Browsing by Author "Mustapha, S. I."

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    Epistemology, culture and physics education: Implication for sustainable development
    (Department of Science Education, University of Ilorin, Ilorin., 2018-07) Badmus, Olalekan T.; Mustapha, S. I.; Omosewo, E. O.
    The knowledge and belief of a people form significant component of their culture. The culture is embedded in the ways they think, perceive and behave even in learning situations. How learning takes place have been established in the literature to depend significantly on attitude. Learners attitude towards learning encompasses the language, mode and competence in the delivery of instruction. Aboriginal language and culture influence learning and allow learners to embrace instructions with peculiarity to their lineage. This study examines the confluence of belief, culture, and learning of physics within and outside the classroom. Inferences drawn based on the findings of various researchers regarding all reflected components in this study. Specifically, this study investigated the extent to which all the aforementioned variable influence students learning of physics, taking into consideration the role of physics education in the attainment of Sustainable Development Goals (SDGs) of the United Nations.
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    Hydrothermic Reduction of Rutile-Ilmenite Mineral Producing an Oxyhydride η-Ti2FeO0.2H2.8: Towards In-Situ Hydrogen Production and Storage
    (NIGERIAN JOURNAL OF TECHNOLOGICAL DEVELOPMENT, 2024-03) Mohammed, I. A.; Mustapha, S. I.; Aderibigbe, F. A.; Hambali, H. U.; Afolabi, A. M.; Muritala, K. B.; Aliyu U. M.
    ABSTRACT: As an alternative to the physical storage of hydrogen as compressed gas or liquid hydrogen requiring high-pressure tanks and cryogenic temperatures, the material-based storage of hydrogen in solids involves hydrogen uptake and release from the surface of adsorbents or within interstitials of hydrides. We report a hydrothermic reduction of rutile-ilmenite mineral into hydrogen-rich fibrous products, η-Ti2FeO0.2H2.8, in an ethanol-water system at 120°C for 4 hrs. As part of a project to generate hydrogen from water-ethanol system using advanced catalysts containing graphene oxide (GO) as carbon source, a system of 62.5 μg graphene oxide per g of rutile-ilmenite mineral was employed in a concentration of 50 mg/mL of ethanol-water solution. As well as in the original mineral, XRD of thermal annealed mineral between 500 and 800°C showed no hydride or phase change in rutile-ilmenite. With hydrothermal treatment of GO/rutile-ilmenite (50 mg/mL) in ethanol-water (1:1 v/v) at 120°C, a hydrogen-rich ferrotitanium hydride phase was formed, and there was a change in morphology from plate-like and granular particles into fibrous structures. Like the release of hydrogen by its ‘carriers’ (e.g., CaH2, NH4BH4, NaBH4, NH3, formic acid), it is anticipated that hydrogen was generated from the ethanol-water system in-situ, which reduced the rutile-ilmenite mineral into a hydride. EDX results showed that the reduction affected specifically the oxides of Fe and aluminosilicates in the mineral. The study demonstrated a possibility of in-situ hydrogen generation and storage via low-temperature graphene oxide hydrothermic reduction of rutile-ilmenite mineral in an ethanol-water system. KEYWORDS: Hydrogen, hydrothermic, ethanol-water, rutile-ilmenite, graphene oxide
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    OPTIMIZATION OF NICKEL (II) AND CHROMIUM (III) REMOVAL FROM CONTAMINATED WATER USING SORGHUM BICOLOR
    (Nigerian Journal of Technology (NIJOTECH), 2017-07-01) Adewoye, L. T.; Mustapha, S. I.; Adeniyi, A. G.; Tijani, J. O.; Amoloye, M. A.; Ayinde, L. J.
    A central composite design (CCD) under the response surface methodology (RSM)was used to study the effect of three adsorption variables (pH, initial concentration, and adsorbent dosage) in order to determine the optimum process conditions for the adsorptions of Ni (II) and Cr (III) onto sulphuric acid modified sorghum bicolor activated carbon (SBAC).This study yielded removal efficiency of 98.89 % for Ni (II) and 94.27 % for Cr (III) ion under optimal conditions of pH (8), initial metal ion concentration (25 mg/L), adsorbent dosage (10 mg) and pH (7), initial metal ion concentration (5 mg/L), dosage (15 mg);respectively. Statistical analysis of variance results showed a good correlation existed between the experimental and predicted data with R2 values of 0.99 for Ni and 0.98 for Cr. The equilibrium data for Ni (II) adsorption was best described using Freundlich model while Langmuir model best fit Cr (III) adsorption. The mechanism of adsorption for both Ni and Cr adsorptions on SBAC followed Pseudo second order kinetic model.