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02 August 2021
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Story Dr Nitha Ramnath
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Photo Supplied
In this special Women’s Month edition of the Voices from the Free State podcast series, we elevate and celebrate our female voices.
Likeleli Monyamane takes us through her journey as a student at the UFS. Founder of Inspire Innovation Business Consultants, Likeleli is a chartered accountant
based in Lesotho, with a deep passion for skills development and mentorship.
A passion for evidence-based medicine and the notion of value in healthcare is what drives
Dr Anchen Laubscher. Anchen is driven to ensure that healthcare is scientifically
proven, of high quality, cost-effective, and tailored to a patient’s needs.
Karla’s story is one of determination, and her success is the result of two decades of hard work. Although netball is not a professional sport in South Africa and athletes don’t get paid for it – quitting was never an option for
Karla Pretorius.
Enjoy these inspiring stories
here as we celebrate our female voices from the Voices from the Free State podcast series.
For further information regarding the podcast series, or to propose other alumni guests, please email us at
alumnipodcast@ufs.ac.za
For all Voices from the Free State podcasts,
click here.
Prof Tredoux turns theories regarding the formation of metals on its head
2013-09-17
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Prof Marian Tredoux
17 September 2013 |
The latest research conducted by Prof Marian Tredoux of the Department of Geology, in collaboration with her research assistant Bianca Kennedy and their colleagues in Germany, placed established theories regarding how minerals of the platinum-group of elements are formed, under close scrutiny.
The article on this research of which Prof Tredoux is a co-author – ‘Noble metal nanoclusters and nanoparticles precede mineral formation in magmatic sulphide melts’ – was published in Nature Communications on 6 September 2013. It is an online journal for research of the highest quality in the fields of biological, physical and chemical sciences.
This study found that atoms of platinum and arsenic create nanoclusters, long before the mineral sperrylite can crystallise. Thus, the platinum does not occur as a primary sulphur compound. The research was conducted at the Steinmann Institute of the University of Bonn, Germany, as well as here in Bloemfontein.
Monetary support from Inkaba yeAfrica – a German-South African multidisciplinary and intercultural Earth Science collaborative of the National Research Foundation (NRF) – made this research possible. Studies are now also being conducted on other metals in the precious metal group, specifically palladium, rhodium and ruthenium.
The discovery of the nanoclusters and the combination with arsenic can have far-reaching consequences for the platinum mine industry, if it can be utilised to recover a greater amount of platinum ore and therefore less wastage ending up in mine dumps. This will signify optimal mining of a scarce and valuable metal, one of South Africa’s most important export products.
For Prof Tredoux, the research results also prove thoughts she already had some twenty years ago around the forming of platinum minerals. “Researchers laughed in my face, but the evidence had to wait for the development of technology to prove it.” Young researchers were very excited at recent congresses about the findings, since the new models can bring new insights.
“Chemistry researchers have been talking about platinum element clusters in watery environments for quite a while, but it was thought that these would not appear in magmas (molten rock) due to the high temperatures (>1 000 degrees celsius).”
Prof Tredoux has already delivered lectures at congresses in Scotland, Hungary, Sweden and Italy on this research.
Read the article at: http://www.nature.com/ncomms/2013/130906/ncomms3405/full/ncomms3405.html