College of Engineering

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Author: search.filters.author.Agboola Oluranti

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    Utilization of Bioresources: Towards Biomass Valorization for Biofuels
    (Bioresource Utilization and Management, 2021) Sanni Samuel Eshorame; Agboola Oluranti; Moses Emetere; Okoro Emeka; Adefila Sam Sunday; Sadiku Rotimi; Alaba Peter
    Biomass valorization has recently gained wide attention owing to the vast availability of wastes from which essential oils can be extracted, processed, and subsequently converted to energy utilities and value-added products by taking advantage of the free fatty acid contents of the parent bio-oils. The waste materials undergo a conversion process to give the prospective fuels. The two major final products of the conversion process are bioethanol and biodiesel. Recent findings have also indicated the usefulness of these products as intermediate products/raw materials for end products such as simple sugars or biolubes; this goes further to emphasize the huge potential in these substrates (agricultural wastes) when used as raw materials. In 252recent times, hydrogen from biomass is being sought as a means of energy to power cars, and this also brings to bear the need to underscore how far efforts have been made to introduce bioethanol-driven cars. Fossil fuels, besides being nonbiodegradable relative to bio-oils, are gradually being depleted, with no measures put in place for their replacement. This then suggests the need to look beyond the current situation for viable alternatives. This chapter provides background information on biofuels, their production processes, and their physicochemical characterization, application, and sustainability, since the world is like a vicious circle that currently tilts in the direction of "engineering for a sustainable world". Furthermore, the chapter unveils some gray areas of research that still remain untapped, thus opening up doors for revenue generation.
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    Surface effect of environmentally assisted corrosion growth of automotive welded steel performance
    (Materials Proceedings Volume 38, Part 5, 2021-03) Fayomi O. S. I.; Samuel Olusegun David; Mashilo Matsobane; Popoola Abimbola Patricia; Agboola Oluranti; Balasubramanian Dhinesh
    Failure of steel in automobile industries due to environmentally assisted medium in service is alarming. In this study an effort has been made to investigate critically the corrosion induced performances of automotive welded part. The experimental correlation on the effect of corrosive media (NaCl and HCl solutions) on the base metal, heat affected zone (HAZ) and weld metal formed were examined using linear potentiodynamic polarization technique. The hardness, microstructural and phase rationale of the studied joint was evaluated using, diamond base indenter, Scanning electron microscope and x-ray diffractograms respectively. The results revealed that the base metal has no detrimental phase transformation unlike the HAZ and the weld joint region. The hardness value of 185 HV welded joint was obtained compared to 235.95 HV of base region. The corrosion propagation in the 3.5NaCl and 1 M HCl shows that pitting deterioration occurs at the welded position in all case as a result of the shift in grain refinement and micro-straining during welding process.
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    Safety and Environmental Aspects of Cellulose Nanoparticles
    (Cellulose Nanoparticles: Chemistry and Fundamentals, 2021-06-01) Fasiku Victoria Oluwaseun; Agboola Oluranti; Owonubi Shesan John; Revaprasadu Neerish; Sadiku E. R.
    Nanoparticles made from cellulose are increasingly gaining attention in several fields for diverse applications, which can be attributed to their excellent properties. The physical, chemical, and mechanical properties of cellulosic nanomaterials are being studied to investigate their application in areas such as drug delivery, wound dressing, artificial tissues, and others. However, the safety and environmental aspects of cellulose nanoparticles (CNPs) are yet to be fully understood and established. The ambiguity surrounding their environmental health and safety remains a serious concern to the standards community. This chapter, therefore, provides information about the types of cellulose nanoparticles, and their various properties and the characterization techniques employed to provide useful information about their properties. It further proceeds to focus on the safety and environmental issues associated with cellulose nanoparticles and the handling practices which can be implemented to ensure maximum safety. This includes various safety techniques that have been developed as precautionary measures against the release and exposure of cellulose nanoparticles into the environment.
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    Separation processes for the treatment of industrial flue gases – Effective methods for global industrial air pollution control
    (RESEARCH ARTICLEVolume 10, Issue 11, 2024-06-15) Elehinafe Francis B.; Aondoakaa Ephraim A.; Akinyemi Akinnike F.; Agboola Oluranti; Okedere Oyetunji B.
