Browsing by Author "Adesanmi, A.J."
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Item Ground level Concentration of some air pollutants from Nigeria thermal power plants(Taylor and Francis, 2016) Adesanmi, A.J.; Adeniran, J.A.; Fakinle, B.S.; Jimoda, L.A.; Yusuf, R.O.; Sonibare, J.A.Power sector in Nigeria is undergoing structural reforms aimed at improving and expanding the current generation capacity, using thermal power plants. Ground level concentrations of air pollutants emitted from natural gas-powered thermal power plants were estimated using the American Meteorological Society-Environmental Protection Agency Regulatory Model (AERMOD). The average 24-h ground level concentrations of CO, NOx, SO2, particulate matter (PM), and volatile organic compounds (VOCs) were 31.88–72.79; 61.33–104; 0.61–3.91; 0.21–1.52; and 0.19–1.09 ìg/m3, respectively. There is need for continuous monitoring of ground level concentration of pollutants around the thermal power plants to guarantee the safety of the environment in the host communities.Item Optimization and performance evaluation of environmentally friendly rocket composite propellant(Taylor and Francis, 2018) Gbadebo, O.A.; Adeniran, J.A.; Adesanmi, A.J.; Akeredolu, F.A.; Sonibare, J.A.This paper investigated the effects of laboratory synthesised rocket composite propellants’ formulations on propellant performance parameters using response surface methodology (RSM). For the sake of a safe environment, the propellant is made of chemical constituents that have less severe effects on air quality. Experimental measurements of propellant performance parameters were carried out using the ballistic evaluation method. The thrust generated during combustion, the burn time and the propellant combustion temperature were measured using a data acquisition facility equipped with a button load cell and a thermocouple. Specific impulse, density, temperature, characteristic velocity, molecular weight and heat ratio were computed from the measured parameters. The resulting optimum rocket composite propellant formulations were 65.1%, 18.1%, 9.1%, 3.6%, 2.2% and 1.9% for the oxidiser, binder, fuel, opacifier, burning rate enhancer and catalysts, respectively. The corresponding performance indices including specific impulse, propellant density, propellant temperature, propellant characteristic velocity, molecular weight and heat ratio were 122.03 s, 1697.08 kg m-3, 2025.07 K, 987.65 m s-1, 31.50 kg mol-1 and 1.02, respectively. Findings revealed the accuracy and the adequacy of RSM in analysing and optimising the effects of composite rocket propellant formulation on its performance parameters and also a step towards producing an environmentally friendly rocket composite propellant.