Segun Michael Abegunde

The Federal Polytechnic Ado-Ekiti · Department of Science Technology

In this work, activated carbon (AC) was prepared from Raphia taedigera seed and modified with sodium hydroxide (0.1 M) solution. The activated carbon (RTB) and the untreated Raphia taedigera raw (RTR) seed powder were characterised and engaged to remove Methylene blue (MB) dye from aqueous solution. Both materials were characterized by Fourier-tran...

In this research, the traditional 45S5 bioactive glass powder was modified using ZnO (<20 μm) by powder metallurgy route. Five different bioactive ceramics compositions (45BC, 45BC 1 , 45BC 3 , 45BC 5 and 45BC 7) were formulated containing varied amounts of ZnO in the step of 1, 3, 5 and 7 wt % respectively. Each body was thoroughly mixed in a porc...

In this research, rice husk ash (RHA) and eggshell ash (EGA) were used as biogenic materials for total replacement of pure quartz (SiO2) and calcium oxide (CaO) respectively in the traditional 45S5 bioactive glass composition by powder metallurgy route. Body formulation with nominal composition 45% RHA (SiO2), 24.5 EGA (CaO), 24.5% Na2O and 6% P2O5...

The work presents a report on Zinc oxide nanoparticles (ZnO NPs) synthesized through a green approach using Nauclea latifolia fruit extracts, with a view to investigating the prepared nanoparticles for their antimicrobial activities. The ZnO NPs synthesized were characterized using various analytical instruments, including X-ray Diffraction (XRD),...

This research presents a facile and inexpensive method for synthesizing ZnO nanoparticles using Nauclea latifolia fruit extract as a bioreductant and stabilizer. The prepared particles were characterized using some analytical techniques, including X-ray diffraction (XRD) for crystallinity and phase identification, scanning electron mi�croscopy (SEM...

This study demonstrates the synthesis of ZnO nanoparticles (NPs) by a green approach using an aqueous extract of Nauclea latifolia fruit as a reducing and stabilizing agent. The synthesized nanoparticles were subsequently engaged for the removal of Congo red (CR) dye from the aqueous solution. X-ray diffraction (XRD) revealed the hexagonal wurtz...

In this study, we prepared treated (TCH) and untreated (UCH) biosorbents from coconut husks for the sustainable removal of methyl green (MG) dye from aqueous solutions using batch adsorption mode. The products were characterized by Fourier transform infrared (FT-IR), scanning electron microscope (SEM), energy-dispersive X-ray, and N2 adsorption/des...

The present study investigates the adsorption of Methylene Blue (MB) dye onto NaOH-treated biosorbent prepared from Kola Nut Pod for sustainable wastewater remediation. The biosorbents, raw Kola nut pod (RKP) and treated Kola nut pod (TKP), were subjected to characterization using Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron...

In the present work, ethanolic extract of Raphia taedigera seed was used as corrosion inhibitor for Aluminium alloy 6063 (AA6063) in an acidic environment. The evaluation was carried out with different dosages of the seed extract in 1.0 M HCl using the weight loss method at room temperature. The present study results confirmed that the Raphia taedi...

Zeolites NaA is one of the most valuable synthetic zeolites widely used as ion-exchange material, catalysts, and adsorbents in industry. There is therefore need to adopt a more energy-efficient route for its synthesis from low-cost and sustainable raw materials. In this present work, zeolites Na-A was synthesized from natural kaolinite clays obtain...

In this study, glass-ceramic materials with wollastonite as the major crystalline phase are prepared from waste glass of Na2O – CaO – Al2O3 – SiO2 system with addition of nucleating agents such as TiO2, ZrO2 and ZnO respectively using control crystallization sintering process. Two glass body compositions GC1and GC2 were prepared comprising varying...

Contamination of waters by discharge of heavy metals such as Lead (Pb), Cadmium (Cd), Zinc (Zn) etc. from various industrial activities poses a great threat to humans, plants and animals, and thus the need for their removal from waste waters. In this work, synthetic tobermorite was prepared using waste soda-lime-silica glass as silica precursor whi...

