http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/110 2026-05-27T16:35:53Z 2026-05-27T16:35:53Z Yerima, M.L Abdulkareem, A.S. Abubakare, O. K. Ndaliman, M. B. Khan, R. H. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30902 2026-05-06T17:21:08Z 2018-01-01T00:00:00Z

Title: EFFECT OF CARBON NANOTUBE CONTENT ON THE MECHANICAL PROPERTIES OF CNT-REINFORCED ALUMINIUM ALLOY METAL MATRIX COMPOSITES Authors: Yerima, M.L; Abdulkareem, A.S.; Abubakare, O. K.; Ndaliman, M. B.; Khan, R. H. Abstract: The paper presents the results of experimental investigations of CNT-Al 2024 alloy composites having 0.5 wt%, 1 wt%, 1.5 wt%, 2 wt% and 2.5 wt% of CNT prepared through liquid metallurgy (stir cast) route. The composite specimens were machined as per test standards. Some of the mechanical properties have been evaluated and compared with Al2024 alloy. Significant improvement in tensile properties, compressive strength and hardness are noticeable as the weight percentage of the CNT increases. The microstructures of the composites were studied to know the dispersion of the CNT in matrix. It has been observed that addition of CNT significantly improves tensile strength along with compressive strength and hardness properties by 56, 61, and 9% respectively, as compared with that of unreinforced matrix

2018-01-01T00:00:00Z Yerima, M.L Isa, M Joseph, A. Attahiru, I. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30897 2026-05-06T16:12:30Z 2025-01-01T00:00:00Z

Title: A Review on utilization of agricultural wastes as reinforcement for aluminium matrix composites: A Circular Economy Approach Authors: Yerima, M.L; Isa, M; Joseph, A.; Attahiru, I. Abstract: Global warming presents significant challenges that demand immediate attention. A number of issues are known to be infamously contributing to this worldwide issue, including industrial operations, the disposal of plastics, electrical devices, and agricultural waste. As world leaders gather to pass rules and regulations to safeguard our planet, researchers have suggested green manufacturing and agro-based alternatives to address this threat. This study challenges synthetic materials like carbon fiber and asbestos, which are known kingpins that can increase landfills worldwide and have detrimental health effects, by demonstrating the feasibility of turning agricultural waste into valuable engineering materials as an alternative manufacturing material. With an emphasis on aluminum matrix, which is a crucial component in manufacturing because of its exceptional qualities, including cheap cost and density, high strength to weight ratio, and resistance to corrosion, among others. According to a review of the literature, fly ash, bottom ash, rice husk ash, and bean pod ash are only a few of the elements that have been used as reinforcement in metal matrix composites. Publicly available research indicates that incorporating agricultural waste particles into a metal matrix in a specific ratio produces a number of desired characteristics, such as decreased greenhouse gas emissions, increased energy efficiency, and improved mechanical performance. The features and applications in several areas were studied in the article. It has been determined that aluminum matrix composites supplemented with agricultural wastes are a viable option for mitigating climate change by lowering CO2 emissions and promoting sustainable production and consumption.

2025-01-01T00:00:00Z Yerima, M.L. Abdulkareem, A.S. Abubakare, O. K. Ndaliman, M. B. Khan, R. H. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30881 2026-05-05T22:53:17Z 2021-01-01T00:00:00Z

Title: Synthesis of Ni-Al2O3 Nanocatalyst for Low Temperature Production of Carbon Nanotubes (CNTs) Authors: Yerima, M.L.; Abdulkareem, A.S.; Abubakare, O. K.; Ndaliman, M. B.; Khan, R. H. Abstract: This study focused on the synthesis of nickel - aluminium oxide support (Ni-Al2O3) nanocatalyst by wet impregnation method. The catalyst yield of 86.00 % was obtained at temperature of 400 OC for 3 hours after calcination. The catalyst was characterized to determine the thermal property, Morphology, crystalinity, pore volume/particle size and surface area using TGA, SEM/EDX, XRD, DLS and BET respectively. Results obtained revealed that the catalyst produced has an average particle size of 82.24 nm. It was highly crystalline with BET surface area of 428.352 m2/g, pore size of 0.2817 Â and pore volume of 0.1779 cc/g. Analysis of the results also shows that the catalyst developed is thermally stable with about 0.5% wt loss at 800 OC, which makes the catalyst suitable for CNTs production. The catalyst developed was used to produce carbon nanotubes at operating temperature of 600 OC with argon flow rate of 30ml/min, acetylene flow rate of 300 ml/min and production time of 55 minutes. The results obtained revealed that the yield of 135 % was obtained. The CNTs produced was characterized and the results shows that the produced CNTs is thermally stable with BET surface area of 833.64 m2/g, pore volume of 0.3286 cc/g and pore size of 0.3148 Â. This study demonstrated that employing Ni-Al2O3 nanocatalyst provides suitable route for efficient low temperature production of CNTs.

2021-01-01T00:00:00Z Ajao, M. O. Jatau, A. E. Isah, M. Aisha, Y. Yahaya, A. T. Yerima, M. L. Abdullahi, I.B http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30845 2026-05-05T15:44:00Z 2024-09-01T00:00:00Z

Title: Examining the Opportunities and Obstacles of Waste-To-Energy For Sustainable Energy Utilization In Nigeria: A Brief review. Authors: Ajao, M. O.; Jatau, A. E.; Isah, M.; Aisha, Y.; Yahaya, A. T.; Yerima, M. L.; Abdullahi, I.B Abstract: The global surge in energy demand, fueled by population growth and economic expansion, underscores the increasing reliance on fossil fuels and the pressing need for renewable energy solutions. While fossil fuels dominated global energy consumption in 2020, the transition to renewables, particularly solar and biomass, is gaining momentum, with projections indicating a two-fold increase in the renewable energy market by 2040. In Nigeria, the energy sector faces multifaceted challenges, including an overreliance on fossil fuels, inadequate electricity supply, and environmental degradation from alternative energy sources like generators. Waste-to-Energy (WTE) technologies present a promising solution to address Nigeria's dual crises of energy scarcity and waste management. With an abundance of organic waste and untapped potential for energy recovery, methods such as anaerobic digestion, landfill gas recovery, and incineration offer viable pathways for clean energy production. However, barriers such as inadequate funding, technological limitations, and policy constraints hinder the development of WTE initiatives. Drawing on global WTE successes, particularly in the European Union, this study evaluates Nigeria's WTE potential, highlighting proposed and failed projects, and identifies critical factors for overcoming current challenges. The findings emphasize the necessity of tailored approaches that integrate local conditions, policy reforms, and increased investment to harness Nigeria’s vast waste-to-energy potential. Ultimately, this research contributes to the discourse on achieving sustainable development through innovative energy recovery methods.

2024-09-01T00:00:00Z