Department of Food and Agricultural Engineering

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Browsing Department of Food and Agricultural Engineering by Author "Adebayo, K. R"

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    Development and evaluation of biomass-based alternative charcoal.
    (Published by Italian Society of Agricultural Engineering., 2020) Fadeyibi, A; Adebayo, K. R; Obafemi, T. M; Olubo, A. S; Busari, R. A; Yisa, M. G
    Environmental issues resulting from production and application of wood charcoal can be addressed by using biomass briquettes as alternative. This research was undertaken to develop and evaluate briquette from jatropha, groundnut and melon seed residues. Samples of the briquette were formed from mixtures of 0.32-0.39 kg carbonized residues, 0.30-0.40 kg starch and 0.02-0.04 kg water. Physical and mechanical properties of the briquette samples including calorific value, bulk density and breaking force were determined using standard methods. Box-Bekhen Design Methodology was used to determine the optimum briquette blend. The results showed that the optimal briquette blend gave values of 4711.87 kcal. kg-1 calorific value, 282.59 kg m-3 bulk density and 1.36 kN breaking force, with a desirability index of 61.5%. A comparative analysis of the properties of the optimal briquette with that of a wood charcoal indicates no significant difference (P<0.05). This implies that the briquette can serve as an alternative energy source for cooking in rural communities.
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    PROCESS OPTIMIZATION OF OIL EXPRESSION FROM WATERMELON (CITRULLUS LANATUS) SEEDS .
    (Published by Faculty of Engineering and Technology, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria., 2020) Busari, R. A; Fadeyibi, A; Adebayo, K. R; Olapipupo, R. F; Muhammed, F. A; Balogun, A. L
    Watermelon fruit contains large quantities of seeds, and these seeds are under-utilized. It contains a reasonable amount of oil (22%) which if expressed will serve as vegetable oil for human consumption or biodiesel for powering agricultural machines and boost the income of the farmers. The main objective of this research work is to study the interaction effect of operating parameters on the mechanical oil expression from the seed. The variables considered include applied pressure (85.00, 90.00, 95.00, 100.00 and 105.00 kN/mm2 ), roasting temperature (70.00, 80.00, 90.00, 100 and 110 °C) and moisture content (6.00, 8.00, 10.00, 12.00 and 14.00 %). A total sum of 20 batch experiments were carried out and the maximum oil yield was 13.49% (at corresponding moisture content of 6.00%, roasting temperature of 85.00 ⁰C and applied pressure of 105.00 kN/mm2 respectively) and minimum oil yield obtained was 9.41%. (at corresponding moisture content of 14.00%, roasting temperature 80 °C and applied pressure of 85.00 kN/mm2 respectively). While the optimum oil yield of 12.42% was obtained from the expression at corresponding moisture content of 6.00%, roasting temperature of 80.00ºC, and applied pressure of 105.00 kN/mm2. The result showed that the three independent variables had significant effect on oil yield and regression model equation was developed to predict the oil yield from watermelon seeds at known variables.