http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/107 Wed, 29 Jul 2026 19:52:17 GMT 2026-07-29T19:52:17Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31676 Title: Optimisation of Biodiesel Production from Sandbox (Hura crepitans) Seed Oil Authors: Usman, M.; Adebayo, S.; Aliyu, M.; Dauda, S.M Abstract: Transesterification reaction is the most common method of biodiesel production from fats or vegetable oil. In this research, Sandbox (Hura crepitans) seed oil is used as feedstock extracted by solvent extraction using N- hexane as solvent. The study evaluates properties of the oil for it suitability in biodiesel production, biodiesel yields as it is affected by the reacting conditions such as methano-oil molar ratio, reaction temperature, catalyst concentration and reaction time, the reaction conditions are optimized using a two-step four factor factorial design. Results indicate that the feedstock is suitable for biodiesel production, catalyst concentration and reaction times interaction are the important factors that has greater effect on the yield of ethyl ester. The optimum yield condition for Sandbox (Hura crepitans) were 0.2wt/wt molar ratio, 30oC temperature, 0.4wt% catalyst concentration and 60 min reaction time yielding 93% ethyl ester (biodiesel), and all the measured properties of Sandbox (Hura crepitans) of biodiesel met with ASTM6751 standard exception of high polarization rate and slightly high viscosity that can be normalize by appropriate blending. The result showed that only molar ratio showed a negative effect on the reaction. Hence adhering to the standards for high quality biodiesel and economically cheap production process. Tue, 01 Aug 2017 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31676 2017-08-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31611 Title: Value-Added Sesame (Sesamum indicum) Seed Candy Quality Prediction Authors: Salihu, O.A.; Olorunsogo, S.T. Abstract: Sesame seed candy is a type of candy that is made by combining sesame seeds and either sugar or honey. These ingredients are then formed into a bar or ball shape through pressing. This study aimed to investigate the effect of storage duration and influence of three packaging material on the quality of value-added sesame seed candy. Sesame seed candy samples were packaged in different materials, including Aluminum Foil Laminated Pouches (AFLP), Low Density Poly Ethylene (LDPE, 400 gauges), High Density Poly Ethylene (HDPE, 700 gauges) and stored for 60 days at room temperature. Proximate analysis, sensory analysis and microbial analysis of the samples were carried out every 5 days. The storability analysis of the sesame seed candies shows that both storage duration and packaging material has influence on the total plate count with p-value less than 0.0001. The longer the duration of storage the more the growth of bacteria. The mold count is only affected by the packaging material. Based on the experimental result, aluminum foil laminated pouches are the best material to package the candy and it will still maintain some of its vital qualities over a period of time. Thu, 01 Jun 2023 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31611 2023-06-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31609 Title: Essential Mineral Elements Profile of Selected Foods commonly consumed in Nigeria necessary for Machine Learning operation. Authors: Durojaiye, Abdulwahab Ismail; Olorunsogo, Samuel Tunde; Adejumo, Bolanle Adenike; Babawuya, Alkali; Muhamad, Ida Idayu Abstract: Dietary mineral contents are essential nutritional elements with utmost importance which greatly contributes to both human and animal wellbeing to maintain sound health. It also assists plants to flourish adequately especially during growth. Deficiency in any of the essential micronutrients can result to life-threatening circumstances. In this study, essential elements (Ca, Fe, K, Na and Se) of two varieties of rice (NERICA 1 and FARO 59), two varieties of beans (pod borer resistant (PBR) and IT07K-318-33), plantain (Musa paradisiaca spp), Marabel irish potatoes (Solanum tuberosum L.), beef (Bos taurus) and chicken (Gallus gallus domesticus) commonly consumed in various forms were evaluatedto ensure seamless supervise machine learning operation for the calibration of a non-destructive equipment. Association of official analytical chemist (AOAC) standard experimental procedure was adopted and atomic absorption spectrophotometer (AAS) was used to obtain reference data of mineral contents for both raw and cooked samples of the selected food products. The experimental results revealed high values of 18.72mg/kg, 2.56mg/kg, 30.92mg/kg, 19.94mg/kg and 1.64mg/kg in Ca, Fe, K, Na and Se respectively across the food combinations. The result trend was observed with lowest spread of mineral values of 1.57mg/kg, 0.02mg/kg, 2.54mg/kg, 0.88mg/kg and 0.04mg/kg in the above trace elements sequence respectively. Generally, the results cascade within the daily acceptable limit for consumption as prescribed by food regulatory agencies and hence, fit and reliable for use as reference data for machine learning training for a non-destructive tool. Tue, 01 Oct 2024 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31609 2024-10-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30037 Title: Electrochemical Characterization of Stainless-Steel Mesh and carbon-felt Electrodes for Enhanced Power Generation in Terrestrial Microbial Fuel Cells Authors: Simeon, Meshack Imologie; Alaka, C. Amarachi; Daniel, Peter; Adeniyi, COlalekan D. Abstract: Terrestrial Microbial Fuel Cells (MFCs) represent a promising avenue for sustainable energy production, leveraging microbial metabolism to convert organic matter in the soil into electricity. Crucial to MFC performance is selecting electrode materials, which directly interface with electroactive microbes for electron transfer. This study conducts a comparative analysis of surface-modified stainless-steel mesh (SMS) and carbon felt (CF) electrodes in terrestrial MFCs, evaluating their performance metrics and impedance spectroscopy. The SMS electrode, fabricated using the pasting and reinforcement process, demonstrated superior performance with a maximum power of 859 µW compared to the 234 µW power of the commercially available CF electrode. This better performance of the SMS electrode was attributed to its pseudocapacitive behavior, enhancing internal charge storage capacity and overall MFC efficiency. Electrochemical impedance spectroscopy revealed a substantially higher charge transfer resistance (Rct) in the CF electrode, impeding electron transfer processes. Conversely, the SMS electrode exhibited lower Rct and improved diffusion characteristics, facilitating efficient electron transfer and mass transport. Notably, the Rct of the CF electrode was over 40 times higher, while its diffusion coefficient was approximately six times greater compared to the SMS electrode. These findings underscore the importance of tailored electrode materials in optimizing MFC performance and highlight the utility of impedance spectroscopy in elucidating the complex electrochemical processes within MFC systems, thereby guiding future advancements in sustainable power production for terrestrial MFCs. Wed, 24 Apr 2024 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30037 2024-04-24T00:00:00Z