Ladoke Akintola University of Technology
Ogbomosho, Nigeria

Ladoke Akintola University of Technology is a technology university in Ogbomosho, Oyo State, Nigeria. The university enrolls 25,000 students and employs more than 3,000 people. Wikipedia.

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Olajire A.A.,Ladoke Akintola University of Technology
Greenhouse Gases: Science and Technology | Year: 2017

The ever-increasing demand for nanostructured composite materials and sustainable processes for next generation CO2 capture technologies has necessitated the need to develop novel and cost-effective synthetic routes for CO2 adsorbents based on amine and ionic liquid functionalized porous adsorbent materials with improved physico-chemical properties. The most obvious option is modification of the synthesized porous adsorbent materials by the incorporation of organic functional molecules into the pore structures of support materials, giving place to hybrid materials that combine the properties of both composites. These hybrid materials will be of great potential for practical applications, especially for post-combustion CO2 capture, owing to the increase in CO2 capturing ability and selectivity to CO2 compared to other gases in the flue gas stream. This paper reviews the diverse synthesis routes of bare porous materials and rich functionalities of porous adsorbent materials which will allow further post-modification to improve their performance in CO2 capture and increase their CO2/N2 and CO2/CH4 selectivity ratios. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

Owing to the inefficiency of the conventional primary and secondary recovery methods to yield above 20-40% of the OOIP (original oil in place) as incremental oil, the need for EOR (Enhanced Oil Recovery) techniques to recover a higher proportion of the OOIP has become imperative. ASP (Alkaline/Surfactant/Polymer) is one of such techniques that has proven successful due to its ability to improve displacement and sweep efficiency. Alkaline-surfactant-polymer (ASP) flooding is a combination process in which alkali, surfactant and polymer are injected at the same slug. Because of the synergy of these three components, ASP is widely practiced in both pilot and field operations with the objective of achieving optimum chemistry at large injection volumes for minimum cost. Despite its popularity as a potentially cost-effective chemical flooding method, it is not without its limitations. This paper therefore focuses on the reviews of the application of ASP flooding process in oil recovery in the petroleum industry and its limitations in maximizing oil recovery from onshore and offshore reservoirs. Also discussed are technical solutions to some of these challenges. © 2014 Elsevier Ltd.

Agboola D.,Ladoke Akintola University of Technology
Chinese Physics Letters | Year: 2010

An approximate solution of the D-dimensional Schrödinger equation with the modified Pöschl-Teller potential is obtained with an approximation of the centrifugal term. Solution to the corresponding hyper-radial equation is given using the conventional Nikiforov-Uvarov method. The normalization constants for the Pöschl-Teller potential are also computed. The expectation values of (r-2) and (V(r)) are also obtained using the Feynman-Hellmann theorem. © 2010 Chinese Physical Society and IOP Publishing Ltd.

Olajire A.A.,Ladoke Akintola University of Technology
Journal of CO2 Utilization | Year: 2013

Complete oxidation or combustion of any carbon-based organic matter produces CO2, which is known to cause global warming and climate changes. To mitigate the concentration of CO2 in the atmosphere various strategies have been implemented such as separation, storage, and valorization of CO2. The focus of this review was on the catalytic processes of the chemistries involved in the conversion of CO2 into value-added products. The various valorization technologies which include conversion of CO2 into fuel, valorization of CO2 as a feedstock for chemicals were discussed. Also, an overview regarding the challenges and opportunities for future research in CO2 valorization was provided. © 2012 Elsevier Ltd. All rights reserved.

Olajire A.A.,Ladoke Akintola University of Technology
Energy | Year: 2010

Carbon capture from point source emissions has been recognized as one of several strategies necessary for mitigating unfettered release of greenhouse gases (GHGs) into the atmosphere. To keep GHGs at manageable levels, large decreases in CO2 emissions through capturing and separation will be required. This article reviews the possible CO2 capture and separation technologies for end-of-pipe applications. The three main CO2 capture technologies discussed include post-combustion, pre-combustion and oxyfuel combustion techniques. Various separation techniques, such as chemical absorption, physical absorption, physical adsorption, cryogenics, membrane technology, membranes in conjunction with chemical absorption and chemical-looping combustion (CLC) are also thoroughly discussed. Future directions are suggested for application by oil and gas industry. Sequestration methods, such as geological, mineral carbonation techniques, and ocean dump are not covered in this review. © 2010 Elsevier Ltd. All rights reserved.

Olajire A.A.,Ladoke Akintola University of Technology
Journal of Cleaner Production | Year: 2012

The brewing industry is one of the largest industrial users of water. In spite of significant technological improvements over the last 20 years, energy consumption, water consumption, wastewater, solid waste and by-products and emissions to air remain major environmental challenges in the brewing industry. This article reviews some of these challenges with a focus on key issues: water consumption and waste generation, energy efficiency, emission management, environmental impact of brewing process and best environmental management practices which do not compromise quality of beer. The review is meant to create an awareness of the impact of beer production on the environment and of, practices to reduce environmental impact. © 2012 Elsevier Ltd. All rights reserved.

