Browsing by Author "Tijani, J.O"
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item OPTIMIZATION OF NICKEL (II) AND CHROMIUM (III) REMOVAL FROM CONTAMINATED WATER USING SORGHUM BICOLOR(Faculty of Technology, University of Nigerian, Nsuka, Enugu State, 2017-07) Adewoye, L.T; Mustapha, S.I; Adeniyi, A.G; Tijani, J.O; Amoloye, M.A; Ayinde, L.JA 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.Item Optimization of the Preparation Conditions for Activated Carbon from Locust Bean Pod (Parkia biglobosa) Using Factorial Design Approach(Department of Civil Engineering, University of Ilorin, Kwara State., 2018) Eletta, O.A.A; Mustapha, S.I; Tijani, J.O; Adewoye, L.T; Mohammed, I.AThis study focused on the optimization of the preparation parameters (impregnation concentration, activation temperature and activation time) on the yield and adsorption potential of activated carbon (AC) prepared from Locust bean pod (Parkia biglobosa) using the chemical activation method based on factorial design. The two linear regression models developed from the factorial experimental design using Design Expert Software – 6.0.8 was used to determine the optimum production conditions required to provide a compromise between the AC yield and methylene blue (MB) removal efficiency from aqueous solution. The results demonstrated maximum AC yield of 41.6% and MB removal efficiency of 95.4% under the following optimum preparation conditions; H3PO4 impregnation concentration (60 %), activation temperature (444.4 oC) and activation time (30 min). This study showed that the experimental values obtained were in good agreement with the values predicted from the models under the applied conditions.Item Optimization of the Preparation Conditions for Activated Carbon from Locust Bean Pod (Parkia biglobosa) Using Factorial Design Approach(2018) Eletta, O.A; Mustapha, S.I; Tijani, J.O; Adewoye, L.T; Mohammed, I.AThis study focused on the optimization of the preparation parameters (impregnation concentration, activation temperature and activation time) on the yield and adsorption potential of activated carbon (AC) prepared from Locust bean pod (Parkia biglobosa) using the chemical activation method based on factorial design. The two linear regression models developed from the factorial experimental design using Design Expert Software – 6.0.8 was used to determine the optimum production conditions required to provide a compromise between the AC yield and methylene blue (MB) removal efficiency from aqueous solution. The results demonstrated maximum AC yield of 41.6% and MB removal efficiency of 95.4% under the following optimum preparation conditions; H3PO4 impregnation concentration (60 %), activation temperature (444.4 oC) and activation time (30 min). This study showed that the experimental values obtained were in good agreement with the values predicted from the models under the applied conditions.