This present work aims at synthesizing sodium silicate solutions from selected industrial wastes (waste glass and rice husks) using hydrothermal method. The as-received waste glasses of different mix colors were initially washed, crushed and wet milled for several hours then sieved through 75µm mesh. The sieved recycled glasses were then oven dried...

The recent rapid urban growth has resulted into high demand for virgin materials thus causing more accumulation of solid wastes (urban mines). As a result, efforts are now geared towards urban mining approach based on re-using and recycling in order to ensure sustainability and environmental protection. In this regard, the present work synthesized...

The role of angiogenesis in cancer pathophysiology cannot be over emphasized as this process aids tumor metastasis via nourishment of nutrient deprived tumors with oxygen and nutrients. Thus, it is pertinent to inhibit this process via the vascular endothelial growth factor receptor 2 (VEGFR-2). Most available anticancer drugs that targets VEGFR-2...

Adsorption is one of the oldest and extensively studied techniques for water and wastewater treatment. As a surface phenomenon, adsorption efficiency relies heavily on the surface chemistry of the natural and modified material. The mode of surface modification and the nature of the precursor have significant impacts on surface functionalities. Chem...

This present work revealed the isotherm, kinetic, and thermodynamic behaviour of methylene blue (MB) dye adsorbed onto acidic activated carbon (AAC) and base activated carbon (BAC) prepared from Raphia taedigera seed by carbonization and chemical activation. AAC and BAC were activated with sulphuric acid and sodium hydroxide respectively. Batch equ...

Raphia taedigera activated carbon was prepared and impregnated with sodium dodecyl sulphate (SDS) and disodium ethylene diaminetetraacetic acid (EDTA) to enhance its performance for the adsorption of lead ions from aqueous solution. The two modified activated carbons, the sodium dodecyl sulphate modified Raphia taedigera activated carbon (SDS...

In this present study, synthetic tobermorites are prepared using bio-waste (snail shell) and municipal waste (container glasses) as lime and silica precursors respectively. Six batch compositions were formulated with varying combination of soda-lime glass and snail shell ash. The bodies were sintered at 950 °C for a holding period of 2 h in an elec...

In this work, aqueous and ethanolic extracts of Calotropis procera and Clusia rosea leaves were evaluated for phytochemicals and antibacterial activities in an attempt to evaluate their medicinal potentials. The results of the phytochemical screening showed the presence of alkaloids, saponins, glycosides, tannins, and phenolic compounds in the aque...

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Raphia taedigera seed is an underutilized seed with several bioactive compounds that have the tendency to regulate metabolic processes in other to promote healthy living. In this present study, sixteen bioactive compounds were identified in the Raphia taedigera seed oil using Gas chromatography-mass spectrometry (GC-MS). GC-MS revealed the presence...

In this work, the possibility of using Raphia taedigera seed as a low-cost adsorbent to remove methylene blue (MB) dye from aqueous solutions was investigated. The activated carbon was prepared by carbonization and chemical treatment of the seed with sulphuric acid to produce acid-modified Raphia taedigera seed activated carbon (RTAC). The surface...

Mistotoe (Tapinanthus globiferus) as freshly prepared leaf extract was administered at variable concentration (25, 50 and 100 mg/kg) per body weight as dietary supplement to laboratory albino mice via oral gavage for two weeks consecutively. The mice were also simultaneously administered 1.5 mg/kg pesticide precursor (Prontosil). 24 hours after the...

Plant-mediated synthesis of iron oxide nanoparticles has been increasingly drawing attention due to its eco-friendly nature and cost effectiveness. The biosynthesis technique engages plant secondary metabolites such as alkaloids, flavonoids, saponins, phenols, proteins, carbohydrates, glycosides, quinine, steroids, and tannins as reducers and/or st...

There has been widespread research and engagement in recent years on the use of plant material in preparing porous carbon for wastewater treatment. In this study, new biochars (BCs) impregnated with 0.1 M sulphuric acid (RTA) and 0.1 M sodium hydroxide (RTB) were prepared. The BCs and raw seed [RTR] were characterized using scanning electron micros...

