Ojo O. Fatoba

University of the Western Cape

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Leslie Petrik

University of the Western Cape

Wilson M. Gitari

University of Venda

Jimoh Oladejo Tijani

Federal University of Technology

Omotola Babajide

Cape Peninsula University of Technology

Nicholas M. Musyoka

Ningbo University

Omoniyi Pereao

Cape Peninsula University of Technology

R. O. Akinyeye

Ekiti State University

Godfrey Madzivire

University of South Africa

Alexander Nechaev

Institute for Nuclear Research

Katri Laatikainen

Lappeenranta-Lahti University of Technology

Cooperative Institutions

University of the Western Cape

Cape Peninsula University of Technology

Joint Institute for Nuclear Research

Council for Scientific and Industrial Research

Sultan Qaboos University

Russian Academy of Sciences

Stellenbosch University

National Institute of Research and Development for Optoelectronics

National Research Tomsk State University

Ekiti State University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

ELEMENTAL COMPOSITION OF FLY ASH: A COMPARATIVE STUDY USING NUCLEAR AND RELATED ANALYTICAL TECHNIQUES

Chemia, Dydaktyka, Ekologia, Metrologia (2013)

Chuks Paul Eze Ojo O. Fatoba Godfrey Madzivire Tatyna M. Ostrovnaya Leslie Petrik

Epithermal neutron activation analysis along with ICP-OES, LA ICP-MS, and XRF were used to determine the elemental composition of coal fly ash from the Malta coal power station in the Mpumalanga province of South Africa. A total of 54 major, trac e and rare earth elements were obtained by the four analytical techniques. The results were compared and the discr epancies discussed to show the merits and drawbacks of each of the techniques. It was shown that the elemental content of this particular coal fly ash are of the same order as the NIST standard reference material Coal Fly Ash 1 633b.

Neutron Activation Analysis

NIST

Source

Cite

Citations (2)

Mobility and Transport of Inorganic Species in Weathered Hydraulic Disposed Coal Fly Ash: An Insight from Geochemical Fractionation and Statistical Evalu- ation

Energy science and technology (2012)

Segun A. Akinyemi Olumuyiwa Idowu Ojo Wilson M. Gitari A. Akinlua Ojo O. Fatoba

A large volume of coal fly ash generated through combustion process has raised environmental concerns due to possible release of potentially toxic species to the surface and groundwater systems. The chemical partitioning and mobility of elements in the hydraulic disposed ash dump was investigated using modified sequential extraction scheme. The geochemical distribution of the investigated elements in 33 drilled core samples was determined by x-ray fluorescence and inductively coupled plasma mass spectrometry. The ternary plot of major elements as determined by XRF showed that hydraulic disposed ash cores are sialic, ferrosialic and ferrocalsialic in chemical composition. The relationship between SiO2 and chemical index of alteration (CIA) showed low, moderate to high degree of weathering. These chemical compositions and degree of chemical weathering depend on the ash sampling point and ash interaction chemistry. The Na + and K

10.3968/j.est.1923847920120301.154

Cite

Citations (1)

Leaching and antimicrobial properties of silver nanoparticles loaded onto natural zeolite clinoptilolite by ion exchange and wet impregnation

Journal of Environmental Science and Health Part A (2015)

Roland Missengue Nicholas M. Musyoka Godfrey Madzivire Omotola Babajide Ojo O. Fatoba

This study aimed to compare the leaching and antimicrobial properties of silver that was loaded onto the natural zeolite clinoptilolite by ion exchange and wet impregnation. Silver ions were reduced using sodium borohydride (NaBH4). The leaching of silver from the prepared silver-clinoptilolite (Ag-EHC) nanocomposite samples and their antimicrobial activity on Escherichia coli Epi 300 were investigated. It was observed that the percentage of silver loaded onto EHC depended on the loading procedure and the concentration of silver precursor used. Up to 87% of silver was loaded onto EHC by wet impregnation. The size of synthesized silver nanoparticles varied between 8.71-72.67 nm and 7.93-73.91 nm when silver was loaded by ion exchange and wet impregnation, respectively. The antimicrobial activity of the prepared nanocomposite samples was related to the concentration of silver precursor used, the leaching rate and the size of silver nanoparticles obtained after reduction. However, only in the case of the nanocomposite sample (Ag-WEHC) obtained after loading 43.80 ± 1.90 µg of Ag per gram zeolite through wet impregnation was the leaching rate lower than 0.1 mg L-1 limit recommended by WHO, with an acceptable microbial killing effect.

Clinoptilolite

Silver nanoparticle

Sodium borohydride

10.1080/10934529.2015.1087731

Cite

Citations (18)

Pharmaceuticals, endocrine disruptors, personal care products, nanomaterials and perfluorinated pollutants: a review

Environmental Chemistry Letters (2015)

Jimoh Oladejo Tijani Ojo O. Fatoba Omotola Babajide Leslie Petrik

Personal care

10.1007/s10311-015-0537-z

Cite

Citations (403)

Rare earth elements removal techniques from water/wastewater: a review

Desalination and Water Treatment (2018)

Omoniyi Pereao Chris Ademola Bode-Aluko Ojo O. Fatoba Katri Laatikainen Leslie Petrik

The rare-earth elements (REEs) remain very important due to the growing increase in their demand and for their critical and indispensable use in many high-tech industries today.This growing demand for REEs has led to an increased environmental exposure and water pollution from numerous REEs commercial products and as a result, the recovery of REEs is a significant issue that requires appropriate consideration.There are diverse and various strategic techniques available to remove metal ions from aqueous solutions, but nanofiber adsorbent appears to be quite innovative due to their outstanding characteristics such as cost effectiveness, flexibility, high surface area, porosity, and the portable nature which makes them a better choice for potential adsorbent applications.This review presents a brief view on several typical removal techniques, new developments and applicable examples of the various technologies used for the removal of rare earth elements from water/ wastewater solutions.The review highlights these developments with a particular focus on innovative physicochemical removal processes like adsorption as the process techniques most widely used.

10.5004/dwt.2018.22844

Cite

Citations (60)

Review of the methods for determination of reactive oxygen species and suggestion for their application in advanced oxidation induced by dielectric barrier discharges

Environmental Science and Pollution Research (2018)

Emile Salomon Massima Mouele Ojo O. Fatoba Omotola Babajide Kassim Olasunkanmi Badmus Leslie Petrik

Human decontamination

Nonthermal plasma

Hydroxyl radical

10.1007/s11356-018-1392-9

Cite

Citations (34)