    The treatment of flue gases has become a crucial area of interest with the increasing air emissions into the atmosphere from industries involved in combustion of fossil fuels in their operations. In essence, there is a critical need for effective methods of treatment more than ever. Treatment and separation are now a demand for the overall industrial operations to control the rate of flue gas emissions. The major culprit in this wise is power generating industry. The major associated air pollutants are carbon dioxide, sulfur oxides, trace metals, volatile organic compounds, particulate matters, and nitrogen oxides. However, the choice of technologies to be utilized requires more than just knowledge of the separation process, but also a good understanding of the properties of the pollutants. This review explored and evaluated the various separation processes and technologies for the treatment of industrial flue gases for the control of the associated air pollutants. It also analyzed the performance with references to cost and efficiency, the advantages and disadvantages, principles for selection, research direction, and/or potential opportunities in existing separation processes and technologies.
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    Overview on Advancement of Sustainable Heterogeneous Catalysts for the Production of Biodiesel
    (Bioenergy and Biochemical Processing Technologies, 2022-07) Efeovbokhan Vincent; Makinwa Tolu; Agboola Oluranti; Oladokun Olagoke
    Biodiesel has comparable properties to diesel fuel; hence, it becomes a promising substitute to diesel fuel. The development of exceedingly effective biocatalyst is a key prerequisite for the production of biofuels, most especially biodiesel. Heterogeneous catalysts are regarded to be very prospective for transesterification process in biodiesel production owing to their numerous advantages, which include separation of catalyst from reaction mixture with ease, separation from reaction mixture with ease, regeneration, decreased corrosion, decreased cost and environmental friendliness. Heterogeneous catalysts can substitute homogeneous catalysts in situations that limit their efficiency. Hence, synthesized sustainable catalysts are required for increasing process performance, reduction in energy cost and production of cleaner products like ultralow sulphur biodiesel. Here, we gave a brief review on the advancement in sustainable heterogeneous catalysts for biodiesel production.
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    Fabrication and Potential Applications of Nanoporous Membranes for Separation Processes
    (Environmental Nanotechnology Volume 5 (Springer, Cham), 2021-07-05) Agboola Oluranti; Popoola Patricia; Sadiku Rotimi; Sanni Samuel Eshorame; Babatunde Damilola Elizabeth; Ayoola Ayodeji; Abatan Olubunmi Grace
    Innovative membrane processes are considered a very important segment of controllable separation processes, such as water treatment, gas separation and organic purification. One of the challenges in membrane technology is the challenge of selecting and fabricating membrane material for excellent selectivity and good permeability for selected particle sizes. The utmost operational challenge perturbing the performance of membrane technology is membrane fouling which occur as a result of insoluble materials covering the membrane surface, leading to a reduction in water quality. Other factors perturbing the performance of membrane technology are energy usage and greenhouse emission. Furthermore, the necessity to react to climate change is another major challenge for membrane technology. An excellent membrane should have high stiffness in order to withstand high pressures applied, large surface area and micro- or nanopore structures for excellent selectivity and good permeability for selected particle sizes. The transport of ions and fluid at molecular level, controlled at the nanometer-scale using membranes provide substantial capacity for high selectivity and high fluxes. The potential applications of nanoporous membranes are strongly subjected to the chemical and physical properties of a membrane material. The effective pores size, porosity, uniformity, thickness, surface chemistry and morphology also have influence on membrane separation performance. We reviewed the fabrication and potential applications of nanoporous membranes for separation processes, operational challenge, energy usage, greenhouse emission and effect of climate change. Thus, the major points, include: (1) fabrication methods of nanoporous membranes for excellent selectivity and good permeability for selected particle sizes, (2) Theoretical modeling and simulations of nanoporous membranes, (3) potential applications of nanoporous membranes, (4) the recent discovery of novel nanoporous membrane structures aimed at overcoming the challenge of fouling, (5) the challenge of energy usage, (6) addressing climate change as a contributing factor to the challenges of water treatment industry and membrane technology.