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16 April 2025 | Story Precious Shamase | Photo Supplied
Qwaqwa NAS Achievements
From left to right Prof Richard Ocaya is an Associate Professor in the Department of Physics, Dr Tebogo Motsei and Dr Kamohelo Tshabalala

The Faculty of Natural and Agricultural Sciences (NAS) at the University of the Free State (UFS) Qwaqwa Campus is celebrating a year of remarkable achievements, showcasing the dedication and brilliance of its students and faculty. The 2024 academic year has been marked by outstanding academic performance, prestigious awards, and groundbreaking research, solidifying the faculty's commitment to excellence.


Academic excellence shines bright

The faculty's commitment to rigorous academic standards has yielded impressive results. This year, four doctoral candidates successfully obtained their PhDs, contributing valuable research to their respective fields. Furthermore, the dedication of the honours and master’s students was evident in their exceptional performance. Out of 25 honours students, an impressive 11 achieved distinctions, demonstrating their mastery of their subjects. Similarly, 5 out of 10 master’s students passed with distinctions, a testament to their advanced research capabilities and academic prowess.


Dr Tebogo Motsei: A beacon of innovation and excellence

Among the faculty's many successes, the achievement of Dr Tebogo Motsei stands out as a testament to the calibre of talent being nurtured on the UFS Qwaqwa Campus. Dr Motsei, who recently graduated from the campus, was awarded the prestigious CV Raman Scholarship by the Government of the Republic of India – a recognition bestowed upon only the most promising postgraduate students.

This highly competitive scholarship, named after the Nobel prize-winning physicist Chandrasekhara Venkata Raman, provided recipients with a six-month research opportunity in India. Dr Motsei conducted her research at the esteemed Central Electrochemical Research Institute (CECRI), under the guidance of Prof Arul Manuel Stephan and Prof Sabu Thomas, Vice-Chancellor of the Mahatma Gandhi University. CECRI – one of the most difficult Indian institutes to get admitted into – is part of the Council for Scientific and Industrial Research (CSIR).

Dr Motsei’s research focused on sodium-ion batteries and supercapacitors with lithium-sulphur integration, resulting in significant advancements in energy storage devices. Her innovative work has the potential to revolutionise the field, contributing to more efficient and sustainable energy solutions.   

Adding to her achievements, Dr Motsei also established Lesedi Innovations Pty, a company dedicated to the manufacturing of button batteries and cells of the CR2032 and 18650 form factors. This entrepreneurial endeavour highlights her commitment to translating research into practical applications that benefit society.

For her PhD studies, she was supervised by Prof Richard Ocaya in the Department of Physics, and co-supervised by Dr Kamohelo Tshabalala, Senior Lecturer in the Department of Physics. Prof Ocaya, proud of Motsei’s achievements, believes that this fellowship not only serves as a great motivation for students – especially on the Qwaqwa Campus – but also highlights the global relevance of the UFS, particularly the Department of Physics.


A message of pride and congratulations

Prof Aliza le Roux, Assistant Dean of the Faculty of Natural and Agricultural Sciences, expressed her immense pride in the students and staff. "I would like to congratulate the NAS students and staff members on this fantastic achievement – it’s a sign of people going out of their way to do their best and make their research work despite any obstacles thrown in their way. These distinctions show that we have smart, dedicated, creative people in NAS, and I’m very proud of all of them. For students, this means great opportunities ahead, and for staff, it is a sure sign that they did something right in their mentorship and teaching. Thank you to this wonderful team," concluded Prof Le Roux.

The UFS Qwaqwa Campus congratulates all the graduates, distinguished students, and dedicated staff of the Faculty of Natural and Agricultural Sciences. Their accomplishments are a testament to the university's commitment to fostering academic excellence and innovation. The faculty continues to fly the UFS flag high, inspiring future generations of scientists and researchers.

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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