Browsing by Author "Busari, Y. O"

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    Assessment of Phoenix Dactylifera seed extract as a green inhibitor for the corrosion of mild steel in an acidic solution
    (Published by University Politehnica Timsoara, Faculty of Engineering Hunedoara, 2024-09-19) AMBALI IBRAHIM OWOLABI; Ayinde, I. V; Busari, Y. O; Yahya, R. A; Ameen, M. O; Abdulraman, S. O; Ajao, K. S; Nurudeen, T.A; Adegbola, J. O
    Metal corrosion continues to be a major problem for a variety of sectors, prompting the investigation of innovative and environmentally acceptable corrosion prevention techniques. This study examined the potential of Phoenix dactylifera (date palm) seed extract as a green corrosion inhibitor for mild steel in an acidic environment (HCl). The study thoroughly investigated the inhibitory effects of various extract concentrations (0.2–1.0 g/l) on corrosion rate and efficiency across exposure times of 168 hours using both gravimetric and Tafel polarisation methods. According to experimental findings, extract concentration and corrosion inhibition effectiveness were strongly correlated. Corrosion rates were significantly reduced at higher extract concentrations, supporting the extract's potential as a powerful inhibitor. From the results, optimum inhibiting efficiency of 96.4% with concentration of 1.0 g/l after 72 hours of exposure and 61.99% from 1.0 g/l extract were observed for gravimetric and Tafel polarization, respectively. By emphasizing the extract's capacity to adsorb components onto the steel surface and create a shield that prevents corrosion, the research also contributes to the evolving field of corrosion science through introduction of a natural and eco–friendly corrosion inhibitor
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    Characterisation of Briquette Fuel Produced from Admixture of Coconut Coir and Sawdust Particles using Starch Gel Binder
    (Published by Faculty of Engineering and Technology, University of Ilorin, Ilorin., 2026-03-30) AMBALI IBRAHIM OWOLABI; Shuaib-Babata, Y. L; Busari, Y. O; Issa, A. M; Ajao, K. S; Popoola, O.T
    This study investigated the effect of compositional variation on the properties of biomass briquettes produced from the admixture of coconut coir (CC) and sawdust (S) using cassava starch as a binder. The materials were locally sourced and processed to produce five formulations of briquette samples from 100:0 to 50:50 (CC:S) at compaction pressure of 5 MPa and curing temperature at 105 oC for 1 hour. The characterization of the briquettes was done using proximate, ultimate, physical and combustion analysis according to established ASTM standards. Results showed the moisture content of the briquette samples varied from 6.87 to 7.77%, ash content from 3 to 6%, fixed carbon from 11.51 - 14.07% and volatile matter from 74.5 - 76.9%. The Higher Heating Value (HHV) was found to vary from 15.88 - 16.71 MJ/kg. The statistical analysis with one-way ANOVA confirmed significant differences (p < 0.05) between different compositions. The briquette sample with 50:50 of coconut coir and sawdust ratio was found to have superior combustion properties with the highest HHV and lowest ash content. The findings demonstrated that optimizing composition and minimizing ash content significantly improves briquette performance. The produced briquette is recommended for both domestic and industrial applications.
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    Characterization of Baruten Local Government Area of Kwara State (Nigeria) fireclays as suitable refractory materials
    (Faculty of Engineering, University of Nigeria, Nsukka, Nigeria, 2018-06-10) AJAO, K. S; Shuaib-Babata, Y. L; Ambali, I.O; Mohammed, G. A; Yaru, S. S; Abdulkareem, S; Busari, Y. O
    Studies have shown that adequate attention needs to be paid on processing of solid minerals that are potentially available in Nigeria to address its economic problem. Clays from five major towns in Baruten Local Government Area, Kwara State, Nigeria were examined using ASTM guidelines to determine their suitability for refractory applications. The clay samples were classified as Alumino-Silicate refractories due to high values of Al2O3 and SiO2. The results showed apparent porosity (19.4-25.6%), bulk density (1.83-1.90 g/cm3), cold crushing strength (38.7-56.1 N/mm2), linear shrinkage (4.4 – 9.3%), clay contents (52.71-67.83%), moisture content (17.0-23.6%), permeability (68-82 cmsec-1), plasticity (16.7-30.4%), refractoriness (>1300oC) and Thermal Shock Resistance (23-25 cycles) for the clay samples, which were measurable with the established standards for fireclays, refractory clays/brick lining or alumina-silicates and kaolin. Hence, the natural clays could suitably replace imported clays in some refractory applications. Appropriate use of information from this study would improve Nigeria’s industrialization and economic diversification.
