OSUNDIYA OLUBUNMI MEDINAT

Chemistry

At the Chemistry department office

Appointment on Visitation important

Topic: Studies Of Surfactant Drug Interactions; Adsorption Of Heavy Metals Using Agro-adsorbents; Evaluation Of Heavy Metals Load In Food And Potable Water

Description: My research area is centered on surface chemistry with emphasis on surfactants/ micelles, adsorption studies and their thermodynamic and kinetic behaviour. Surfactant-micelle has been discovered as a better alternative for the dissolution of lipophilic drugs such as amitriptyline hydrochloride, tetracycline hydrochloride monohydrate for prompt drug delivery in biological fluids, cleaning agents, herbicide formulation and oil spill cleansing. The use of some surfactants, such as CTAB, SDS, TTAB, DTAB etc to obtain drug-micellar conjugate in single and mixed phases is of immense value for developing better drugs that can enhance biological events. The values of the critical micelle concentration CMC--the most important parameter in surfactant studies , and other micellar parameters can be obtained from the analysis of the conductance data using Boltzmann sigmoid model, Rubigh mode, and some statistical software. In addition, the use of adsorption technology for environmental cleanup is of utmost importance for environmental preservation, and human wellbeing. Specifically, agro-adsorbents such as rice husk, walnut shell, and Phoenix dactylifera L. have proven to be efficient in the removal of toxic heavy metals from effluent of different origin.Techniques such XRD, EDS, FTIR, SEM, TEM, UV-Visible and some adsorption models, such as Temkin, Langmuir, and Freundlich are required for the characterization of the process. The determination of the energetics of the system also play an important role in predicting the stability of the surface chemistry reactions. Furthermore, environment is often placed under burden of pollutant load as a result of ever increasing anthropogenic activities. This consequently lead to environmental degradation, biodiversity loss. Hence, food and water safety for good health and wellbeing are also of interest in order to address the United Nation Sustainable Goals 2, 6, 3 .

#	Certificate	School	Year
1.	Ph.D (Physical Chemistry)	Adekunle Ajasin University, Akungba-Akoko, Ondo State	2016

Kinetic And Equilibrium Modeling For Adsorption Of Methylene Blue And Indigo Carmine Dyes From Wastewater Using Silver Nanoparticles

The disposal of wastewater from dyeing process is a major concern across the globe as it leads to environmental degradation and threat to well-being. AIM: To synthesize AgNPs using Momordica Charantia L for the removal of Methylene Blue dye MBD and Indigo Carmine dye ICD from synthetic wastewater. METHODOLOGY: AgNPs were synthesized and characterized using XRD, SEM, TEM, EDX, UV-Vis Spectroscopy, BET and TGA-DTA. RESULTS: The XRD spectrum of AgNPs indicating a sharp intense peak at 32.06 two theta revealing its crystalline nature. EDX results of AgNPs showed that silver had the highest percentage of 79.93% by weight and 54.92% by atom, respectively. The UV-Visible spectra revealed a distinct peak at 420 nm for AgNPs. The SEM, BET and TGA results revealed the particulate arrangement, surface area of 46.366 m2/g with a pore diameter of 2.84 nm and a single-step decomposition of the AgNPs. The TEM analysis revealed the particle size from 9.22 nm to 52.60 nm. The DTA result indicated that the reaction was exothermic. The effect of temperature, pH, contact time, dosage and initial metal concentration on the adsorption of MBD and ICD from synthetic wastewater were examined through batch adsorption technique. The optimum removal of MBD and ICD was found at pH 9 and 5 respectively. Isotherm studies were conducted using Langmuir, Freundlich and Temkin isotherm models. The Langmuir isotherm model had the best fit with the highest regression coefficient R2 values of 0.9954 and 0.9981 for MBD and ICD respectively. The kinetic data agreed with the pseudo second-order equation suggesting a chemisorption adsorption CONTRIBUTION TO KNOWLEDGE: The adsorption capacity showed that the green synthesized AgNPs using Momordica Charantia L. cam served as an efficient, cost-effective, eco-friendly adsorbent for environmental remediation of wastewater from textile finishing processes

OSUNDIYA MEDINAT is a Senior Lecturer at the Department of Chemistry

OSUNDIYA has a Ph.D in Physical Chemistry from Adekunle Ajasin University, Akungba-Akoko, Ondo State