Olajire A.A.,Ladoke Akintola University of Technology
Journal of Petroleum Science and Engineering | Year: 2013

Mineral carbonation technology (MCT) is a process whereby CO2 is chemically reacted with calcium- and/or magnesium-containing minerals to form stable carbonate materials which do not incur any long-term liability or monitoring commitments. Mineral carbonation is a potentially attractive sequestration technology for the permanent and safe storage of CO2. Vast amounts of magnesium silicate minerals exist worldwide that may be carbonated, with magnesium carbonate as stable and environmentally harmless product. In this review, a number of processes under development, such as the Åbo Akademi University (ÅA) process routes, the CO2 Energy Reactor©, and the chemical and biological catalytic enhancement as new carbon capture and sequestration (CCS) technology are discussed. The key factors of the mineral CO2 sequestration process are identified, their influence on the carbonation process and environmental impact of the reaction products with regard to their possible beneficial utilization are critically evaluated. Chemistry and comparative analysis of residues and ores carbonation processes, as well as cost and gap analyses of this technology are discussed. © 2013 Elsevier B.V.

Adejuyitan J.A.,Ladoke Akintola University of Technology
American Journal of Food Technology | Year: 2011

The search for lesser known and underutilized crops, many of which are potentially valuable as human and animal foods has been intensified to maintain a balance between population growth and agricultural productivity, particularly in the tropical and sub-tropical areas of the world. Tigernut (Cyperus esculentus) is an underutilized crop of the family Cyperaceae which produces rhizomes from the base and tubers that are somewhat spherical. Many authors have reported the nutritional value of tigernut. Tigernut produces high quality oil about 25.5% of its content and protein about 8% of the nut. The nut is high in oil content and the oil was implicated as lauric acid grade oil, non acidic stable and very low unsaturated. The nuts were valued for their nutritious starch content, dietary fibre and carbohydrate. The nut is also very rich in mineral content (Sodium, Calcium, Potassium, Magnessium, Zinc and traces of Copper. Its tubers are also said to be aphrodisiac, carminative, diuretic, emmanogogue, stimulant and tonic. Tigernut has also been reported to be used in the treatment of flatulence, indigestion, diarrhoea, dysentery and excessive thirst. In addition, tigernut has been demonstrated to contain higher essential amino acids than those proposed in the protein standard for satisfying adult needs. There is the need for increased utilization and awareness about its health benefits. © 2011 Academic Journals Inc.

Egbewale B.E.,Ladoke Akintola University of Technology
Journal of Pharmacy and Pharmaceutical Sciences | Year: 2014

Purpose: An allocation strategy that allows for chance placement of participants to study groups is crucial to the experimental nature of randomised controlled trials. Following decades of the discovery of randomisation considerable erroneous opinion and misrepresentations of its concept both in principle and practice still exists. In some circles, opinions are also divided on the strength and weaknesses of each of the random allocation strategies. This review provides an update on various random allocation techniques so as to correct existing misconceptions on this all important procedure. Methods: This is a review of literatures published in the Pubmed database on concepts of common allocation techniques used in controlled clinical trials. Results: Allocation methods that use; case record number, date of birth, date of presentation, haphazard or alternating assignment are non-random allocation techniques and should not be confused as random methods. Four main random allocation techniques were identified. Minimisation procedure though not fully a random technique, however, proffers solution to the limitations of stratification at balancing for multiple prognostic factors, as the procedure makes treatment groups similar in several important features even in small sample trials. Conclusions: Even though generation of allocation sequence by simple randomisation procedure is easily facilitated, a major drawback of the technique is that treatment groups can by chance end up being dissimilar both in size and composition of prognostic factors. More complex allocation techniques that yield more comparable treatment groups also have certain drawbacks. However, it is important that whichever allocation technique is employed, unpredictability of random assignment should not be compromised.

Tunde-Akintunde T.Y.,Ladoke Akintola University of Technology
Renewable Energy | Year: 2011

The drying characteristics for chilli pepper using sun and solar drying were investigated. Chilli pepper was pretreated by water and steam blanching and by soaking in osmotic solutions of 60 and 70° brix. Untreated chilli pepper was taken as a control. The pretreated chilli pepper dried faster than untreated chilli pepper while the drying of both samples occurred in falling rate period. Four thin-layer drying models (Newton, Henderson and Pabis, Logarithmic and Page) were fitted to the experimental data to select a suitable drying equation. The Page model was found to best describe the drying behavior of chilli pepper for sun and solar drying. © 2011 Elsevier Ltd.

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