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23 March 2021 | Story Mbali Moiketsi
International Mother Language Day

The Office for International Affairs recently celebrated International Language Day.  This year, we invited all faculties to submit the names of people who would be willing to contribute video clips to educate us about their mother tongue.  The videos submitted were from diverse academic staff members and postdoctoral fellows currently based in different parts of the world.  Extensive research has created this edutainment video, featuring famous language quotes, indigenous languages across the African continent, and business languages used across the African continent. Some of the indigenous languages on the African continent are fading away, caused by colonial influence.

Fun facts:
From 1994 to 2013, South Africa was in the Guinness Book of World Records for most official languages.  These are Afrikaans, English, Ndebele, Sepedi, Sesotho, Swati, Tsonga, Tswana, Venda, Xhosa, and Zulu.

Since the adoption of the 2013 Constitution, Zimbabwe now holds this title with 16 official languages, namely Chewa, Chibarwe, English, Kalanga, Koisan, Nambya, Ndau, Ndebele, Shangani, Shona, Sign Language, Sotho, Tonga, Tswana, Venda, and Xhosa. Zimbabwe therefore now holds the Guinness World Record for the country with the largest number of official languages.  

Albeit the main languages in Zimbabwe are English, Shona and Ndebele, the minor languages are Chewa, Chibarwe, Kalanga, Koisan, Kunda, Lozi, Manyika, Nambya, Ndau, Nsenga, Tsonga-Shangani, Sotho, Tjwao, Tonga, Tswa, Tswana, Venda, and Xhosa.

WATCH: International Mother Language video


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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