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12 November 2018 | Story Leonie Bolleurs | Photo Stephen Collett
Inaugural lecture focuses on aspects of soil classification
Prof Cornie Van Huyssteen delivered his inaugural lecture on the topic: ‘The world in a grain of sand’, at the ninth inaugural lecture at the UFS this year.

Humans classify their environment to create order, make it more understandable, aid recollection and to communicate. As important it is for humans to classify their environments, so it is to classify soil, said Prof Cornie van Huyssteen.

Prof Van Huyssteen has studied and recorded data on soil worldwide to find the most appropriate use of land, in among others, the agriculture and mining sector and for urban development. 

It is all about soil

He was vice-chair of the International Union of Soil Sciences working group for the World Reference Base, and president of the Soil Science Society of South Africa. From 1991 to 1999 he worked at the Institute for Soil, Climate and Water of the Agricultural Research Council, where he aided in the land type survey and spatial analysis of soil data.

At his recent inauguration to full professor Prof Van Huyssteen delivered the ninth inaugural lecture at the University of the Free State’s Bloemfontein Campus for 2018, talking about a matter close to his heart, soil. He titled the lecture: ‘The world in a grain of sand’. 

Relevant to irrigation scheduling

A professor in the UFS Department of Soil, Crop and Climate Sciences, Prof Van Huyssteen’s research focuses on the relationship between soil morphology and soil hydrology. It can mostly be applied to hydropedology, wetland delineation, urban development, mining EIAs, irrigation scheduling and soil classification.

Prof Van Huyssteen joined the UFS in 2000, and in 2004, he completed his PhD in Soil Science. He is also author or co-author of 25 reviewed papers.

News Archive

Prof Tredoux turns theories regarding the formation of metals on its head
2013-09-17

 

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

 

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