Ojo E . Benson | The Polytechnic, Ibadan Nigeria (original) (raw)

Papers by Ojo E . Benson

International Journal of Scientific of Research In Multidisciplinary Studies, 2023

This study aimed to assess the impact of solid waste on the physical, chemical, and biological ch... more This study aimed to assess the impact of solid waste on the physical, chemical, and biological characteristics of underground water in some areas of Ikole town in Ekiti State, Nigeria. The study was conducted by collecting groundwater samples from Otunja and Asin, which were contaminated by domestic wastewater. The samples were analysed using conventional tests, infrared spectrophotometer (IR), and atomic absorption spectrophotometer (AAS) equipment to measure pollutants concentration of groundwater. The study also compared the characteristics of a control well with the underground water at the dumping sites and evaluated the effect of the solid wastes on each well by comparing the quality to WHO standard. The results showed that the presence of solid waste in the dumping sites had a significant impact on the quality of groundwater, which was contaminated with pollutants such as turbidity, pH, alkalinity, biochemical oxygen demand, total solid, suspended solid, and microbial analysis. The study recommends the implementation of proper waste management practices to prevent groundwater contamination and protect human health.

World Academic Journal of Engineering Sciences, 2023

Refrigeration, encompassing diverse methods of heat removal, plays a pivotal role in modern indus... more Refrigeration, encompassing diverse methods of heat removal, plays a pivotal role in modern industrial and domestic applications. Among these methods, the vapour-compression system stands as the most widely employed technique due to its efficiency and versatility. This study centers on the comprehensive design, fabrication, and performance evaluation of a novel refrigerating system driven by a Gx 160 petrol engine, seamlessly integrating Nissan Micra AC components. The devised refrigerating system attains a notable weight of 982N, indicative of its robust construction, coupled with an impressive COPmax (Coefficient of Performance at maximum efficiency) value of 12.2. This exceptional COPmax underscores the system's adeptness at transforming energy input into effective cooling output. Operating within a temperature range of 31°C to 8°C, the system demonstrates its aptitude in preserving vaccines, substances pivotal in stimulating antibody production for disease protection in humans and animals. Crucially, the petrol-driven engine powering the system exhibits an efficient fuel consumption rate, utilizing a mere 0.8 litters of petrol during an 18.35-minute cooling cycle to reach the target temperature of 8°C. The results of this study unveil the potential of this petrol-driven refrigerating system as a viable solution for remote areas lacking reliable power grids, facilitating efficient vaccine preservation and contributing to enhanced healthcare outcomes. Overall, this research underscores the synergy between innovative design, meticulous fabrication, and rigorous performance assessment in creating effective refrigeration solutions. The system's robust characteristics, efficient cooling, and eco-friendly fuel consumption hold promise for a wide spectrum of applications beyond vaccine storage, impacting diverse sectors requiring dependable and energy-efficient refrigeration solutions.

International Journal of Scientific of Research In Multidisciplinary Studies, 2023

This study aimed to assess the impact of solid waste on the physical, chemical, and biological ch... more This study aimed to assess the impact of solid waste on the physical, chemical, and biological characteristics of underground water in some areas of Ikole town in Ekiti State, Nigeria. The study was conducted by collecting groundwater samples from Otunja and Asin, which were contaminated by domestic wastewater. The samples were analysed using conventional tests, infrared spectrophotometer (IR), and atomic absorption spectrophotometer (AAS) equipment to measure pollutants concentration of groundwater. The study also compared the characteristics of a control well with the underground water at the dumping sites and evaluated the effect of the solid wastes on each well by comparing the quality to WHO standard. The results showed that the presence of solid waste in the dumping sites had a significant impact on the quality of groundwater, which was contaminated with pollutants such as turbidity, pH, alkalinity, biochemical oxygen demand, total solid, suspended solid, and microbial analysis. The study recommends the implementation of proper waste management practices to prevent groundwater contamination and protect human health.

World Academic Journal of Engineering Sciences, 2023

Refrigeration, encompassing diverse methods of heat removal, plays a pivotal role in modern indus... more Refrigeration, encompassing diverse methods of heat removal, plays a pivotal role in modern industrial and domestic applications. Among these methods, the vapour-compression system stands as the most widely employed technique due to its efficiency and versatility. This study centers on the comprehensive design, fabrication, and performance evaluation of a novel refrigerating system driven by a Gx 160 petrol engine, seamlessly integrating Nissan Micra AC components. The devised refrigerating system attains a notable weight of 982N, indicative of its robust construction, coupled with an impressive COPmax (Coefficient of Performance at maximum efficiency) value of 12.2. This exceptional COPmax underscores the system's adeptness at transforming energy input into effective cooling output. Operating within a temperature range of 31°C to 8°C, the system demonstrates its aptitude in preserving vaccines, substances pivotal in stimulating antibody production for disease protection in humans and animals. Crucially, the petrol-driven engine powering the system exhibits an efficient fuel consumption rate, utilizing a mere 0.8 litters of petrol during an 18.35-minute cooling cycle to reach the target temperature of 8°C. The results of this study unveil the potential of this petrol-driven refrigerating system as a viable solution for remote areas lacking reliable power grids, facilitating efficient vaccine preservation and contributing to enhanced healthcare outcomes. Overall, this research underscores the synergy between innovative design, meticulous fabrication, and rigorous performance assessment in creating effective refrigeration solutions. The system's robust characteristics, efficient cooling, and eco-friendly fuel consumption hold promise for a wide spectrum of applications beyond vaccine storage, impacting diverse sectors requiring dependable and energy-efficient refrigeration solutions.