ABSTRACT The focus of this research work is the unraveling of the microbial dynamics of the biodegradation of a mixture of polycyclic aromatic hydrocarbons (PAH), naphthalene, anthracene and pyrone in an aqueous- soil matrix. The soil used in these studies was characterized as highly porous with a sandy-clay ratio of 85-14%. The microbial growth study was characterized by an initial lag phase, a rapid and an exponential increase in cell biomass, a stationary phase and finally a death phase. T...
ABSTRACT Graphene nanoribbons (GNRs), titanium dioxide (TiO2), and their composites Graphene nanoribbons/titanium dioxide (GNRs/TiO2) were employed towards the simultaneous detection of nevirapine (NVP) and glucose (GLC). The nanomaterials were characterized Fourier-transform infrared spectroscopy (FTIR), UV-vis and thermogravimetric analysis (TGA), cyclic voltammetry, electrochemical impedance spectroscopy, linear sweep voltammetry, differential pulse voltammetry, and chronoamperometry were ...
BSTRACT Phytosynthesis of TiO2 NPs from Ximenia Caffra leaf extract and their application in poultry feeds as an antibacterial agent was done. Reaction time and pH effect for the synthesis of TiO2 NPs were optimized using a single factor method. A Central Composite Design (CCD) was used to determine the effect of linear factors (titanium tetrachloride concentration, temperature and leaf extract volume) and their interactions on the synthesis of TiO2 NPs. A total of twenty experiments formulat...
ABSTRACT A new simple novel electrochemical sensing platform based onelectrodeposition ofnano zinc oxide ontomultiwalled carbon nanotubes modified glassy carbon electrode was constructed. The modified electrode was characterized by cyclic voltammetry and electrochemical impedance in a redox probe.The electrode surface area after modification was 0.15 cm2, which was twice large that of a bare glassy carbon electrode. The new fabricated sensor was applied for individual and simultaneous determi...
ABSTRACT The kinetic analysis of three complex reaction networks of catalytic reforming reaction systems has been studied. The complex systems of reaction networks were first fashioned into a system of single reactions. Each single reaction is then delineated into a sequence of elementary reaction steps. The principles of rate determining step, steady state approximations and microscopic reversibility were then involved for necessary simplifications Kinetic and equilibrium parameters for mode...
ABSTRACT An electrochemical sensor based on polyaniline cobalt phtahlocyanito doped with cobalt oxide nanoparticles was developed for the electrocatalytic oxidation of amitrole.FTIR, Electrochemical impedance spectroscopy (EIS) and Bode plots were used in the characterization of the synthesized modifiers CoTCPc, PANI, Co2O3NPs and to ascertain the chemical linkage between CoTCPc and PANI while cyclic voltammetry, linear sweep, chronoamperometry and differential pulse voltammetry were used to ...
ABSTRACT An electrochemical sensor based on nickel tetraamine phthalocyanine and nitrogen doped grapheme oxide (NITAPC-NDGONS (mix)) nanoparticles was developed for the simultaneous electrocatalytic oxidation of vanillin and ascorbic acid. FTIR (Fourier Transimition Infrared), electrochemical impedance spectroscopy (EIS) and Bode plots were used in the characterization of the synthesized modifiers (NITAPC), (GONS-NITAPC) and NITAPC-NDGONS (mix)). Cyclic voltammetry, linear sweep, chronoampero...
ABSTRACT Azo dyes have become an immerging and difficult pollutant to the environment. Industrial activities have resulted in disposal of these toxic dyes in effluent and among them is methyl orange (MO) dye. Proper effluent treatment schemes have become a necessity so as to be able to reduce the potential toxicity issues regarding plant and animal life due to the rise in demand for clean and safe water. Several methods have been applied for the removal and degradation of MO dye but have prov...
ABSTRACT Carbon nanodots (CNDs), nitrogen doped carbon nanodots (n-CNDs) and their composites with cobalt tetra aminophenoxy phthalocyanine nanoparticles (CoTAPhPcNPs) were employed towards the simultaneous detection of aspirin (ASA), ibuprofen (IBU) and indomethacin (INDO). The nanomaterials were characterized by FTIR, UV-Vis, TEM, cyclic voltammetry, electrochemical impedance spectroscopy, linear sweep voltammetry, chronoamperometry and differential pulse voltammetry. CoTAPhPcNPs/n-CNDs-GCE...
ABSTRACT The quest for effective forecasting models to meet the ever growing electricity demand around the globe has heightened and taken a much challenging dimension that cuts across rural and urban communities in under-developed, developing and developed economies. Electric Load Forecasting which is the accurate prediction of both the magnitude and geographical distributions of electrical energy demand over the different periods of planning horizon has become a vital process in the planning...
ABSTRACT A novel maize tassel-ethyl acrylate biopolymer embedded magneticnanohybrid(MTEA-MN)was designed for the adsorption of Cd (II) in batch experiments.Copolymerization parameters such as solvent amount, initiator concentration, monomer concentration, temperature and reaction time on grafting percentage were optimized.Characterization of the adsorbent was byFourier transform infrared spectroscopy (FTIR). The effect of pH, contact time, initial concentration and adsorbent dosage and their ...
ABSTRACT A novel low-temperature glycerolysis process for lowering free fatty acid (FFA) in crude jatropha oil for alkali catalyzed transesterification has been developed. The response surface methodology (RSM) based on the central composite design was used to model and optimize the glycerolysis efficiency under three reaction variables namely; reaction time, temperature and glycerol to oil mass ratio. The optimum conditions for the highest glycerolysis efficiency of 98.67% were found to be ...