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    Characterization of Baruten Local Government Area of Kwara State (Nigeria) fireclays as suitable refractory materials
    (Faculty of Engineering, University of Nigeria, Nsukka, Nigeria, 2018-04-10) AMBALI, IBRAHIM OWOLABI; Shuaib-Babata, Y. L; Yaru, S. S; Abdulkareem, S; Busari, Y. O; Ajao, K. S; Mohammed, G. A
    Studies have shown that adequate attention needs to be paid on processing of solid minerals that are potentially available in Nigeria to address its economic problem. Clays from five major towns in Baruten Local Government Area, Kwara State, Nigeria were examined using ASTM guidelines to determine their suitability for refractory applications. The clay samples were classified as Alumino-Silicate refractories due to high values of Al2O3 and SiO2. The results showed apparent porosity (19.4-25.6%), bulk density (1.83-1.90 g/cm3), cold crushing strength (38.7-56.1 N/mm2), linear shrinkage (4.4 – 9.3%), clay contents (52.71-67.83%), moisture content (17.0-23.6%), permeability (68-82 cmsec-1), plasticity (16.7-30.4%), refractoriness (>1300oC) and Thermal Shock Resistance (23-25 cycles) for the clay samples, which were measurable with the established standards for fireclays, refractory clays/brick lining or alumina-silicates and kaolin. Hence, the natural clays could suitably replace imported clays in some refractory applications. Appropriate use of information from this study would improve Nigeria’s industrialization and economic diversification.
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    Characterization of Belle natural moulding sand for foundry applications
    (Department of Civil Engineering, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria, 2019-01-13) AMBALI, IBRAHIM OWOLABI; Shuaib-Babata, Y. L; Nafiu, M. B; Ajao, K. S; Elakhame, Z. U; Busari, Y. O; Hassan, H. K; Aremu, N. I
    There exists vast availability of natural sands which may be suitable for foundry applications in different locations Kwara State in particular and generally in Nigeria. The sands need to be identified and characterised for productive and profitable foundry practices. In this study, assessment of chemical and physico-mechanical properties of the natural moulding sand in Belle community of Kwara State, Nigeria was carried out to ascertain its suitability for foundry applications. The analysis of the sand samples’ Chemical compositions were done using an XRF Analyser, while American foundry-men Society, ASTM and British standards laboratory tests procedures were adopted appropriately to determine the sand’s physico-mechanical properties. The results of chemical composition analysis showed that SiO2 have dominance proportion in the sand sample with an average value of 92.90 %, followed by Al2O3 (5.13%). CaO, Fe2O3, MgO, K2O, Na2O, ZnO and MnO were present within acceptable limits as trace elements. The results showed average physico-mechanical properties of the natural moulding sand sample to include grain fineness number (126), bulk density (1765 Kg/m3), moisture contents (7.66%), specific gravity (2.64), permeability (0.1cm/s), green compressive strength (51KN/m2), dry compressive strength (209KN/m2), flowability (65.22%), clay content (10%) shatter index (76%) and refractoriness (>900oC), which were within the required standards for casting of non-ferrous metal. Thus, Belle sand was found suitable for casting of non-ferrous metals. Though, there may be a need for the use of additives like bentonite, to enhance the sand’s clay content in order to increase the sand potential for foundry applications.
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    Development of Functional Oil-Adsorption Material from Watermelon Rind for Remediation Oil Spill Related Pollution
    (Published by the University Politehnica Timisoara, Faculty of Engineering Hunedoara, 5, Revolutiei, 331128, Hunedoara, Romania, 2021-09-22) AMBALI IBRAHIM OWOLABI; Saleeman, K. W; Ibrahim, H. K; Busari, Y. O; Shuaib-Babata, Y. L; Aduagba, A. G; Adegbola, A. S; Ajao, K.S
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    Suitability of some selected Ado-Ekiti (Nigeria) natural moulding sands’ properties for sand casting
    (Faculty of Engineering, Covenant University, Ota, Nigeria, 2017-12-02) AMBALI, IBRAHIM OWOLABI; Shuaib-Babata, Y. L; Yaru, S. S; Abdulkareem, S; Ajayi, S; Busari, Y. O; Ajao, K. S; Ibrahim, H. K; Mohammed, G. A
    In achieving accelerated and sustaining economic growth and development in Nigeria, there is need for domestication of finished goods production through sustainable industrialization. Foundry technology is one of the vital bases for rapid industrial development of any nation. Samples of moulding sand at green state were collected from four different moulding sand deposits within Ado-Ekiti in Nigeria. The samples were prepared using ASTM and British standards, while the materials’ Physico-mechanical properties were evaluated using American Foundry Society (AFS) guidelines. The results obtained from the tests were compared with the AFS’s satisfactory mould sand properties for various types of metal castings. The sand samples were found to meet the requirements for casting various metals of different types like Aluminum, brass and bronze, light and malleable iron, light and medium grey iron, except heavy steel. The presence of red oxide in the sands and the specimens’ higher compressive strength values show that the natural sands will be suitable for casting of non- ferrous metal of low temperature. Effective application of the sample sands in casting will also enhance industrialization, job creation and the nation self-reliance through reduction in importation of foundry sand and foundry products into the