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21 August 2019 | Story Thabo Kessah | Photo Thabo Kessah
Keafon Jumbam
Keafon Jumbam is gearing herself for the institutional Three Minute Thesis competition.

Keafon Jumbam is a PhD candidate whose research on food and foxes has won her the first prize of R8 000 in the recent Faculty of Natural and Agricultural Sciences’ Postgraduate Flash Fact Competition. Her brief in the competition was to summarise her research in three minutes, using only one static slide.

“The competition started at departmental level on both campuses. The idea was that the best student in each department is then selected to go for the faculty-level competition on the Bloemfontein Campus. Summarising the entire research into three minutes is no easy feat, but a great way to gauge how well one has mastered your work,” she said.

Far-reaching research

“Thought-provoking presentations on research, ranging from technology to track academic progress, traditional medicine as alternatives to expensive prescriptions, and suggesting insects as food alternatives to curb hunger in this era of severe droughts and food shortages. The competition was tough, but it highlighted the level of research competitiveness on the Qwaqwa Campus. I hope that more students will join in such opportunities to build themselves up and to showcase our research output as Qwaqwa students,” added Jumbam from the Department of Zoology and Entomology.

Institutional finals

Her next challenge is the institutional competition to be held on 23 August 2019, which could qualify her for the national competition.


News Archive

UFS venture cleans up acid mine drainage
2015-07-06

The system that puts oxygen back into the water.

Photo: Supplied

South Africa is one of the most important mining countries in the world, beginning in the 1870s. Although the mining industry has been responsible for significant development and employment, it pollutes the environment and waters sources. Through the joint effort of a well-known mining company, the University of the Free State, and the Technology Innovation Agency (UFS/TIA) SAENSE Group, a new treatment for Acid Mine Drainage (AMD) has been developed.

The system treats the major contaminants found in acid mining wastewater effectively.  
 
The UFS remediation systems use a reservoir tank into which the AMD is pumped. The water then flows passively (without using energy) to the Barium Carbonate Dispersed Alkaline Substrate (BDAS) system. The metals and anions in the AMD react chemically with the barium carbonate and precipitate (form solids). The solids stay in the tank while the clean water is released.

The efficacy and applicability of the research was demonstrated on site in Belfast, Mpumalanga where the team constructed a pilot plant in July 2014. This patented technology has treated 1 814 400 litres of Acid Mine Drainage to date with an outflow water quality that satisfies the South African National Standards (SANS) 241:2006 & 2011 regulations for drinking water.   

Rohan Posthumus from the (UFS/TIA) SAENSE Group said: “At this stage, we do not recommend that the water should be used as drinking water, but certainly it can lower water usage in mines while finding application in dust suppression of washing processes. The team would like to complete a full characterisation of the final released water. There are currently no toxic by-products formed, and even very basic filtration can make the outflow drinking water.”

Prof Esta van Heerden’s research group from the Department of Microbial, Biochemical, and Food Biotechnology has been working on AMD research for some time, but the development of the BDAS system was started in 2013 by post-doctoral student, Dr Julio Castillo, and his junior researcher, Rohan Posthumus.

The data from the BDAS system have led to two publications in peer-reviewed journals as well as a registered patent.

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