Browsing by Author "Ayeni, Augustine Omoniyi"

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A Reviewon Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation
(Membrane (MDPI), 2021) Agboola, Oluranti; Fayomi, O. S. I.; Ayoola, Ayodeji Ayodele; Ayeni, Augustine Omoniyi; Alagbe, Edith E; Sanni, Samuel E; Okoro, Emmanuel E.; Moropeng, Lucey; Sadiku, Rotimi; Kupolati, Kehinde Williams; Oni, Babalola Aisosa
AReviewonPolymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation
(Membrane, 2021) Agboola, Oluranti; Fayomi, O. S. I.; Ayoola, Ayodeji Ayodele; Ayeni, Augustine Omoniyi; Alagbe, Edith E; Sanni, Samuel E; Okoro, Emmanuel E.; Moropeng, Lucey; Sadiku, Rotimi; Kupolati, Kehinde Williams; Oni, Babalola Aisosa
Biotechnological advances in polyhydroxyalkanoates production from complex carbon sources
(Biocatalysis and Biotransformation Volume 43, 2025-06-03) Akinwumi, Adetutu Ruth; Nwinyi, Obinna Chukwuemeka; Ayeni, Augustine Omoniyi
Microbial synthesis of polyhydroxyalkanoate (PHA) at the industrialized level is already being exploited, although constrained, due to high costs. The biotransformation of complex constituents using microbial biocatalysts is gaining prominence in the production of hydroxyl fatty acid monomers. Recent research has focused on identifying and optimizing complex substrates that offer high carbon load, ready availability, and a suitable balance of nutrients for microbial growth and polymer bioaccumulation. Exploring this biosynthetic pathway can generate advanced and novel biopolymers, thereby expanding industrial applications. Different enzymes, both homo- and heterodimer in nature, are involved in PHA synthesis. Thus, the type of enzyme group the producing microorganism uses determines the carbon-length class of PHA generated. However, incubation time, growth nutrient supplements, and fermentation parameters such as temperature, pH, and oxygen content have constantly been hindrances to increasing the PHA yields from complex substrates. This review also situates the potency of using crude oil spills as carbon substrates for PHA production. This review further emphasizes the role of microbial biotransformation of hydrocarbonbased substrates, including crude oil spill, for the production of hydroxylated fatty acid monomers used in PHA synthesis, offering a novel prospects for bioremediation with value-added biopolymer generation.
Improved poly(3-hydroxybutyrate) production by new strain of Bacillus paramycoides AAR-6
(International Journal of Biological Macromolecules Volume 319, 2025-08-03) Akinwumi, Adetutu Ruth; Nwinyi, Obinna Chukwuemeka; Ayeni, Augustine Omoniyi; Olatope, Samuel O.A.; Fadipe, Temitope O.; Mohan, S. Venkata
Synthesis of PET-Magnesium Oxide-Chitosan Nanocomposite Membranes for the Dehydration of Natural Gas
(Periodica Polytechnica Chemical Engineering, 67(2),, 2023) Agboola, Oluranti; Oginni, Grace Ayomide; Oladokun, Olagoke; Efeovbokhan, Vincent; Ayeni, Augustine Omoniyi; Ayoola, Ayodeji Ayodele; Adedamola, Adedayo Adeyanju; Alagbe, Edith Egbimhanlu; Fayomi, O.S.I.; Moropeng, Lucey; Ogunlade, Stephen Kehinde
Flat thin-film magnesium oxide-chitosan nanocomposite membranes were synthesized with polyethylene terephthalate (PET) and employed for natural gas dehydration. The water vapor permeation was most pronounced with a nanocomposite membrane doped with 0.9 g MgO nanoparticles (NP) as a result of a significant upsurge in the permeability of water vapor in the membrane (0.87). With the increase in MgO NP, large macro-voids are created, substratum pore size, and thickness together with the water vapor permeation were upsurged. The dehydration of natural gas performance of magnesium oxide-chitosan nanocomposite membranes synthesized with PET was enhanced with the increase in MgO NP embedded in the membrane. Though water vapor permeation was restricted by the polyester non-woven material used as a support for the nano composite membranes, as the three membranes did not reach the permeation coefficient of 1. However, the permeation coefficient increased with an increased MgO NP, with three mambrane samples (M1, M2 and M3) having permeation coefficient of 0.763, 0.77 and 0.87 respectively. The gas reduced with an increase MgO NP, with M1, M2 and M3 having 3.46 × 10−2, 3.17 × 10−2 and 3.88 × 10−3 kg/m3 respectively. From the adsorption study, the discrepancy observed between CH4 and vapor with isotherm models was ascribed to the different adsorption behavior of CH4 and vapor on the membrane-active area. The cost of making the membrane cannot be considered as a terminal criterion because most of the cost-effective option is not always the optimum one. The membranes confirmed their suitability for the dehydration of natural gas.