Browsing by Author "Orhevba, B. A."

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    Development Of an Automated Dual Powered Kiln for Drying and Preservation of Fish
    (Iconic Research and Engineering (IRE) Journals, 2024-04-20) Ogundana, O.S.; Adejumo, B.A.; Orhevba, B. A.; Bori Ige
    Fish smoking is a major activity in the fish industry. In most river-reining communities in Nigeria, where fish business is very prominent smoking operations are mostly carried out manually and under unhygienic conditions. The concept of the smoking kiln development is to ease the drudgery associated with traditional methods in the fish processing communities. The materials for the developed automated dual powered kiln for fish smoke-drying are locally and cheaply sourced. The developed automated dual powered kiln was made from angle iron and lagged with (composite materials) insulator to prevent heat loss, the smoking chamber consists of 3 set of trays of 0.57 x 0.57 x 0.021 m. It was a dual powered kiln of gas and electric heat sources (DC), its heating elements (heaters) are connected with the aid of wire gauze made from stainless steel placed in a compartment in the heating chamber. The developed automated dual powered kiln was tested with Cat Fish (Clarias Gariepinus) using gas and electric heat sources. Test results indicated an average operational temperature of 80⁰C and moisture loss of 50% on the smoked fishes. The kiln gave higher drying rate and quality of finished product was good in colour and dryness, indicating a long shelf life.
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    Optimisation Of The Production Parameters Of Delonix Regia Methyl Ester Using Box Behnken Design
    (INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH, 2019-09-09) Adejumo, B. A.; Agboola, J. B.; Orhevba, B. A.; Obasa, P. A.; Simeon, Meshack Imologie
    The optimisation of the production parameters of Delonix regia ester was carried out to establish the parameters for the production of optimum methyl ester yield from Delonix regia seed oil. The effects of reaction temperature, reaction time, alcohol: oil molar ratio, and catalyst concentration as well as their interaction effects on the yield of methyl ester, were investigated using the response surface methodology Box-Behnken design. Data obtained were analyzed statistically using Design expect 9.0 statistical package to determine the response model, surface respond anal ysis of variance (ANOVA). The data collected from optimization of the reaction process was fitted to a model. The results showe d that the percentage yield in term of reaction temperature, time, molar ratio, concentration and interaction terms of reaction tem perature and reaction time were significant (p ≤ 0.05) while the lack of fit F value for the Delonix regia methyl ester yield response showed that it was not significant ( p ≤ 0.05) relative to the pure error. This indicates that all the models predicted for methyl ester yield response were adequate. Regression models for data on response methyl ester yield were significant ( p ≤ 0.05) with a satisfactory R 2 value of 0.829. The boundaries of the design intergalactic of methyl ester yield have the lowest value at 72 % within the process range of 40 0 C to 56 0 C for Temperature, 30 to 53 minutes for Reaction time, for all production processes while the highest of 90.21 % with the process boundary range of 55 to 60 0 C for A: Temperature, 40 to 60 minutes reaction ti me. The optimization solution gave the process conditions for each process factor at the highest desirability prediction of 0.642 as the best reaction temperature of 53.20 0 C and the reaction time of 60 minutes, alcohol: oil molar ratio of 2:1, and catalyst concentration of 0.69% when the set goal is based on the physic thermal properties of produced methyl ester.