Browsing by Author "Aremu I.N"

Now showing 1 - 4 of 4
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    Corrosion inhibition efficacy of hybrid organic extracts from prosopisAfricana and citrulluslanatus on mild steel in acidic medium
    (Published by Faculty of Engineering,Domneasca Street, 111, Galati, Romania, 2023-03-20) AMBALI IBRAHIM OWOLABI; Shuaib-Babata, Y.L; Ayinde I.S; Busari Y.O; Ameen M. O; Yahya R.A; Aremu I.N; Abdulraman S.O; Ajao K.S; Garuba A.A
    Each of Prosopis Africana pod extract (PAPE) and Citrulluslanatus (WMPE) performed quite well as green inhibitors in the electrochemical corrosion in acidic solution at ambient temperature in previous research. However, the hybridization of these compounds was varied with the concentration ratio in this study to optimize the efficiency of the green inhibitor in a hydrochloric acid medium using mild steel. The extraction process of the inhibitor samples was carried out with the Soxhlet apparatus using n-hexane as the solvent. Furthermore, the potential inhibition efficiency was monitored using various corrosion measurement techniques at room temperature. The inhibitive response of the extracts could be attributed to the adsorption of the extracts’ components on mild steel surface by physisorption mechanism according to the Langmuir adsorption isotherm model. The results revealed that inhibition efficiency (IE%) depends on the concentration of the extracts. The peak IE% values were obtained with a hybrid ratio of 3:1 (PAPE: WMPE) for gravimetric technique. The Tafel polarization and gasometrical measurement technique is 96.7%, 98.5% and 83.1% respectively at the concentration of 1.0 g/L, which are above the peak IE% for PAPE (93.7%, 80.96% and 77.8%) and WMPE (92.7%, 80.5% and 75.6%)
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    Production of Abrasive Sandpaper using Periwinkle Shells and Crab Shells
    (Published by Dhaka University of Engineering & Technology, Gazipur, Bangladesh, 2020-06-30) AMBALI IBRAHIM OWOLABI; Shuaib–Babata Y.L; Abdulqadir L.B; Ibrahim H.K; Aremu I.N; Ibraheem T.O
    In this study, the properties of periwinkle shell and crab shell grains, such as hardness, compressive strength and wear resistance were examined for their suitability as abrasive materials. The binding effect of polyester resin at high concentration was also considered. Through the process of crushing, grinding and subsequently sieving using ASTM E11 set of sieves, the shells were processed into grit standards grain sizes of P40 and P60. Furthermore, by mixing and mould compression using a hydraulic press polymer matrix composite with particles varying from 96 wt.% to 92 wt.% and resin 3 wt.% to 7 wt.% with 1 wt.% each of cobalt naphthalene and methyl ethyl ketone peroxide hardener respectively were developed from the grits. It was found that, with an increase in polyester resin content, the hardness and compressive strength increased, while the wear rate decreased. The composition with 92 wt.% periwinkle shell grains to 7 wt.% polyester resin was found to be with the most improved abrasive properties
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    The Suitability of Using Environmental Waste (Polystyrene Foam, Sawdust and Eggshells) for Developing a Hybrid Composite for Ceiling Boards
    (Published by Faculty of Engineering, University of Nigeria, Nsukka, 2022-01-13) AMBALI IBRAHIM OWOLABI; Shuaib-Babata Y. L; Busari Y.O; Abdulraman S.O; Abdulqadir L.B; Ajao K.S; Aremu I.N; Arowolo I.O
    This study considers the suitability of using environmental wastes (polystyrene foam, sawdust and eggshell) for the development of composite materials for ceiling boards. The materials were collected from dumping sites and processed accordingly. The elemental compositions of the processed sawdust and eggshell were examined using Atomic Absorption Spectrometer (ASS) and plasma-optical emission spectrometer (Optimal 3100XL Perkin Elmer) respectively. Properties of the composite samples were determined using appropriate ASTM standards (ASTM D570, C109-95, D3479, E1530 and D7336/D7336M). The results show that the composite with a mix ratio of 5% Polystyrene, 10% sawdust and 40% eggshell exhibited the most suitable properties for ceiling board production or indoor uses in building: water absorption (0.52 and 6.17% for 2 and 24hours respectively), tensile strength (2.362 N/mm2), elongation at break (0.677 mm), compressive strength (0.1575 N/mm2), energy to break (0.016 N.m) and thermal conductivity of 0.0221 W/M.K. Thus, the production of suitable ceiling board using some bio-wastes can be domesticated in Nigeria.
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    The Suitability of Using Environmental Waste (Polystyrene Foam, Sawdust and Eggshells) for Developing a Hybrid Composite for Ceiling Boards
    (Published by Faculty of Engineering, University of Nigeria, Nsukka, 2022-01-14) AMBALI IBRAHIM OWOLABI; Shuaib-Babata Y.L; Busari Y.O; Abdulraman S.O; Abdulqadir L.B; Ajao K.S; Aremu I.N; Arowolo I.O
    This study considers the suitability of using environmental wastes (polystyrene foam, sawdust and eggshell) for the development of composite materials for ceiling boards. The materials were collected from dumping sites and processed accordingly. The elemental compositions of the processed sawdust and eggshell were examined using Atomic Absorption Spectrometer (ASS) and plasma-optical emission spectrometer (Optimal 3100XL Perkin Elmer) respectively. Properties of the composite samples were determined using appropriate ASTM standards (ASTM D570, C109-95, D3479, E1530 and D7336/D7336M). The results show that the composite with a mix ratio of 5% Polystyrene, 10% sawdust and 40% eggshell exhibited the most suitable properties for ceiling board production or indoor uses in building: water absorption (0.52 and 6.17% for 2 and 24hours respectively), tensile strength (2.362 N/mm2), elongation at break (0.677 mm), compressive strength (0.1575 N/mm2), energy to break (0.016 N.m) and thermal conductivity of 0.0221 W/M.K. Thus, the production of suitable ceiling board using some bio-wastes can be domesticated in Nigeria