Matthew Ayorinde Adebayo

The Federal University of Technology, Akure, Ondo State, Nigeria. · Department of Chemistry

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 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, zinc which is an important industrial metal and the major component of alkaline battery was recovered from spent alkaline batteries using a Cyanex 272 (solvent) impregnated on polyurethane foam (PUF). The impregnation of Cyanex 272 on PUF was confirmed using Fourier transform infrared spectroscopy. The relevant factors affecting reco...

A glass foam (GF) of high specific compressive strength (12.17±1.91 MPa g ⁻¹ cm ⁻³ ) and low thermal conductivity (.121±.001 Wm ⁻¹ K ⁻¹ ) was produced from waste glass of photovoltaic module, eggshells, and bentonite clay. The influences of the amount of clay and heat‐treatment temperature on the GFs final properties were assessed. X‐ray diffractio...

Utilization of synthetic dyes in different sectors has been identified as one of the major sources of environmental degradation; as a result, removal of their remnants from the industrial effluent is highly encouraged for conserving our environment. In this study, the synthesized plantain leaf biochar (PLB) was used for adsorbing synthetic malachit...

Titanium nanocomposite (TiTR) was synthesised from Triumfetta rhomboidea leaf extract and used as corrosion protection of mild steel (MS) in 1 M hydrochloric acid. The corrosion inhibition process of the nanocomposite was explored using weight loss, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation (PDP). The corrosion i...

Chemically activated cocoa leaves biochar (CLB) was successfully prepared from fallen cocoa leaves (CLs) via ZnCl2–activation and pyrolysis at 700 °C for sequestration of toxic crystal violet (CV) dye from aqueous solution. CLs and CLB were characterized using elemental analysis (CHN/O), Brunauer-Emmett-Teller method (BET), thermogravimetric analys...

Chemically activated cocoa leaves biochar (CLB) was successfully prepared from fallen cocoa leaves (CLs) via ZnCl 2-activation and pyrolysis at 700 C for sequestration of toxic crystal violet (CV) dye from aqueous solution. CLs and CLB were characterized using elemental analysis (CHN/O), Brunauer-Emmett-Teller method (BET), thermogravimetric analys...

Chromolaena odorata leaf extract (COLE) was investigated as a possible natural and eco-friendly substitute inhibitor of mild steel in 1 M HCl by weight loss and electrochemical techniques. Inhibitory performance of COLE varied directly with concentration but diminished as temperature increased. The adsorption of the extract on MS conformed to Langm...

The release of unspent dyes from industries constitutes hazard and environmental challenges. For rapid and efficient removal of Congo red from aqueous solutions, a composite was prepared from coconut husk, raw clay, Fe(II) and Fe(II) compounds. Adsorption variables (initial pH of the solution, contact time, temperature and initial concentration of...

Photocatalytic processes are efficient techniques for decolorization of dye-contaminated water. However, efficient techniques for complete recovery of the spent catalysts, after the process, are required. Based on this need, the present study describes the synthesis of the composites of niobium(V) oxide (Nb2O5) supported on eco-friendly glass foams...

In a search for effective methods for controlling seed germination and growth, bio-oils were produced from pyrolysis of bunches of empty palm fruit at different temperatures. Physicochemical chemical characteristics of the bio-oils were evaluated using standard analytical procedures. Allelopathic activities of the bio-oils were evaluated against th...

This study examined the levels of trace metals in leachates from dumpsites and hand dug wells used as sources of drinking water by the inhabitants of Okene Metropolis, Kogi State Nigeria. This is important because the presence of toxic heavy metals in the environment continues to generate a lot of concern to environmental scientists, government age...

The quest for efficient, thermally stable, alternative and eco-friendly anticorrosion additives for industrial cleaning and pickling operations necessitated this study. From methanolic extract of Chromolaena odorata leaves, titanium nanocomposite was synthesised, characterised and applied as a corrosion inhibitor of mild steel in acidic medium. The...

Environmental pollution as a result of industrialization is a continuous menace. In our precious environment, Persistent organic pollutants (POPs) are constantly present and these pollutants are of great concern because of their high level of toxicity, persistency and bioaccumulation. Therefore, this chapter discusses different types and sources of...

The cyanogen potentials of local wines (fermented and unfermented palm wine) and the effect of pH (5.6-9.0) on the samples was determined using cyanomethemoglobin complex method. A total of 108 test samples were analyzed and the hydrogen cyanide content was found to vary considerably from 0.0583±0.0030 mg/L to 0.2488±0.0015 mg/L. Fresh palm wine wa...

Ethylene diaminetetraacetic acid (EDTA)-functionalized graphene was synthesized from Nigerian coal using a chemical exfoliation method and the graphene was applied for the removal of Congo red dye from aqueous solutions. The synthesized coal graphene and the raw coal were characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray dif...