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Pseudo second order reversible reaction kinetics plot for the adsorption of MB

Indiscriminate exposure of man to iron and silver toxicity through a long-term ingestion of contaminated food, utensils and water coupled with its health challenges has been widely reported. This study examined the effect of iron (ll) sulphate (2.5 mg/kg body weight) and silver nitrate (1.5 mg/kg body weight) fed to albino rats consecutively alone...

Aim: The proximate, qualitative and quantitative phytochemicals, and elemental analysis of Raphia taedigera seed for useful bioactive contents were determined. Results: The results showed the seed contained 6.56%, moisture; 1.96%, ash; 4.56%, protein; 7.50%, crude fibre; 5.30%, fats and 74.12% carbohydrate. Qualitative screening of the ethanolic ex...

The processes involved in the conversion of cassava tuber into various products generate large volumes of wastes in solid, liquid and gaseous forms. These wastes when discharged into the environment have serious environmental impacts on the natural composition and structure of soil. The aim of this research work was to investigate the effects of ca...

With the current emergence of green chemistry to keep the environment safe, attention is being shifted towards using plant extracts as corrosion inhibitors. The inhibitive performances of Talinum triangulare leaf extract and Musa sapientum peel extract on the ZA-27 in 1.0 M and 1.5 M hydrochloric acid solutions were studied for 18 days using mass l...

Acid digestion is important in solubilizing metal ions in heavy metals determination. A number of procedures exists and the one used is dependent on different factors. This work is aimed at investigating the performance of three different acid digestion procedures (Aqua Regia, 2 M HNO3and HNO3/HClO4) for the extraction of Pb, Cd and Zn in soil samp...

Atmospheric dust samples from major roads in Ado-Ekiti, Ekiti State, Nigeria were analyzed for heavy metals. The heavy metals were determined using atomic absorption spectrometer (AAS) Buck Scientific model 210VGP. The overall mean of the concentrations of heavy metals assessed in the samples were in the order Zn > Mn > Pb > Ni > Cu > Cr. Pollution...

Seedlings of Ofada rice (Oryza sativum L.) were raised in sand (swampy) and clay (upland) cultures under 500 µM sodium arsenate and 500 µM Ca(OH) 2 aqueous extract for 40 days. The uptake and distribution pattern of arsenic with possible induction of oxidative stress in the rice plants were determined. The inhibitory potential of lime against arsen...

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High levels of iron [Fe2+] and lead [Pb2+] in the body have been linked to oxidative stress arising from peroxidation of membrane biomolecules and this usually results or manifests as neurologic, hepatic as well as cardiovascular disorders. Therefore, this study is sought to investigate the inhibitory effect and other antioxidant potentials of bo...

Introduction: Anticlastogenic potential of Ocimum canum (Black leaf) extract was studied in bone marrow cells of mice using micronucleus assay. Experimental: 200mg/kg of Ocimum canum aqueous extract was administered as dietary supplement for 30-days. The mice were divided into three groups A, B and C. Animals in group A were fed with distilled wate...

In many Nigerian cities, there has been a phenomenal increase in the volume of wastes generated daily within the past few years. This is due largely to the increasing rates of population growth, urbanization, industrialization and general economic activities. In these cities, the habit of dumping and disposing waste indiscriminately has become a co...

The physico-chemical parameters and metallic analysis of water samples obtained from different hand-dug wells in Ikole Ekiti and Ode Ekiti both in Ekiti State were carried out. The analyses carried out include pH, electrical conductivity (EC), total hardness (TH), total alkalinity (TA), total dissolved solid (TDS), chloride (Cl- ), calcium (Ca2+),...

Phytochemicals screening were carried out on different solvent extracts of leaf, seed and stem bark of Calotropis procera to compare the efficiency of different solvents which are Ethanol, Diethyl Ether, Chloroform, Methanol, N-hexane, De ionised water, Ethyl Acetate, Acetone, Petroleum Ether and Isopropanol. Qualitative analyses of twelve secondar...