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06 April 2018 Photo Rulanzen Martin
Researchers to represent UFS at BRICS Summit
From the left: Dr Thulisile Mphambukeli, leader of the BRICS research team that is exploring the political economy of water and food security, and her research partner, Dr Victor Okorie.


A Brazil, Russia, India, China and South Africa (BRICS) delegation is to hold the 10th Annual BRICS Summit in the last week of May 2018 in Johannesburg. Dr Thulisile Mphambukeli, leader of the University of the Free State (UFS) research team alongside Dr Victor Okorie from the Department of Urban and Regional Planning, in collaboration with Prof Lere Amusan of North-West University, will ensure that water and food security is a prominent feature on the gathering’s agenda.
 
First, the project titled: “Exploring the political economy of water and food security nexus in BRICS and Africa” will debut at the National Institute for the Humanities and Social Sciences BRICS Think Tank Forum”.

According to Dr Mphambukeli, the key to water security is attitudinal change by means of education and conscientisation. This, she is adamant about, holds the potential to drive behavioural adjustments in the way society interacts with water.
 
Genetic and social approaches
Dr Okorie asserts that if strides towards reducing the demand for water were to be made, research efforts should be geared towards effecting changes at DNA level. Meaning we need to explore waterwise ways that enable crops and animals to thrive optimally. 

The project also looks at social dimensions of water such as flushing a toilet. “Research activities on redesigning toilets, especially the urinal, where more than nine litres of water are used to flush less than one cubic centimetre of urine, are timely in the context of managing water and the food nexus crises,” said Dr Okorie.

Combining the genetic and social approaches would allow us to produce more with a smaller water footprint. This can be made possible by implementing precision agriculture which is about estimating and applying exact quantities of water and nutrients needed for the production of crops or the raising of livestock.

Paradigm shifting policies

Prof Amusan said the team intended to propose functional solutions that take the quality of water into consideration. Equitable production and distribution of water depends on endorsing policies of co-production between citizens, governments and the public sector. BRICS member states mutually consider water and food security as an issue of paramount significance, hence its feature on this prestigious summit’s agenda.

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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