Faculty of Applied and Computer Science : Recent submissions

Now showing items 1-20 of 81

A Comparative study between the prevalence of MTHFR A1298C SNP and homocysteine metabolism in an elderly black South African population

Dippenaar, Luzanne (2018-08)

Background: Cardiovascular diseases are one of the most common causes of death worldwide. This is not only a problem in developed countries, it is of major concern for public health in developing countries as well. Increased ...
Preparation and characterization of Manganese doped iron oxide magnetic nanoparticles coated pine cone powder and its applications in water treatment

Ouma, Immaculate Linda Achiengꞌ (2019-03)

Trivalent arsenic (As(III)) and hexavalent chromium (Cr(VI)) toxicity have necessitated a great deal of research into the remediation of contaminated water. The techniques applied including oxidation, coagulation-flocculation ...
Synthesis, characterization and antimicrobial activity of cobalt and cobalt sulphide nanoparticles against selected microbes that are found in wastewater

Phuti, Moukangoe Getrude (2018)

Water shortages, water pollution and climate changes are highly interrelated global issues. These have raised immense concerns about serious adverse effects on the quality, treatment and re-use of wastewater. A major role ...
Developing a formula for the comparison of athletics performances across gender, age and event boundaries based on South African standards

Bekker, S. W. J. (2018-01)

The author addressed the need of parents, school teachers and athletic coaches to be able to assess the level of performance and to compare performances of individual athletes of either gender and in any age group. This ...
Effect of size and shape of cobalt oxide nanoparticles on the fenton catalytic activity.

Kganyago, Semakaleng Vivian (2019-01)

Water is a limited resource and pollution has become an increasing problem due to industrialization. Aromatic organic pollutants are resistant to biodegradation, and thus chemical methods like the Fenton reaction is required ...
Removal of selected chlorinated phenolic compounds from water sources in Vaal Triangle using HPLC, Macadamia nutshell activated carbon and solid phase extraction

Machedi, Sechaba (2017-12)

In this study, analytical method for determining the chlorinated phenols in water was developed using High Performance Liquid Chromatography. The following four compounds which are 2, 4, 6- Trichlorophenol (2, 4, 6 TCP), ...
Method development for determination and removal of the selected steroids from water sources in selected areas around the Vaal River in South Africa using High performance Liquid Chromatography, Macadamia Activated Carbon and Solid Phase Extraction

Khotha, Doctor Elias (2018)

A simple and rapid method for determination of estrone (E1) and β-estradiol (E2) was developed and validated using high performance liquid chromatography (HPLC). The solutions of standards and sample were prepared with ...
Macadamia nutshell powder grafted with 1,5’-diphenylcarbizide for enhanced removal of Cr(VI ) from aqueous solution

Maremeni, Londolani Charity (2018-08)

Agricultural waste such as Macadamia nutshells are currently receiving more attention for removal of hexavalent chromium (Cr(VI)). However, they have low adsorption capabilities when used in their raw form. In this study, ...
Synthesis, characterization and application of amine-modified Macadamia nutshell adsorbents and ion imprinted polymers for the sequestration of Cr(VI) ions from aqueous solution

Nchoe, Obakeng Boikanyo (2018-08)

Persisting challenges associated with remediation of heavy metals from aqueous media have stirred the need for enhancement of current technologies. Cellulosic agro waste materials (AWM) as well as ion-imprinted polymers ...
Simultaneous sequestration of Cr(VI) and Cr(III) from aqueous solutions by activated carbon and ion-imprinted polymers

Lesaoana, Mahadi (2018-08)

Macadamia activated carbon (MAC) was impregnated with different concentrations of nitric acid and heated under reflux to improve the structural characteristics of the adsorbent for both considerable reduction and enhanced ...
Amino acid-capped metal selenide nanoparticles: their synthesis, characterization, optical and magnetic properties

Mokubung, Kopano Edward (2018-04)

Quantum dots (QDs) have already proven features that can be considered to improve their properties for biological applications. Metal selenide nanoparticles possess semiconducting behaviors that can vary with structural ...
Phytochemical analysis and biological activities of crude extracts from selected Tulbaghia species

Takaidza, Samkeliso (Vaal University of Technology, 2018-12)

The genus Tulbaghia has been used in traditional medicine to treat various ailments such as fever, earache, tuberculosis and esophageal cancer. However, there is limited scientific evidence to support its use. Therefore ...
ZnS and CuxSy nanoparticles from dithiocarbamate ligands

Mnqiwu, Khumblani (2017)

Dithiocarbamate ligands and their complexes has been a subject of interest in various fields but they found much interest in medical applications as potential anti-microbial agents. The dithiocarbamate ligands were used ...
Green synthesis of copper and silver nanoparticles and their antimicrobial activity

Nate, Zondi (Vaal University of Technology, 2018-02)

The present study includes the use of a green synthetic method to prepare copper and silver nanoparticles using chitosan, aqueous extracts of Camellia sinensis, Combretum molle and Melia azedarach linn leaves. This study ...
Users’ perceptions on security of mobile computing for adoption of e-applications in South Africa

Mapande, Fhatuwani Vivian (2018)

The advancement of technology, particularly in the area of mobile computing, revolutionizes the way business is done in many industries such as the education sector, government sector, financial institutions, retail sector ...
Investigation of causes of foaming in industrial waste water treatment and effects of substances in industrial waste water treatment

Maleka, Mamohau Julia (2012-06)

ABSTRACT The research was aimed to study the causes of excessive foaming in a waste water treatment plant. Although the activated sludge process has been adopted to treat this industrial waste water , lots of problems ...
Reduction of ferric and ferrous compounds in the presence of graphite using mechanical alloying

Moloto, Ledwaba Harry (Vaal University of Technology, 2011-05)

Many oxidic iron compounds—iron oxides; oxy-hydroxides and hydroxides—not only play an important role in a variety of disciplines but also serve as a model system of reduction and catalytic reactions. There are more than ...
Synthesis and characterization of pine cone carbon supported iron oxide catalyst for dye and phenol degradation

Mmelesi, Olga Kelebogile (Vaal University of Technology, 2017-06)

Fenton oxidation is classified into two processes, homogeneous and heterogeneous. Homogeneous Fenton oxidation process, have been shown to be efficient in the degradation of organic pollutants. However, it was shown to ...
Synthesis, characterization and application of a novel biosorbent-magnetic nanomaterial cross-linked with cyclodextrin using epichlorohydrin and hexamethylene diisocyanate as adsorbents for heavy metals and organics

Pholosi, Agnes (Vaal University of Technology, 2019-03)

In the present era of water resources scarcity, efficient treatment of wastewater is a major prerequisite especially for growing economy. Numerous approaches have been studied for the development of cheaper and more effective ...
The Photocatalytic degradation of selected phenolic compounds and biological contaminations in the Vaal River in mitigation of fouling of specific polymer membranes

Kotlhao, Kate (2019-04)

Water quality from surface sources is fast deteriorating due to pollution from organic compounds. Among the organic compounds are chlorophenols, which are described as priority pollutants because of their detrimental ...