Mild steel is widely used for automobile and structural applications, however, mild steel greatly rusts in acidic environment. Applications of corrosion inhibitors and protective coatings as well as cathodic protection are some of the techniques by which corrosion of mild steel is controlled and minimised. Hence, corrosion inhibitory ability of the...

In this work, Moringa oleifera seed husk (MOSH) and Moringa oleifera seed pulp (MOSP) were converted via a green route into efficient biosorbents for biosorption of Acid Blue 9 (AB9) synthetic dye from the wastewater. The textural properties, morphologies, and structures of both biosorbents were analyzed using Fourier infrared spectroscopy (FTIR),...

Wastewater generated from industries contains a large number of toxic substances, including phenolic compounds, that are harmful to the aquatic life and the environment. In this work, a composite was prepared from locally sourced materials (coconut shell and clay) for adsorption of phenol and 4-nitrophenol from aqueous solutions. The prepared compo...

Ethylene diaminetetraacetic acid (EDTA) functionalized graphene was synthesized from Nigerian coal using a chemical exfoliation method and the graphene was applied for the removal of Congo red dye from aqueous solutions. The synthesized coal graphene and the raw coal were characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray dif...

Equilibrium and Thermodynamic Characteristics of the Corrosion Inhibition of Mild Steel Using Sweet Prayer Leaf Extract in Alkaline Medium

Biochar is a solid material obtainable from biomass pyrolysis and useful for pollution alleviation and soil amendment. In this study, Biochars A and B were produced from elephant grass at pyrolytic temperatures of 400 • C and 600 • C, respectively, for removal of nitrate ion from aqueous solution. The physicochemical characteristics of the biochars...

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...

The efficiency of a composite prepared from bentonite and ackee apple seed (CBAAS) to remove Congo red and malachite green from aqueous solutions was explored. The CBAAS was characterised using Scanning Electron Microscopy, Fourier Transform Infrared spectroscopy, X-ray diffraction, and porosimetry techniques. Batch adsorption method was used to as...

Wastewater treatment is of great concern in the textile industries because dyes, which are released into wastewater, are stable due to their structures and that some of the existing conventional techniques are not effective for aqueous removal of dyes. Among the advanced techniques for treatment of industrial effluents, adsorption is one of the mos...

The potentials of avocado pear (Pearsea americana) exocarp for the removal of lead and cadmium ions from solutions were characterized in single metal and binary metal systems. The native Pearsea americana was characterized using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The Pearsea americana exocarp adso...

The potential of onion skins for removal of aqueous Cd(II) was investigated. Onion skin powder was chemically modified using thioglycolic acid to develop a suitable, low-cost, and efficient adsorbent for the removal of Cd(II) from aqueous solutions. Influences of temperature, contact time, initial concentration of Cd(II), adsorbent dosage, and pH o...

The reaction of 5,5′-dithiobis(2-nitrobenzoate), DTNB, with hemoglobin sulfhydryl groups is linked to three negatively contributing Bohr effect groups: His2β is present in all avian hemoglobins but absent in some mammalian hemoglobins; His77β and His143β are absent in avian but present in nearly all mammalian hemoglobins. To probe the consequences...

The efficacy of onion skins, both unmodified and chemically modified with thioglycolic acid, was investigated as alternative low-cost adsorbents for the sequestration of aqueous lead(II) ions from aqueous solution. The adsorbents were characterised using Fourier transform infrared spectroscopy and scanning electron microscopy – energy dispersive X-...

Sludge-derived activated carbons (ACs) were prepared by conventional heating and microwave pyrolysis. The ACs were characterized using several analytical and functional techniques and used for removal of six phenolic compounds from aqueous solutions. The adsorbents exhibited similar features and possessed hydrophobic surfaces. The ACs were assigned...

An activated carbon was prepared by chemical activation of the sludge collected from tannery wastewater treatment plant (TWTP) using microwave heating. The sludge was mixed with ZnCl2 and lime to form a paste, which was inserted inside a quartz reactor and irradiated by microwave for 10 minutes under N2. After the pyrolysis, the carbonized material...

Ab initio simulation based on the density-functional theory was used to evaluate the interaction between the pristine (5,5) and (8,0) Single Wall Carbon Nanotubes (SWCNT) and two synthetic dyes (Acridine Orange and Methylene Blue) as well as Anthracene molecule. The interaction between this molecules with pristine (5,5) and (8,0) SWCNT as well as o...

Sewage sludge was pyrolyzed in an inert atmosphere at 550°C after chemical treatment with ZnCl2 or KOH using an organic precursor to inorganic weight ratio of 1:1. The materials were used as adsorbents for removal of Cu(II) from aqueous solution. The adsorbents were characterized using adsorption/desorption nitrogen isotherms, thermal analysis, sca...

