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29 August 2025 | Story Precious Shamase
One Health research project
Pictured are Prof Steven Belmain, Dr Hayley Thompson, and Prof Lourens Swanepoel during their visit to South Africa to kick off a collaborative One Health research project aimed at addressing rodent-related health risks in townships – an initiative that unites local and international experts in the pursuit of safer, community-driven solutions.

A collaborative research project is underway in South African townships to combat the pervasive rodent problem and its impact on human health. Led by Prof Peter Taylor, Professor-in-Residence in the UFS Afromontane Research Unit and affiliated with the UFS Department of Zoology and Entomology, the initiative brings together experts from the UK's Natural Resources Institute (NRI), including Prof Steven Belmain and Dr Hayley Thompson, and South African institutions such as the UFS and the University of Venda.

This 'One Health' approach acknowledges the interconnectedness of human, animal, and environmental well-being. The team visited laboratory facilities at the UFS campuses in Bloemfontein and Qwaqwa, the latter being near Phuthaditjhaba township – a key research site alongside Lwamando in Limpopo.

The multidisciplinary project involves local farmers and university departments, integrating expertise in advanced techniques such as high-performance liquid chromatography (HPLC) and mass spectrometry, molecular virology and microbiology, genome sequencing, and parasitology. Social scientists, such as Dr Shingirayi Chamisa, a lecturer in the UFS Department of Industrial Psychology, are also involved to understand community perceptions and current rodent control methods, including the impact on mental health.

The research will investigate the health risks associated with rodent infestations, including food contamination with poison residues and fungal toxins, and the transmission of disease to humans and livestock through direct contact or parasites. Practical trials will evaluate methods to reduce food contamination.

Significantly, the project will explore novel and humane rodent control strategies, such as contraceptive baits, offering a safer alternative to rodenticides. Recent concerns about rodenticide-related deaths in townships have increased pressure for safer, ecological solutions.

This research holds significant promise for developing sustainable and effective solutions to mitigate the negative impact of rodent pests on the health and livelihoods of township residents. The international and local collaboration, guided by a holistic 'One Health' perspective, marks a crucial step towards addressing this challenging issue. Prof Taylor expressed his appreciation for the enthusiastic engagement of all collaborators, highlighting the potential for a truly transdisciplinary project to find meaningful and ecologically sound solutions to rodent-borne pathogens and food contamination in South African townships.

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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