Browsing by Author "Adebayo, S. A."
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Item Capacity buiding needs of fish farmers on value addition innitiatives in Kogi State, northcentral Nigeria.(Kebbi State University of Science and Technology, Aliero Nigeria., 2015) Olorunfemi, O. D.; Adekunle, O. A.; Adebayo, S. A.; Falola, A.Item Chemical Hydration by Acid Leaching of a Brand of Cement in Nigerian Market(2011) Baba, A.A.; Adekola, F.A.; Shobande, O.E.; Ghosh, M. K.; Ayinla, K.I; Adebayo, S. A.In this wok, experiment on chemical hydration by acid leaching from a brand of cement in Nigerian market has been studied the physic-chemical characterization of the sample by inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and X-ray diffraction (XRD) has been examined. The influence of acid concentration and system temperature on the dissolution rates has been investigated. The dissolution rates are greatly influenced by acid concentration and reaction temperature. The dissolution investigations gave rise to activation energy value of 26.3 kJ/mol, which affirmed the diffusion reaction mechanism. Also, about 4.13 s-1 and 0.98 were obtained as the system’s Arrhenius constant and reaction order for the dissolution process, respectively.Item Determinants of value addition to cassava in Kwara State, Nigeria.(University of Mauritius, Réduit, Mauritius., 2016) Falola, A.; Oyinbo, O.; Adebayo, S. A.; Jonathan, A.; Jimoh, J. O.This study focuses on factors influencing value addition to cassava by farming households in Kwara State, Nigeria. The study emanated from the need to harness the benefits of value addition to cassava in Nigeria, being the world’s largest producer of the crop. Data were collected from 160 cassava farming households through a combination of purposive and random sampling techniques. The data were analyzed with descriptive statistics and two-stage Heckman model. Results showed that the farmers were still in their active age, married with an average household size of seven persons. Those who engaged in value addition among the farmers were 37.5%. The products of the value-adders were cassava flakes, flour, cassava paste, cassava chips and starch. Decision to add value to cassava by the farmers was significantly influenced by availability of processing equipment, cassava output, farm size, age and access to extension services. The study further revealed that the extent to which value addition is carried out is influenced by availability of processing equipment, being a female, age and hours spent on non-farm activities. The study therefore recommends encouraging the youths to engage in cassava farming, providing farmers with processing equipment, overhauling extension services and putting measures that will improve farmers’ output in place.Item Effect of Substitution of Natural Gypsum with Synthetic Gypsum Produced from Cement Kiln Dust on the Physico-Chemical Properties of Ordinary Portland Cement(2009) Adebayo, S. A.; Abdulrahman, W.F.; Birnin-Yauri, U.A.This study was designed to investigate the effect of using synthetic gypsum on the properties of cement instead of the conventional natural gypsum being used by cement industries. Synthetic gypsum which was chemically produced from precipitation reaction between cement kiln dust and sulfuric acid was ground together with clinker at %(w/w) using laboratory-scale ball mill to produce ordinary Portland Cement. The chemical and physical properties of the cement were compared with similar cement produced with natural gypsum. The results showed lightly higher figures for most of the parameters and increased mechanical strength development over a 28-day period for cement with synthetic gypsum compared with that of natural gypsum.Item Effect of Waste Discharges on the Water Quality of Asa River in Ilorin, Nigeria(Faculty of Pure and Applied Sciences, LAUTECH., 2005) Adebayo, S. A.; Adediran, G.OSection of Asa river along its course in Ilorin, Kwara State, Nigeria, were studied over a period of 12 months (covering the raining and dry seasons) to determine the effect of various municipal and industrial waste discharges on the water quality of the river. Water samples were collected from four different points along the course. Sampling and analysis were carried out at monthly intervals between July 2003 and June 2004. The following parameters were monitored at each point in order to assess the water quality of Asa river: pH, alkalinity, colour, turbidity, conductance, dissolved and suspended solids, total hardness, levels of magnesium, sodium, potassium, calcium, total iron, manganese, lead, copper, nitrate, sulphate, chloride, ammonia, Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD5) and carbon dioxide (CO2). The results showed that the level of pollution varied depending on the season and that the water quality was acceptable before entering the town and becomes unacceptable as it flows across the heart of the town indicating significant pollution from both industrial and municipal waste discharges.Item INTERNATIONAL JOURNAL OF PHYTOFUELS AND ALLIED SCIENCES(The Society for the Conservation of Phytofuels and Sciences, 2014-09-01) Nwosu, F. O.; Ameen, O. M.; Salami, A. A.; Adebayo, S. A.This study investigates the effect of transesterification process conditions like temperature, concentration, time, amount of catalysts on the yield of biodiesel from Jatropha curcas oil in order to establish optimum conditions for production of highest yield. The kinetics orders, rate of production of biodiesel from Jathropha oil as well as some thermodynamic parameters were investigated. From the results obtained, a mass of 0.60 g (1.2% w/v) KOH was found to be optimum amount of catalyst as it gave the best yield. Optimum reaction conditions for methanolysis of Jatropha oil was achieved at methanol to oil molar ratio of 6:1, reaction temperature of 55°C, reaction time of 45 min, and stirring rate of 250 rpm. It was found that the kinetics data obtained for the transestrification process for production of biodiesel using Jatropha curcas oil fitted well into pseudo second order kinetics and its rate constant obtained is 0.0113 %/ ml min-1. The enthalpy change obtained for the process revealed that ΔH value of 6.53 KJmol-1K-1 supported endothermic reaction, and positive entropy change (ΔS) was estimated to be 0.614 JK-1 for 318 K and 0.248 JK-1 for 358 K leading to increase in the degree of disorderliness. Gibb’s Free energy change, ΔG was found to be spontaneous at 45 and 85oC while it became non-spontaneous at other temperatures. Thus, it could be concluded that the conversion of Jatropha oil to biodiesel holds a good promise in supplementary energy source for both industrial and domestic purposes.Item Levels of ammonia-nitrogen, carbo dioxide, dissolved oxygen, and biochemical oxygen demand in Asa river, Ilorin, Nigeria(Faculty of Pure and Applied Sciences, LAUTECH., 2009) Adebayo, S. A.; Usman, L.AThe impact of municipal and industrial waste discharges into Asa river in Ilorin, Kwara State, Nigeri was investigated. Section of the river along its course within the metropolis were studied by collecting water samples from five different points; Asa Dam, Unity Bridge, Station Bridge, Amilengbe Bridge and Kangile Village. Sample analyses were carried out at monthly interval (April 2008 to March 2009) for a period of twelve months covering both the rainy and dry seasons. Concentrations of ammonia-nitrogen (NH3 - N), carbon dioxide (CO2), dissolved oxygen (DO) and biochemical oxygen demand (BOD5) were determined at each sampling point as measure of organic pollution in the river. The results indicate that the quality of Asa river water was acceptable before entering and after leaving the town but pollution sets in as the river flows through the town indication that the river receives significant inputs of wastes from both domestic and industrial sources. Also, the level of pollution was found to be season dependent. Key: Pollution, river, waste, domestic, industrialItem Rapid Determination Of CaO and SO3 in Loose Powder Cement by Energy Dispersive X-Ray Fluorescence (EDXRF) Technique(2006) Adebayo, S. A.; Mustapha, L.G.; Kareem, S.A.Percentage CaO and SO3 in loose powder cement were determined rapidly using the EDXRF spectrometer. Sample particle size was further reduced by grinding in a rotating disc gyratory mill for a period of 120 seconds. To avoid the absorption of secondary x-rays from the low atomic number elements (Ca and S), measurement was carried out in helium atmosphere instead of air. The results showed a high degree of accuracy and precision technically desired for process control in a cement factory. The method was found to be more effective (less time consuming and cost saving) compared to the pressed pellet or the fused bead methods employed on the EDXRF spectrometry and the spectrophotometric and gravimetric methods often used by the industry.