This letter presents comments on the paper “Critical review on the applicability of Avrami fractional kinetic equation in adsorption-based water treatment studies” that was recently published in Desalination and Water Treatment by N.A. Oladoja. This author explained the misuse of Avrami-type kinetic equation in adsorption process at solid/solution...

This study presents removal of crystal violet (CV) dye from aqueous solutions using solid food waste, avocado kernel seed powder (ASP). ASP was used in the native form for biosorption study. The effects of different experimental conditions such as pH of the solution, initial dye concentration, contact time, and temperature were investigated using b...

The shell of bacuri together with inorganic components [red mud + lime + KOH + KAl(SO4)2 + Al(OH)3] at different ratios of 1.0 (BC-1.0), 1.5 (BC-1.5), and 2.0 (BC-2.0) were pyrolized at 1073 K. To complete the chemical activation process, the inorganic components were leached from the carbonaceous matrix through acidification with 6 M HCl under ref...

One of the major challenges of the technological driven society is the lingering environmental pollution as a result of toxic species. Adsorption is one of the versatile techniques employed for removal of toxic species from aqueous solutions. Several factors have been identified to influence adsorptive systems. Thus, it is pertinent to know the phe...

The qualities of waters are constantly diminishing due to release of toxic components into the environment. It is very important to treat wastewater in order to remove pollutants and improve water quality. Generally, adsorption technology has proven to be one of the most effective techniques in the separation and removal of a wide variety of organi...

In adsorption study, isotherms and kinetics of adsorption process provide pieces of information underlying the mechanisms and dynamics of the process. Several equilibrium and kinetic models are usually employed for performing the experimental design of an adsorption system. In this chapter, the Langmuir, Freundlich, Sips, Liu, Redlich–Peterson nonl...

A novel carbon composite was prepared from a mixture of coffee waste and clay with inorganic:organic ratio of 1.3 (CC-1.3). The mixture was pyrolysed at 700 °C. Considering the application of this adsorbent for removal of anionic dyes, the CC-1.3 was treated with a 6 mol L-1 HCl for 24 h to obtain ACC-1.3. Fourier transform infrared (FTIR), N2 adso...

New carbon composite materials were prepared by pyrolysis of mixture of coffee wastes and red mud at 700 o C with the inorganic : organic ratios of 1.9 (CC-1.9) and 2.2 (CC-2.2). These adsorbents were used to remove reactive orange 16 (RO-16) and reactive red 120 (RR-120) textile dyes from aqueous solution. The CC-1.9 and CC-2.2 materials were char...

Two Brazilian peat samples in different stages of decomposition, fibrous peat (FP) and decomposed peat (DP), were used as biosorbents for the removal of the textile dye Cibacron Brilliant Yellow 3G-P (CBY) from aqueous solutions. These biosorbents were characterized by Fourier transform-infrared spectroscopy (FT-IR) and scanning electron microscopy...

The use of native Jatropha curcas (JN) and Jatropha curcas treated by nonthermal plasma (JP) as biosorbents for the removal of Reactive Red 120 (RR-120) dye from aqueous solutions was proposed in this work. Jatropha curcas is an abundant residue in the biocombustible industry. These biosorbents were characterized by infrared spectroscopy (FTIR), sc...

Unesterified Cholesterol, together with glycolipids, accumulates in cells leading to Niemann-Pick type C disease, an autosomal recessive neurodegenerative disease . Two types of genes, NPC1 and NPC2 responsible for this neurodegenerative disorder have been identified but their respective precise functions are yet to be fully elucidated. NPC1-NPC2 p...

Multi-walled and single-walled carbon nanotubes were used as adsorbents for the removal of Reactive Blue 4 textile dye from aqueous solutions. The adsorbents were characterised using Raman spectroscopy, N2 adsorption/desorption isotherms and scanning and transmission electron microscopy. The effects of pH, agitation time and temperature on adsorpti...

Biosorption of lead(II) from aqueous solution using Streblus asper leaves was investigated via a batch system. The optimum conditions of biosorption were determined by investigating the initial lead (II) concentration, contact time, temperature, biosorbent dose, and pH. The data were analyzed using pseudo second-order, intra-particle diffusion and...

The biosorption of Ni2+ by Streblus asper, biomass was investigated in single metal solution. Batch kinetic studies were carried out in order to determine effect of adsorbent and adsorbate dose, pH of solution, agitation time and temperature on biosorption of Streblus asper. The maximum Ni2+ biosorption was obtained at pH 6.0. The equilibrium natur...

