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    Kinetic Study of the Transesterification of Waste Cooking Oil
    (Department of Mechanical Engineering, Gen. Abdusalami Abubakar College of Engineering, Igbinedion University, Okada, Edo State, Nigeria, 2022) Aderibigbe, Fatai Alade; Saka, Harvis Bamidele; Mustapha, Ishola Sherif; Mohammed, Alhassan Ishaq; Amosa, Mutiu Kolade; Adeniyi, Adewale George; Ajala, Elijah Olawale; Babatunde, Esther Olubunmi; Solomon, Bamidele Ogbe
    The rate and cost of biodiesel production has been hampered by the nature of the catalysts and feedstocks used. The bifunctional catalyst prepared from the mixture of 40 wt% sulphonated corncob (acid source) and 60 wt. % calcined cowbone (base source) was employed in the kinetic studies of the waste cooking oil transesterification for biodiesel production. The kinetic reaction tends towards fitting into a pseudo-first order reaction with activation energy (Ea) and collision factor of 21.4833 kJ/mol and 0.4909𝑠−1 , respectively. The effects of each parameter on the production of biodiesel were highlighted. The physicochemical properties such as the flashpoint (403 K), pour point (281.2 K) and cloud point (283.11 K) of the synthesized biodiesel were also obtained. Furthermore, a test on reusability was performed for the bifunctional catalyst and it was found to retain its catalytic potential until the fifth cycle with a percentage catalyst loss of 7 %. This result indicates that the bifunctional catalyst was effective in the kinetic study of the transesterification of waste cooking oil.