Browsing by Author "Aderibigbe, F.A"

Now showing 1 - 5 of 5
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    Improved Brewery Wastes Management Using Life Cycle Analysis
    (UNIOSUN Journal of Engineering and Environmental Sciences,, 2023-03) Adejumo, A.L.; Azeez, L; Sonibare, J.A; Aderibigbe, F.A; Akeredolu, F.A
    Abstract: Brewery is a major industrial activity in Nigeria from which wastes are generated. The present global attention on effective wastes management in the sector has compelled the country to embrace aggressive research methods on this essential subject matter. This has therefore been the impetus for this study to use the Cradle-to-Grave section of Life cycle analysis in the ISO 14040 for investigation of improved wastes management in a Nigerian brewery. In the study, emissions associated with brewery were identified and quantified to determine the releases into air, water and land. Materials use, use of energy, wastes and by-products generation as well as physical size from the sector were also determined for wastes management. The study shows that intensiveness of energy and water consumption in brewery industry during productions could cause large emissions that may have negative effects on the environment. Agreement of the material inputs and outputs in the study at about 99.6% level indicates that the adopted method can be of great help in solving wastes management problems in the brewery.
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    Kinetic Study of Jatropha Curcas Oil Biodiesel Using Coupled Bentonite Clay and Activated Biomass Catalyst
    (Nigeria Journal of Engineering Science Research (NIJESR)., 2023-09) Aderibigbe, F.A; Shiru, S; Saka, H.B; Mustapha, S.I.; Mohammed, I.A.; Babatunde, E.O.; Adejumo, A.L
    Abstract: This study investigated the kinetic study of biodiesel from non-edible Jatropha curcas oil using bentonite clay supported potash from cocoa pod husk as a catalyst in a heterogeneous catalysis process. The coupled activated biomass (potash) and bentonite clay support was effective at potash to clay composition of 33.33 wt% and 66.67 wt% (1:2). The coupling was effective enough to prevent the formation of soap and interference of water molecules during the reaction. Further characterizations performed showed the presence of active sites on the catalyst. The highest yield of biodiesel (96.2%) for this study was attained at a temperature of 70 ℃, 10:1 methanol/oil ratio, 10 wt% catalyst loading and time of 75 min. A kinetic study of the alcoholysis was performed to define the mechanism of reaction. A pseudo-first-order kinetic reaction was established and the activation energy and frequency factor obtained were 22.03 KJ/mol and 17.28 s-1 respectively.
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    OPTIMIZED PRODUCTION OF BIOETHANOL BY FERMENTATION OF ACID HYDROLYZED-CORN STOVER EMPLOYING SACCHAROMYCES CEREVISIAE YEAST STRAIN
    (LAUTECH Journal of Engineering and Technology, 2021-08-15) Aderibigbe, F.A
    In this study, corn stover was converted into ethanol using a locally-fabricated bioreactor and process conditions were optimized. The corn stover biomass used as substrate was milled, screened to 200 μm and hydrolyzed with between 0.1-0.5 M HCl. The hydrolysis experiment was carried out for substrate concentrations of 20, 25, and 30% (w/v) of milled bagasse prepared in a 1000 mL glass jar containing distilled water. For each substrate concentration, the time, temperature, and acid concentration were varied between 10 – 60 min., 80 – 97 °C, and 0.1 – 0.5 M, respectively to find the optimum glucose yield. Glucose concentration in the optimum hydrolysate sample was determined using glucose oxidase method. Fermentation experiment was conducted in the bioreactor using 700 ml of the hydrolysate and Saccharomyces cerevisiae supplemented with minerals to yield ethanol of 21.47 g/L after 48 hours. A linear regression model developed after analysis of variance was able to predict the concentration of glucose produced during the acid hydrolysis, and the optimum ethanol yield of 21.47 g/L compares well with previous reported yield values found in literature.
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    PREPARATION OF YEAST (SACCHAROMYCES CEREVISIAE) BIOMASS FROM SUGARCANE BAGASSE
    (Published by the Faculty of Engineering, University of Maiduguri, Maiduguri, Nigeria., 2019-08-08) Aderibigbe, F.A
    In this study, the pretreatment by milling, dilute-acid hydrolysis of sugarcane bagasse, and subsequent fermentation of its glucose product was performed to investigate the effects of process conditions on the production of Saccharomyces cerevisiae. The hydrolysis was carried out using HCl at three substrate concentrations of 20, 25, and 30% (w/v) of bagasse to distilled water. Hydrolysis parameters (time, acid concentration, and temperature) were varied for each case of substrate concentration in full factorial experiments, and an optimum glucose yield of 1.907 g/L was obtained with the 20% (w/v) substrate concentration, at conditions of 10 min time, 0.5 M acid concentration, and 8 0°C temperature. Thereafter, fermentation experiment was performed with S. cerevisiae in the product of hydrolysis. An optimum ca. 207 yeast number of colonies (yield: 20, 700, 000 cfu/ml) was achieved in 40 h, and the growth of S. cerevisiae was governed by the kinetic equation, ln Xt = 8.4338 + 0.2943t.
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    Removal of Lead and Chromium from Aqueous Solution onto Flamboyant (Delonix regia) Pod Activated Carbon
    (Faculty of Engineering and Technology, University of Ilorin, Kwara State., 2017-12) Mustapha, S.I; Adewoye, L.T; Aderibigbe, F.A; Alhaji, M.H; Adekola, M.I; Tijani, I.A
    The contamination of water by potentially toxic elements is considered a global problem. It calls for a safe, economic and technological approach in order to curb and prevent the devastating effect of the menace on both human and the aquatic life. In the light of this background, the adsorption potential of flamboyant pod activated carbon (FPAC) for the removal of chromium and lead from aqueous solution was studied. The effect of contact time, pH, initial concentration as well as adsorbent dosage on the removal efficiency of both metal ions was investigated via batch adsorption. Characterization of the FPAC adsorbent was done using Brunaur Emmett Teller and Fourier transform infrared spectroscopy. The maximum adsorption capacity Qe was found to be 34.48 and 16.13 mg/g for Pb (II) and Cr (VI), respectively. The Langmuir isotherm model showed a better fit to the equilibrium data than the Freundlich isotherm model. The mechanism of adsorption for both metal ions onto the FPAC agrees well with pseudo second order kinetic model. The results showed that FPAC has excellent adsorption properties and thus can be used as an effective low-cost adsorbent for the removal of lead and chromium ions from aqueous solution.