Browsing by Author "Hassan Kobe, Ibrahim"

Now showing 1 - 4 of 4
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    Development of functional oil-adsorption material from watermelon rind for remediation oil spill related pollution
    (ACTA TECHNICA CORVINIENSIS - BULLETIN OF ENGINEERING, 2022) Yusuf Lanre, Shuaib-Babata; Hassan Kobe, Ibrahim; Ibrahim Owolabi, Ambali; Kabiru Suleiman, Ajao; Kafayat, Saleeman; Yusuf, Busari; Ganiyu, Aduagba; James, Adegbola
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    Inhibitive Potential of Prosopis Africana on Corrosion of Low Carbon Steel in 1M Hydrochloric Acid Medium
    (Deer Hill Publications, 2019) Yusuf Lanre, Shuaib-Babata; Hassan Kobe, Ibrahim; Ibrahim Owolabi, Ambali; Raheem Abolore, Yahya; Ishaq, Aremu; Kabiru Suleiman, Ajao; Abibat, Pelumi
    Recently, there is quest for the use of inexpensive, non-toxic, non-biodegradable, readily available and environmentally acceptable corrosion inhibitor. Studies have shown that these properties could be achieved through the use of plants as inhibitor. Inhibiting effect of Prosopis Africana (Iron Tree) seed extracts were assessed on a sample of low carbon steel in 1M HCl with varying proportion of the seed extract using gravimetric, Tafel polarization and gasometrical measurement techniques. The results show that weight loss/corrosion rate decreases with increase in the extracts’ concentrations. Good inhibiting efficiency of Prosopis Africana extracts with optimum inhibiting efficiency of 97.7% at 1.0 g/l after 120 hours exposure in gravimetric measurement was attained. TAFEL polarization results revealed that the Prosopis Africana extract shows that the corrosion current density decreases with the increase in the concentration of the extract. The extract is found suitable as green inhibitor for corrosion of low carbon steel in the studied medium.
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    MODELLING OF CORROSION INHIBITION OF CUCUMBER PLANT EXTRACTS ON AISI 1007 STEEL IN SEA WATER
    (UNIVERSITY OF GALATI, 2022) Yusuf Lanre, Shuaib-Babata; Hassan Kobe, Ibrahim; Yusuf, Busari; Rasheedat, Mahamood; Sikiru, Abdulraman; Ibrahim Owolabi, Ambali; Lawal, Abdulquadir; Ishaq, Aremu; Kabiru Suleiman, Ajao; Samuel, Ejiko
    Adsorption Models with the application of corrosion experimental data is a very popular mechanism to predict various inhibitive systems. The effective modelling and interpretation of adsorption isotherms reliably determine the level of accuracy of adsorption processes. This study aims to apply the adsorption models and inhibitive mechanism of Cucumber Peel Extract (CPE) and Cucumber Seed Oil (CSO) to corrosion of AISI 1007 steel grade in the saline medium using both the electrochemical (Tafel Polarisation) and non-electrochemical (Weight Loss) techniques. The chemical composition of AISI 1007 and the phytochemical properties of studied extracts were determined. Consideration was given to Langmuir and Dubinin-Radushkevich Isotherm models (D-RIM) to study the inhibitive properties of CPE and CSO on AISI 1007 steel in an aggressive medium. The result of inhibition efficiency from weight loss measurement showed maximum inhibitions of 94.44 % and 95.44 % with 1.0 g/L concentration of CPE and CSO respectively in sea water medium. The result of the studied extract at 25 ℃ in seawater showed that the corrosion current density of AISI 1007 steel decreased and increased in the inhibition efficiency with 87.33% and 94.67% for CPE and CSO respectively. The negative value of ΔGads was greater than 20 kJ/mol and was obtained as a result of electrostatic interaction between the adsorbed inhibitor molecules and the ions/atoms on the metal surface. The studied inhibitors were confirmed to be mixed organic corrosion inhibitors type. The values of E and maximum surface coverage (θmax) for the two measurements are satisfactorily in acceptable agreement as similar to the range of value obtained for inhibition efficiency.
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    Quality evaluation of commercially available steels in some selected Nigerian markets
    (ANNALS of Faculty Engineering Hunedoara – International Journal of Engineering, 2019) Yusuf Lanre, Shuaib-Babata; Kabiru Suleiman, Ajao; Hassan Kobe, Ibrahim; Ibrahim Owolabi, Ambali; Ishaq, Aremu; Reuben, Adewuyi; Jimoh, Abdul
    The incessant building collapse and structural failures in Nigeria has renewed interests in the evaluation of the basic properties of reinforcing steel bars in Nigeria markets, since local markets serve as major source of supply for the steels used in construction and structural development. Thus, this study evaluated the quality of commercially available reinforcing steel bars in some selected markets with a view to determine their suitability for structural applications. Various steel bars samples were obtained from markets in four Nigeria cities. The basic physico-mechanical properties of the samples were examined and the obtained results were compared with the specified parameters in Nigerian Industrial Standard (NIS), ASTM and British Standards. Visual inspections revealed that most of the parameters that must to be indicated in identification marks on reinforcing steel bars were absent. Results also showed that the samples contained the basic chemical constituents of steel and possessed significant strengths and hardness values, but with noticeable inconsistencies in their contents. Thus, the level of compliance with the specified properties in the standards needs improvement. To avoid incessant structural failures in the country, regular and effective monitoring of the quality of steel bars in the markets for structural applications becomes imperative.