OSIFEKO OLAWALE LAWRENCE

Meet OSIFEKO OLAWALE LAWRENCE, an Academic Staff of Lagos State University.

Specialization

Material Chemist

Designation

Lecturer I

Department

Chemistry

Office

At the Chemistry department office

Visiting Hour

Appointment on Visitation important

Research Interest

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.

Qualifications

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

Current Research

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

Research Details

Introduction

The 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/Objective

The study aimed at removing heavy metals [cobalt II, (Co2+); Lead II, (Pb2+) and Cadmium II, (Cd2+)] from aqueous water by the adsorp­tion method.

Methodology

The 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). 

Result

The 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)

Biography

OSIFEKO OLAWALE is a Lecturer I at the Department of Chemistry

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

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