oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2018 ( 11 )

2017 ( 18 )

2016 ( 16 )

2015 ( 229 )

自定义范围…

匹配条件: “ Joel Ademiluyi” ,找到相关结果约4387条。
列表显示的所有文章,均可免费获取
第1页/共4387条
每页显示
Comparing Model and Experimental Results of the Volume of Filtrate during Sludge Dewatering  [PDF]
Sheikh Yusuf, Joel Ademiluyi
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104650
Abstract:
The results of the experiment of dewatering analysis carried out on a municipal sludge were recorded. Similarly, analytical mathematics was used to develop an equation to calculate volume of filtrate. The two results were plotted in graphs and comparisons were made. The results show very close relationships between the two results. In fact in most cases the two results were almost overlapping. For example after 3, 6, 9, 12, 15 hours, the volumes of filtrates are: 0.0037 m3 (model), 0.004 m3 (experiment), 0.005 (model), 0.0055 (experiment), 0.006 (model), 0.0067 (experiment), 0.0066 (model), 0.0065 (experiment) and 0.0065 (model), 0.0064 (experiment). This has shown that the experiment was carried out very well and that, mathematical equations can be used directly in order to calculate the volume of filtrate and the values can be nearly the same with model results.
Cake Filtration Equation Using tannθ Reduction Method  [PDF]
Obiajulu E. Udegbunam, Joel O. Ademiluyi
Journal of Water Resource and Protection (JWARP) , 2017, DOI: 10.4236/jwarp.2017.97057
Abstract: This study was completed by an extensive mathematical analysis. New equation to sludge filtration processes has been proposed for use in routine laboratory. The equation has been suggested to replace Ademiluyi’s cake filtration equation in view of the limitations of the latter. The new equation can be used for sludges whose compressibility factor is more than one but Ademiluyi’s cake filtration equation can only be used for sludges whose compressibility coefficient is less than one. The new sludge filtration equation was derived using tannθ reduction method. The generalized equation thus obtained resembles Ademiluyi’s equation in the mode of parameter combination except the presence of summation notation in the new equation.
Modeling break time on gravel pack fluid at different breaker concentrations and temperatures
Joel O. F.,Ademiluyi F. T.,Iyalla M. C.
Journal of Engineering and Applied Sciences , 2009,
Abstract: The effect of gel breakers on 60lbs/Mgals gravel pack fluid at different temperatures and concentrations was investigated. Tests at temperatures of 190oF, 210oF and 230oF with high temperature (HT) breaker of concentrations 5.0gal/Mgal, 10gal/Mgal and 15gal/Mgal, respectively were also investigated. The study revealed that break time is a function of temperature and concentration, at a higher temperature and concentration, respectively, gel break is faster and vice-versa. Model coefficients were obtained using DATA FIT engineering software and results indicated that Exponential model described best the variation of break time with breaker concentration and temperature. Model which predicts break time at any breaker concentration and Bottom Hole Temperature was developed. A model equation was developed for different temperatures and concentrations. Results calculated from the model equation showed a good agreement with experimental values with less than 10% deviation. This will help predict gel break time at different concentrations and temperatures thereby saving time and rigor associated with actual laboratory pilot test.
Investigation of local polymer (cassava starches) as a substitute for imported sample in viscosity and fluid loss control of water based drilling mud
Ademiluyi Taiwo,Joel O. F.,Amuda A. Kazeem
Journal of Engineering and Applied Sciences , 2011,
Abstract: Comparative study of local polymer (cassava) with an imported type in controlling viscosity and fluid loss in water-based mud was investigated in this study. Five different cassava starches were tested as viscosifiers and fluid loss control additives in water based mud and compared with Barazan D, an imported sample. Experimental results indicated that at same concentration, the imported sample had higher rheological properties compared with the local samples. However, some of the newly developed local starch products (with high amylose content and high water absorption capacity) have similar or better filtration control properties than the imported sample. Although the viscosity of the drilling fluid produced from the local starches were lower than that of the imported type, with proper quality control efforts of the local samples, they could be used as a substitute for imported grade for exploration and exploitation of oil and gas in Nigeria. It is also hoped that this work will open new market for non-food use of starches from cassava and thus expected to provide economic benefit to Nigerian farmers and a way forward to actualize vision 20-2020 agenda.
Fuel gases from pyrolysis of waste Polyethylene sachets
T Ademiluyi, TA Adebayo
Journal of Applied Sciences and Environmental Management , 2007,
