Browsing by Author "Amoloye, M. A."
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Item Arid Zone Journal of Engineering, Technology and Environment(Faculty of Engineering, University of Maiduguri, Maiduguri, Nigeria., 2017-04-01) Okeola, F. O.; Odebunmi, E. O.; Ameen, O. M.; Amoloye, M. A.; Lawal, A. A.; Abdulmumeen, A. G.Abstract Batch adsorption experiment was carried out on freema (combination of Tartrazine and Sunset Yellow) an adsorbent prepared from moringa pod. The adsorption capacity of the adsorbent was determined. Effect of such factors as initial concentration of the adsorbate solution, contact time with the adsorbent, pH of the dye solution, and temperature of the dye solution on the adsorption capacity of the absorbent was determined. The result showed that the optimum adsorption was attained at pH of 3, adsorption equilibrium was attained within 60 min. The adsorption capacity increases with increase in initial concentration of the dye solution. The result of the kinetics study showed that the adsorption process was better described by the pseudo-second order rate equation. The adsorption process fitted well with both Freundlich (R2 = 0.983) and Langmuir (R2 = 0.933) models. Thermodynamic result showed ΔH and ΔS were all negative. Gibbs free energy change (ΔG) increases with increase in temperature of the dye solution.Item The Nigerian Journal of Pure and Applied Sciences(Faculty of Physical Sciences and Faculty of Life Sciences, Univ. of Ilorin, Nigeria, 2016-10-01) Okeola, F. O.; Amoloye, M. A.; Adebayo, G. B.; AbU, T. O.; Ameen, O. M.; Obiechina, B.Physicochemical analysis of crude oil and petroleum products were carried out on two different samples of crude oil and eight different samples of petroleum products. The parameters tested were specific gravity, API determination, aniline point, kinematic viscosity, water content, distillation profile, flashpoint, pour point and metal content determination. The tests were carried out using standard procedure of American society for testing and materials (ASTM). The result shows that the crude oils were different in terms of API gravity and specific gravity.API gravity of 36.2 and 31.5 respectively for crude oil C1 and C2 shows that they are not heavy crude oil. The low water content and low viscosity of the crude oils lower the risk of pipe and container corrosion and flow difficult. API gravity of gasoline and kerosene was more than 30, while that of engine oil and diesel oil was more than 30.For petroleum products, the result of density, specific gravity, viscosity and kinematic viscosity shows the value of those parameters increase from light fraction to heavy fraction. The pour point and flash point recorded for light fractions was lowered than that of heavy fractions, for both samples of gasoline P1 and P2, flash point is 49.3 oF and 51.1oF while pour point is -3 oC and -5 oC respectively, for Diesel oil D1 and D2 flash point is 244.2 and 240.2 oF and pour point is +3.2 and +3.0 oC respectively. The distillation profile result of both samples of gasoline, showed the temperatures to be in normal range. The level of heavy metal analysed were generally low but metal such as iron, copper, zinc were in abundance in the samples of the crude oil and petroleum products. The results are discussed in terms of importance and implication.Item OPTIMIZATION OF NICKEL (II) AND CHROMIUM (III) REMOVAL FROM CONTAMINATED WATER USING SORGHUM BICOLOR(Nigerian Journal of Technology (NIJOTECH), 2017-07-01) Adewoye, L. T.; Mustapha, S. I.; Adeniyi, A. G.; Tijani, J. O.; Amoloye, M. A.; Ayinde, L. J.A central composite design (CCD) under the response surface methodology (RSM)was used to study the effect of three adsorption variables (pH, initial concentration, and adsorbent dosage) in order to determine the optimum process conditions for the adsorptions of Ni (II) and Cr (III) onto sulphuric acid modified sorghum bicolor activated carbon (SBAC).This study yielded removal efficiency of 98.89 % for Ni (II) and 94.27 % for Cr (III) ion under optimal conditions of pH (8), initial metal ion concentration (25 mg/L), adsorbent dosage (10 mg) and pH (7), initial metal ion concentration (5 mg/L), dosage (15 mg);respectively. Statistical analysis of variance results showed a good correlation existed between the experimental and predicted data with R2 values of 0.99 for Ni and 0.98 for Cr. The equilibrium data for Ni (II) adsorption was best described using Freundlich model while Langmuir model best fit Cr (III) adsorption. The mechanism of adsorption for both Ni and Cr adsorptions on SBAC followed Pseudo second order kinetic model.