Browsing by Author "Adebayo Kehinde Raheef"

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    EFFECT OF MAGNETIZED IRRIGATION WATER AND SEEDS ON GERMINATION, WATER USE EFFICIENCY AND YIELD OF COWPEA CULTIVARS
    (LAUTECH Journal of Engineering and Technology, 2023-03-24) Adebayo Kehinde Raheef
    The effects of magnetized irrigation water and cowpea seeds on germination, water use efficiency (WUE), and yields were investigated under transparent garden. Irrigation water was treated with neodymium and round-bar magnets with magnetic fluxes of 112.74 mT and 107.15 mT. Water was applied at 1.50 litres per day for 3-day intervals at 2 plants per bucket. Cowpea cultivars (C1= TVX-117, C2= IAR-48, and C3 = Ife brown) were stimulated within magnetic fields of fluxes 27.32 mT and 18.54 mT before planting. Four experiments and one control were replicated five times randomized using factorial design. The neodymium-treated water only (T1), neodymium-treated water and seeds (T2), round-bar treated water only (T3), round-bar treated water and seeds (T4), and non-treated water and seeds (Tc). The germination indices revealed that four magnetic treatments performed better than the control with significant differences at p<0.05 (R2 = 0.9598). Cowpea yields showed that there was a significant difference at p=0.0006 (p<0.05, R2 = 0.9599). There were no significant differences in WUE for all the treatments as R2 = 0.01830 was closed to zero at p<0.05. This study concluded that magnetized water and/or seeds improved growth rate, WUE, and cowpea yield compared to the control
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    Unlocking the potential of magnetic biochar in wastewater purification: a review on the removal of bisphenol A from aqueous solution
    (Environ Monit Assess, 2024-03-23) Katibi Kamil Kayode; Shitu Ibrahim Garba; Khairul Faezah Md. Yunos; Rabaah Syahidah Azis; Raphael Terungwa Iwar; Suleiman Bashir Adamu; Abba Mohammed Umar; Adebayo Kehinde Raheef
    Bisphenol A (BPA) is an essential and extensively utilized chemical compound with significant environmental and public health risks. This review critically assesses the current water purification techniques for BPA removal, emphasizing the efficacy of adsorption technology. Within this context, we probe into the synthesis of magnetic biochar (MBC) using co-precipitation, hydrothermal carbonization, mechanical ball milling, and impregnation pyrolysis as widely applied techniques. Our analysis scrutinizes the strengths and drawbacks of these techniques, with pyrolytic temperature emerging as a critical variable influencing the physicochemical properties and performance of MBC. We explored various modification techniques including oxidation, acid and alkaline modifications, element doping, surface functional modification, nanomaterial loading, and biological alteration, to overcome the drawbacks of pristine MBC, which typically exhibits reduced adsorption performance due to its magnetic medium. These modifications enhance the physicochemical properties of MBC, enabling it to efficiently adsorb contaminants from water. MBC is efficient in the removal of BPA from water. Magnetite and maghemite iron oxides are commonly used in MBC production, with MBC demonstrating effective BPA removal fitting well with Freundlich and Langmuir models. Notably, the pseudo-second-order model accurately mechanisms include pore filling, electrostatic attraction, hydrophobic interactions, hydrogen bonding, π-π interactions, and electron transfer surface interactions. This review provides valuable insights into BPA removal from water using MBC and suggests future research directions for real-world water purification applications.