Browsing Natural and Agricultural Sciences by Supervisor "Van der Merwe, E.M. (Elizabet Margaretha)"

Browsing Natural and Agricultural Sciences by Supervisor "Van der Merwe, E.M. (Elizabet Margaretha)"

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  • A thermogravimetric investigation of the synthesis of cobalt fluoride 
    Vilakazi, Benni Mabena (University of Pretoria, 2018)
    Fluorochemicals are valuable organic compounds manufactured by PELCHEM, the chemical manufacturing company of NECSA (The South African Nuclear Energy Corporation of South Africa). Fluorochemicals are manufactured through ...
  • Chemical and mechanical activation of hybrid fly ash cement 
    Du Toit, Grizelda (University of Pretoria, 2018)
    Hybrid fly ash cement is a binder with a composition between that of pozzolanic fly ash cement and alkali activated fly ash cement. Its production requires less cement clinker than ordinary Portland cement, facilitating a ...
  • Improving geological saline reservoir integrity through applied mineral carbonation engineering 
    Mlambo, T.K. (Thembane Kelvin) (University of Pretoria, 2012-11-12)
    The most widely advocated method of carbon capture and storage involves the injection of CO2 into underground geological formations. Key to the development of this geological sequestration technology is the existence of ...
  • Production of calcium carbonate from phosphogypsum wastes 
    Ondo Ndjimbi, Lilian Urlain (University of Pretoria, 2014)
    Phosphogypsum is a waste generated during the production of wet phosphoric acid from phosphate rocks. Numerous studies have attempted to find applications for phosphogypsum, but its composition is generally limiting its ...
  • Silica nanoparticles from South African coal fly ash derived sodium silicate solutions 
    Aphane, Mathibela Elias (University of Pretoria, 2020)
    Silica nanoparticles are one of the most frequently used inorganic support materials for heterogeneous catalyst immobilization. Their high thermal and chemical resistance, and their good sorption properties provided by ...
  • Surface modification of coal fly ash by sodium lauryl sulphate 
    Mathebula, Confidence Lethabo (University of Pretoria, 2013-05-27)
    Thirty million tons of coal fly ash are produced each year in South Africa of which approximately 5% is utilised beneficially. With the growing concern about pollution and increasing landfill costs, the study of the ...