As part of our on-going research for more effective antimicrobial drug. A new mixed ligand has been synthesized. The starting material is Bithiourea which was synthesized by the reaction between semicarbazide hydrochloride and potassium thiocynate. The bithiourea produced was cyclised in the presence of 3% Hydrogen peroxide to produce 2,5-diamino-1...

A bioactive ligand, 2,5-diamino-1,3,4-thiadiazole (L), derived from semicarbazide hydrochloride, and its metal complexes were prepared and characterized. The complexes were characterized using elemental, infra-red, ultraviolet/visible, magnetic moment, atomic absorption, thin layer chromatography and molar conductance measurements. The IR data reve...

The complexes of the type ML 2 were prepared. [Where M=Mn (II) and Fe (III)], L = 2,5-diamino-1,3,4-thiadiazole. The ligand (L) has been prepared by cyclisation of bithiourea in a 3% hydrogen peroxide medium. The complexes are non-electrolyte in DMF. The elemental analysis, magnetic measurements, conductivity measurements and spectral studies of th...

The water quality parameters for potability of water from Magami; the confluence of the two major river sources of water in Nasarawa town in Nigeria was analyzed using standard methods and statistical indices. The parameters determined were: total suspended solids (TSS), dissolved solids (DS, turbidity, conductivity, total hardness, calcium hardnes...

During endocytosis, the pH in the lumen of late endosomes and lysosomes decreases to allow degradation of sphingolipids and other membrane components at the surface of intraluminal membranes. At the level of late endosomes, cholesterol is sorted out by the cholesterol binding proteins NPC1 and NPC2. Their defects lead to an endolysosomal accumulati...

We examined the effect of Niemann-Pick disease type 2 (NPC2) protein and some late endosomal lipids [sphingomyelin, ceramide and bis(monoacylglycero)phosphate (BMP)] on cholesterol transfer and membrane fusion. Of all lipid-binding proteins tested, only NPC2 transferred cholesterol at a substantial rate, with no transfer of ceramide, GM3, galactosy...

Transition metal complex of Ni(II) with mefloquine hydrochloride (antimalaria drug) was synthesized using a template method. Chemical analysis including conductivity measurements and spectroscopic studies were used to propose the geometry and mode of binding of the ligand to metal ion. From analytical data, the stoichiometry of the complex has been...

As part of the ongoing research for more effective antimalarial drug, Fe (III) complex of mefloquine hydrochloride (antimalarial drug) was synthesized using template method. Mefloquine was tentatively found to have coordinated through the hydroxyl and the two nitrogen atoms in the quinoline and piperidine in the structure, respectively. Characteriz...

As part of the ongoing research for more effective antimalarial drug, Fe (III) complex of mefloquine hydrochloride (antimalarial drug) was synthesized using template method. Mefloquine was tentatively found to have coordinated through the hydroxyl and the two nitrogen atoms in the quinoline and piperidine in the structure, respectively. Characteriz...

The problem of removing pollutants from aqueous wastewater is growing with the increase in water pollution owing to enhanced industrial activities. Three earthworm cast soil types were studied. Modified and unmodified types were prepared and used for removal of lead and Chromium ions. At about 298 K, the earthworm cast soil types, modified and unmo...

Complexation behaviour of mixed complexes of mefloquine hydrochloride and chloroquine phosphate (first-line antimalarial drugs) with Cobalt(II), Nickel(II) and Iron(III) were studied; the complexes were prepared using template methods, and chelates of 1:1:1 stoichiometries were formed. The nature of the bonding of the mixed ligands (mefloquine and...

Unesterified Cholesterol, together with glycolipids, accumulates in cells leading to Niemann-Pick type C disease, an autosomal recessive neurodegenerative disease.Transfer studies of fluorescent cholesterol esters or cholesterol analogs are biased because of changes in the physicochemical nature of the lipids and might not correctly reflect the pro...

The effectiveness of certain antioxidant substances in the protection of red cells from oxidation and degradation with respect to their window times of survival have been analyzed using UV-Visible spectrophotometry. Antioxidant substances evaluated included; vitamin A, vitamin D, mixture of vitamins A and D, various species of Kolanut, Garcinia kol...

This study involved the examination of biomass, Vitex doniana leaf powder, in the adsorption of heavy metals from water. The water samples were obtained from two sources in Nasarawa town in Nasarawa State, Nigeria; River Tammah (one of the two major river sources of water for drinking, domestic, irrigation and other agricultural uses in the town) a...

Biosorption of heavy metals from polluted waters in Nasarawa town in Nigeria by Vitex doniana leaf powder was studied as a function of pH using atomic absorption spectrophotometry. Water sample used was obtained from river Nasarawa in Nasarawa town. The river being the major source of water for domestic and agricultural use was investigated at pH 6...