Abstract: Evaluation of fuel gases produced from pyrolysis of waste polyethylene was carried out. Waste polyethylene (pure water sachets) was pyrolysed at low and high temperatures. Pyrolysis of the waste for 300secs at temperatures of 250C -1400C produced 2.53% ethane, 21.67% propane and 75.82 % propylene. The volume of the gaseous products at this low temperature is far less than the initial volume of the waste resulting into over 80% reduction in the volume of waste generated by discarding the polyethylene waste. Fresh samples of the waste were pyrolysed at higher temperature range from 500C – 2500C and cooled in a condenser. The non-condensable gas produced were collected and analyzed with Shimadzu gas chromatography. The analysis shows that C1 – C6, and other alkenes and isoparaffins (18 ethylene monomers) were produced. The gaseous products being 75.82% propylene at low temperatures and 48.6% (normal and Iso) butane at higher temperatures. The flame test carried out shows that the gaseous products burns with a blue flame at lower temperature range. Above 3000C the flame becomes more luminous and production of fuel gases stops at 5500C. Production of fuel oil from waste polyethylene led to production of large volume of gaseous products, some of which are non-condensable at room temperature. The gaseous products can serve as feedstock and as fuel gas
Preliminary evaluation of fuel oil produced from pyrolysis of low density polyethylene water- sachet wastes
T Ademiluyi, C Akpan
Journal of Applied Sciences and Environmental Management , 2007,
Abstract: Potentials of waste water sachets for the production of fuel oil were evaluated. In this work, waste polyethylene (pure water sachets) was pyrolysed at different temperatures: 130 - 190oC, 200 -300oC, and 300 - 450oC using a batch reactor. Below 200oC, 78% of the waste was converted to wax, 18% to fuel oil and 3% to noncondensable gases. The wax content decreases as temperature increases .The highest quantity of fuel oil was produced between 300oC - 450oC. The pyrolysis was found to increase with temperature. 86.5% of fuel oil was recovered from waste polyethylene at a reaction time of 135 minutes by pyrolysing up to 450oC. The chromatographic analysis shows that the fuel oil produced (up to 450oC) contains paraffins, isoparaffins, olefins, naphthalenes, aromatics and polyaromatics ranging from C3 – C38. .. It could be refined further to produce domestic kerosene and gasoline. The physical and structural properties of the fuel oil produced compared favorably with that of Aviation fuel JP-4 (a wide-cut US Air force fuel). Presently African countries are importing aviation fuels. The fuel oil produced from the pyrolysis of waste water sachets can therefore be used in place of JP–4, providing the aviation industry with a cheaper fuel oil from a cheaper source (waste water sachets) than crude oil. The pyrolysis of these waste water sachets will also enhance proper waste management of the menace created by the usage of these waste polyethylene sachets in our society.
Preliminary evaluation of fuel oil produced from pyrolysis of waste water sachets
T Ademiluyi, C Akpan
Journal of Applied Sciences and Environmental Management , 2007,
Abstract: Potentials of waste water sachets for the production of fuel oil were evaluated. In this work, waste polyethylene (pure water sachets) was pyrolysed at different temperatures: 130 - 190oC, 200 -300oC, and 300 - 450oC using a batch reactor. Below 200oC, 78% of the waste was converted to wax, 18% to fuel oil and 3% to noncondensable gases. The wax content decreases as temperature increases .The highest quantity of fuel oil was produced between 300oC - 450oC. The pyrolysis was found to increase with temperature. 86.5% of fuel oil was recovered from waste polyethylene at a reaction time of 135 minutes by pyrolysing up to 450oC. The chromatographic analysis shows that the fuel oil produced (up to 450oC) contains paraffins, isoparaffins, olefins, naphthalenes, aromatics and polyaromatics ranging from C3 – C38. .. It could be refined further to produce domestic kerosene and gasoline. The physical and structural properties of the fuel oil produced compared favorably with that of Aviation fuel JP-4 (a wide-cut US Air force fuel). Presently African countries are importing aviation fuels. The fuel oil produced from the pyrolysis of waste water sachets can therefore be used in place of JP–4, providing the aviation industry with a cheaper fuel oil from a cheaper source (waste water sachets) than crude oil. The pyrolysis of these waste water sachets will also enhance proper waste management of the menace created by the usage of these waste polyethylene sachets in our society.
Modeling the Physical Properties of Popcorn Varieties as a Function of Kernel Moisture Content
Falilat Taiwo ADEMILUYI,Koyejo ODUOLA
Leonardo Electronic Journal of Practices and Technologies , 2011,
