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10 November 2025 | Story Precious Shamase | Photo Supplied
Zandile Mncube
Dr Zandile Mncube presenting her research at the International Mountain Conference (IMC2025) at the University of Innsbruck, Austria.

In a remarkable milestone for both her academic and personal journey, Dr Zandile Mncube, a 27-year-old newly conferred PhD graduate from the University of the Free State (UFS), recently presented her research at the prestigious International Mountain Conference (IMC2025), hosted by the University of Innsbruck, Austria. The event marked not only her debut on the global research stage but also her first international trip and first flight – an experience she described as transformative. 

 

A mountain of research: From UFS weather stations to the global stage

Dr Mncube's journey to this international platform began with encouragement from Prof Ralph Clark, Director of the Afromontane Research Unit, and Dr Melissa Hansen, Lecturer in the Department of Geography, who recognised her potential and urged her to submit an abstract to the conference. 

"Prof Clark proposed that I write an abstract for this conference," Dr Mncube explained. “I had been managing the UFS weather stations and had just begun using their data, so I based my abstract on that work.” 

Her submission was accepted, earning her the opportunity to showcase her research alongside an impressive array of global scholars. The IMC2025, held biennially, brings together experts from across the world to discuss diverse aspects of mountain studies. Dr Mncube formed part of a strong South African delegation that included two students from UFS and one from the University of Cape Town (UCT).

"It was inspiring to see how diverse and multidisciplinary the field is," she said. "It was good to see that, as South Africans, we do fit into the global research stage and can hold our own through the quality of our work.”  

 

Vision for the future: expanding research horizons 

Having been part of the UFS community since 2017 - serving in various roles from student assistant to her current practical and research position – Dr Mncube is now looking ahead to further her research career.

"I want to explore more on the research side of things," she shared. “While I’ve gained valuable experience that could lead to lecturing, my immediate goal is to deepen my involvement in research and fieldwork within Geography.”   

 

A transformative experience and a call for greater support

Describing her participation at the IMC as a "transformative experience, both professionally and personally," Dr Mncube reflected on how it broadened her understanding of global scientific collaboration and highlighted the vital contribution of African researchers. 

She noted there remain "notable gaps in data and contextual understanding that African researchers are uniquely positioned to address," particularly in underrepresented mountain regions.

Dr Mncube strongly advocates for more South African students to be supported in attending international conferences. She observed that several of her peers at the IMC had earned recognition through the Southern African Mountain Conference 2025 (SAMC), further illustrating the value of regional and international engagement. 

"If more students are supported to attend conferences like IMC, it could open doors for them to engage in global research and collaborations that extend far beyond our borders," she said. 

Expressing her heartfelt appreciation, she concluded by thanking Prof Clark and Dr Hansen for their guidance and support, which made her international debut possible.

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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