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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

Graduates challenged to fulfil their leadership obligations
2015-12-14



Procession frontline: seen making their way to the graduation ceremony are from left: Dr Khotso Mokhele (Chancellor of the UFS), Prof Busisiwe Bhengu (Chairperson of the South African Nursing Council), and Prof Jonathan Jansen (Vice-Chancellor of the UFS).
Photo: Johan Roux

The time for one-dimensional discourse was over, said Professor Busisiwe Bhengu, the guest speaker at this year’s Summer Graduation. Practical implementation of change was the step forward in forging the path into a brighter South Africa future.

During both the morning and afternoon ceremonies held at the University of the Free State (UFS) Bloemfontein Campus on 10 December 2015, the Chairperson of the South African Nursing Council, and Associate Professor at the University of KwaZulu-Natal, challenged the newly-graduated alumni to rise to the occasion, and be a part of the solution to our country’s diverse challenges.

Some of the pervasive hardships she highlighted were human immunodeficiency virus (HIV) and tuberculosis (TB), the escalating number of orphans and child-headed households, and the human resource shortages resulting from an ageing generation which is exiting the employment system through retirement.

Prior to dissolving the congregations, Dr Khotso Mokhele, the Chancellor of the UFS, said: “I was caught by the leadership challenge she [Prof Bhengu] threw out at the graduates because we indeed need courageous, creative and innovative leaders moving forward,” he said.

Dr Mokhele touched on South Africa’s dwindling economy, the leadership issues engulfing the government currently, the #FeesMustFall movement, and how students led a difficult dialogue and dictated the country’s trajectory as regards education, as well as the water scarcity we are facing. In closing, he warned that the graduates had lost the luxury of feeling led because of the fact that they now have a leadership obligation to fulfil.

Highlights of the day

Amongst 102 graduates from the UFS School of Medicine were two brothers from the Free State, Johann and Rudi Westraad who followed each other’s passion to become doctors.

Deputy Registrar at the UFS, Elna Van Pletzen, graduated with a Master’s in Higher Education Studies. Her thesis titled ”The implications of current legislative changes for academic freedom and institutional autonomy of South African higher education institutions”, focused on the amendment of Higher Education and Training Laws Amendment Act of 2012. In it, she tackled the subjects of academic freedom and the relationship between government and higher education institutions. Coincidently, her research was produced at a time when the subject of university autonomy was on the national agenda.

The occasion was not only a celebration of the students; teachers were also recognised for their dedication to quality education. Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS congratulated Dr Louise van den Berg (Faculty of Health Sciences) as well as Naquita Fernandes and Salomien Boshoff (both from the Faculty of Economic and Management Sciences) for their outstanding achievements. At a recent ceremony, Dr Van den Berg received the Vice-Chancellor’s Award for an individual teacher, and the Vice-Chancellor’s Award for the best teaching team was presented to Fernandes and Boshoff.

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