Abstract: The physical properties such as the axial dimensions (length, width, thickness), geometric mean diameter, thousand kernel weight, shape characteristics (sphericity, kernel volume, kernel surface area), bulk density, particle or kernel density, as well as porosity have been evaluated as a function of kernel moisture content for pin and deep yellow varieties of Nigerian popcorn kernels. It has been observed that the length, width, thickness as well as the thousand kernel weight increase with increasing moisture content for both varieties under investigation in the moisture range 11-17% (wet basis.), while the bulk and particle densities together with the kernel porosity have been found to decrease with increasing moisture content. These physical properties vs moisture content dependencies have been fitted to linear, polynomial and other non-linear equations and the empirical constants determined for each case. Regression analyses have revealed that the third-order polynomial and quadratic functions more adequately describe the observed dependencies than the linear equation in most cases, based on the resulting correlation coefficients and standard errors.
Solubility, emulsion and foraming properties of coconut (Cocos Nucifera) proteins concentrate.
M Horsfall, SC Achinewhu, T Ademiluyi
African Journal of Food, Agriculture, Nutrition and Development , 2008,
Abstract: Full-fat and defatted coconut protein concentrates containing 27.80% and 30.20% proteins (on a dry weight basis), respectively, were prepared from freeze-dried coconut meal samples. Selected functional properties such as: nitrogen solubility, emulsion and foaming properties were determined. Nitrogen solubility was measured in the range of PH 2.0-12.0 in three dispersion media including water, 0.1M NaCl (low salt) and 1.0M NaCl (high salt). The emulsion properties of the protein concentrates were measured at varying PH values (2.0-10.0) and sample concentrations. Foaming properties were determined using same parameters including the use of additives (NaCl solutions and carbohydrates). Below and above the isoelectric PH (4.0-5.0) the nitrogen solubility increased. The coconut protein samples showed a fairly high solubility (more than 54.0% and 53.0%) for full-fat coconut protein concentrate (FFC-PC) and defatted coconut protein concentrate (DFC-PC), respectively at pH 2.0. FFC-PC sample had maximum solubility (more than 73%) at 10.5 and minimum solubility (13.2%) at PH 4.0. On the alkaline PH scale, FFC-PC sample had maximum solubility of more than 43% at PH 10.5 in high salt (1.0M NaCl) solution while DFC-PC sample had maximum solubility of 50.2% in 1.0M NaCl solution and more than 80% in low salt (0.1M NaCl) dispersion medium. The emulsions prepared had good stability. A maximum of 92.5ml/g protein of emulsification capacity, at PH 10.0 and minimum of 45.3ml/g protein at PH 4.0 were obtained for FFC-PC while DFC-PC had a maximum EC of 86.4ml/g protein. FFC-PC samples produced significantly (P≤0.05) higher emulsion capacities than DFC-PC samples at all the dispersion PH and sample concentrations investigated. The FFC-PC samples had a significantly low foaming capacity than the DFC-PC samples at all the tested PH values. Similarly, the foaming capacities of FFC-PC and DFC-PC decreased with increasing PH of the sample medium. Both FFC-PC and DFC-PC foams collapsed completely, after 3hr standing at ambient temperature. Foaming was concentration dependent. The FFC-PC and DFC-PC foams increased sharply at 0.2% NaCl content of the sample slurries and progressed steadily to a peak of 92.0% and 113% in FFC-PC and DFC-PC samples respectively in 0.8% NaCl solution and then declined gradually with increased salt concentration. Addition of polymeric carbohydrates (sucrose, corn starch, gum acacia and pectins) significantly improved foaming properties of the protein concentrates but the foam stabilities were not significantly affected.
Adsorption and Treatment of Organic Contaminants using Activated Carbon from Waste Nigerian Bamboo.
FT Ademiluyi, SA Amadi, NJ Amakama
Journal of Applied Sciences and Environmental Management , 2009,
Abstract: The adsorption and treatment of organic contaminants using activated carbon from waste Nigerian bamboo was investigated. Waste Nigerian bamboo was carbonized at 400oC-500oC and activated with acid at 800oC to produce granular activated carbon (GAC). Adsorption of organics from the refinery waste on the activated carbon produced was examined at 28oC. The experimental batch equilibrium data was correlated by Freundlich and Langmuir isotherms. The adsorption data fitted well into the Freundlich isotherm. Breakthrough time of about 1.5 hours was observed for the fixed bed adsorption process. The organic concentration expressed as chemical oxygen demand (COD) was reduced from an initial value of 378 mg/l to 142 mg/l for the first hour, 143 mg/l for the second hour, 152 mg/l for the third and fourth hours, and 156 mg/l for the final hour., which also compare favorably with the refinery effluent specification of 150 mg/l Results from the study shows that waste Nigerian bamboo can be converted into high capacity adsorbent and used for the remediation of polluted industrial waste waters.
第1页/共4387条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.