OSIFEKO OLAWALE LAWRENCE

Chemistry

At the Chemistry department office

Appointment on Visitation important

Topic: Electospinning Techniques

Description: I am a material chemist, who had been exposed to electrospinning techniques, synthesis of organometallic compounds photosensitizers , fabrications of nanomaterials magnetic nanoparticles, quantum dots and gold nanomaterials , conjugations of the semiconductors with various organometallic complexes, and biological applications of organometallic complexes; which are non-invasive, non-toxic to biological substance except when activated by photon of appropriate wavelength which then result in cytosis of target micro-organism by photoinactivations of the micro-organisms in water and photodegradations of pollutant in water and published in area of fabrications of electrospun fibre as a solid support for photo-inactivation of bacteria. Our research focus is to synthesize a novel photosensitiser that can be embedded in a polymer and electrospun to a non-woven fibre.

#	Certificate	School	Year
1.	Ph.D (CHEMISTRY)	CHEMISTRY, RHODES UNIVERSITY	2017

Cassava Mash as an Adsorbent for the removal of some Heavy Metals from aqueous media

IntroductionThe various environmental issues in our society are wholly and partially linked to industrial revolutions and quest for the development of human. Many industrial processes and operations generate stack emission, solid waste and sludge that contain heavy metals which enter the atmosphere and find their way into aquatic and terrestrial ecosystems. The biosorption techniques is one of the recent approaches inefficient removal of heavy metals from aqueous solution. Aim/ObjectiveThe study aimed at removing heavy metals cobalt II, Co2+ ; Lead II, Pb2+ and Cadmium II, Cd2+ from aqueous water by the adsorp tion method. MethodologyThe raw milled cassava mash was subjected to air-drying and crushed to powdered form for suitable used. Adsorption experiments were carried out on the effect of pH, contact time and sorbate and some other characterizations such as scanning electron microscopy SEM , thermogravimetry analysis TGA and Fourier transform infrared spectroscopy FTIR .ResultThe FTIR analysis suggests the possibility of the participation of Carboxyl groups in metal uptake chemisorption . The studies indicated that Cassava spent mash as the biomass has the potential application for the remediation and removal of metal-polluted waters. The Effect of pH has the highest percentage removal of 97% to other parameters tested. Contribution to knowledge/Society The effect of Sorbate concentration for Pb2+has the highest percentage removal with 95% against other heavy metals. While Co2+has the highest percentage of removal in the experiment for the effect of contact time. The adsorption studies, of the biomass Cassava mash , exhibit good response to the fitted isotherms Langmuir, Freundlich, and Temkin

OSIFEKO OLAWALE is a Senior Lecturer at the Department of Chemistry

OSIFEKO has a Ph.D in CHEMISTRY from CHEMISTRY, RHODES UNIVERSITY