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09 December 2022 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Dr Refilwe Mogale
Dr Refilwe Mogale received her PhD in Chemistry. She is fascinated by the ability of chemistry and science in general to solve some of the world’s most pressing issues, such as water scarcity.

“Chemistry chose me,” says Dr Refilwe Mogale, who wanted to enrol for Psychology years ago when she decided to study at the University of the Free State (UFS). 

“On the day of registration, however, as I was standing in the queue, something inside me said this was not the right choice for me. Ultimately, I chose my second option, which was a BSc degree majoring in biology, physics, and chemistry.”

“Once I started the BSc programme, I gravitated towards chemistry, and as difficult as it was juggling classes and six-hour practical sessions, I loved it. I am fascinated by the ability of chemistry and science in general to solve some of the world’s most pressing issues, such as water scarcity, alternative generation, access to antibacterial hygiene products, as well as novel strategies to cure diseases, among many other things.”

The UFS awarded Dr Mogale a PhD in Chemistry on 9 December 2022.

Addressing a global challenge

Being passionate about applied chemistry – where scientific research can be used to create products to address everyday problems – Dr Mogale focused her thesis on Aluminium- and Zirconium-based metal organic frameworks with azobenzene and stilbene dicarboxylate ligands for use in wastewater treatment. 

She has also published multiple articles on topics of environmental chemistry and wastewater management in international journals. 

Dr Mogale is of the opinion that water pollution by financially lucrative industries and access to clean drinkable water is one of our planet’s most challenging environmental and health issues. “The waste generated by some of the industries that contribute heavily to our country’s economy, such as the textile, agricultural, and medical industries, may end up in the limited drinking water resources we have. I chose my research topic because I wanted to positively contribute to this global challenge,” she says.

“My research was based on making highly porous metal-organic frameworks (MOF) to be used in the wastewater treatment technique called adsorption,” explains Dr Mogale, describing MOFs as “really cool three-dimensional ‘sponges’ that can suck up very high amounts of gases and pollutants, trapping them in their pores. These trapped materials can later be released from the pores to be re-used when MOFs are exposed to certain stimuli.”

She continues, “Low cost and simplicity make this method attractive for industrial use. Considering our current energy crisis, other methods are not ideal, since they require large amounts of energy.” 

Focused on developing highly effective adsorbent for wastewater purification systems, Dr Mogale synthesised a novel MOF with one of the highest adsorption capacities compared to existing counterparts.

According to her, should MOFs with their incredibly high surface areas – which allow them to absorb more waste than their existing counterparts – be implemented in wastewater purification systems, they would be able to address the environmental issue of water pollution and the health issue of access to drinkable water.

Tackling everyday societal issues

She is currently doing a postdoctoral fellowship in the UFS Department of Chemistry – to broaden her knowledge in chemistry beyond MOFs. Her plans are, however, to transition to industry and ultimately entrepreneurship, where she will be able to develop scientific products that can tackle everyday societal issues. 

Dr Mogale dreams of adding value to society by practically contributing to the water crisis issue through the development of low-cost water generation and purification products.

News Archive

Vishuis’s fourth Varsity Cup victory about more than rugby
2016-04-15

Description: Vishuis Tags: Vishuis

House Abraham Fischer, a residence from the University of the Free State, is the most successful team in the history of the Varsity Cup. Vishuis beat Patria (Pukke) in the 2016 final of the tournament.
Photo: SASPA
 

For Vishuis, it is about more than just rugby.

This is what Henco Posthumus, captain of House Abraham Fischer’s rugby team, had to say after his team was crowned the national Varsity Cup champions for an incredible fourth time. According to the flyhalf, the title of the leading residence team in the country is “special for the guys”.

Vishuis is the most successful residence team in the history of the tournament. Apart from their four titles, they have played in a total of five Varsity Cup finals.

On 11 April 2016, the residence from the University of the Free State (UFS) launched a great comeback in Stellenbosch to beat Patria (Pukke) by 37-29. This victory ensured that Vishuis was unbeaten in 2016.

Great fighting spirit


The Kovsies started off well against Patria, but were behind 16-29 shortly after break, and had to “delve deep”, according to Posthumus. “To be behind in this way is not what one would prefer. For some reason, we have been in similar situations before, and we know how to make a comeback,” he said.

“We looked one another in the eye and decided that we are not going to lose again in the final.” In last year’s final in Bloemfontein, when Posthumus played at fullback, Vishuis got stuck against Mopanie (Tuks) at the end of the match, and they wanted to prevent this from happening again.

Heymans a hero


According to the Vishuis captain, one of his team’s assistant coaches, Franco (Vaatjie) van der Merwe, spoke harshly to the players when they were behind. The victory was clinched in the dying moments, with the second try of scrumhalf, Ruben Heymans, when the score was 29 points each. Heymans was a star, and the well-deserved Man of the Match.

Posthumus said it is a great privilege to carry the title of Varsity Cup champions. His team has worked hard to reach the top.

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