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25 August 2025 | Story Martinette Brits | Photo Stephen Collett
Prof Elizabeth Erasmus
Prof Elizabeth Erasmus during her inaugural lecture, Molecules of Change: Chemistry for a Better Tomorrow, on 20 August, highlighting how innovative chemistry can turn waste into value and promote sustainable solutions.

With climate change, resource scarcity, and environmental pollution among the most pressing challenges of our time, Prof Elizabeth (Lizette) Erasmus used her inaugural lecture on Wednesday, 20 August to show how chemistry can provide powerful, practical answers. In her lecture, Molecules of Change: Chemistry for a Better Tomorrow, she traced her journey from fundamental research to pioneering innovations that turn waste into value, protect ecosystems, and improve food security.

During her talk, Prof Erasmus – Researcher in the Department of Chemistry – recalled a moment in 2018 that reshaped her career trajectory. While preparing a Sasol research grant on copper oxide nanoparticles, an entrepreneur assisting with the proposal posed a deceptively simple challenge: “So what?” “Although upsetting at first, those two words completely reshaped my outlook,” she explained. “They inspired my journey from purely academic chemistry towards more applied, impactful research – with the mission of not only advancing science, but of also improving society and the environment.”

 

From fundamental science to global solutions

Prof Erasmus began her career in organometallic chemistry, preparing and characterising complex molecules to understand their reactivity and physical properties. Later, her focus shifted to heterogeneous catalysis, where she explored nanomaterials and surface chemistry.

Her research has since evolved towards developing sustainable technologies that address urgent global challenges. One example is agricultural innovation: using green solvents to extract cellulose from wattle tree bark to create biodegradable superabsorbent polymers. “Unlike the polyacrylates in baby diapers, these SAPs degrade into nutrients for soil microbes and plants,” she explained. “By loading them with fertiliser, we develop slow-release, water-retaining materials that improve agricultural sustainability.”

Other projects include producing biochar to restore degraded soils, creating natural growth enhancers such as wood vinegar, and designing an ‘ultimate fertiliser’ that combines these products for long-term soil health. Her group also works on environmental remediation, developing hydrophobic sponges to absorb oil spills, repurposing building waste to clean polluted water, and using innovative chemistry to convert carbon dioxide into valuable products.

“We are even looking at one of the fastest-growing waste streams: e-waste,” Prof Erasmus noted. “With more gold per ton than natural ore, e-waste represents both a challenge and an opportunity. By developing porous absorbent materials, we can selectively capture and reduce gold ions directly to metallic gold – recovering a precious resource from waste.”

She concluded by crediting her team and collaborators: “This, however, is only the tip of the iceberg. The bulk of the work lies beneath the surface, carried out by dedicated students, collaborators, mentors, colleagues, friends, and family. I owe them my deepest gratitude, for they are the ones who truly sustain this journey of transforming chemistry into solutions for a better world.”

 

About Prof Erasmus

Prof Elizabeth (Lizette) Erasmus obtained all her degrees at the University of the Free State: a BSc (2001), BSc Honours in Chemistry (2002), MSc in Chemistry (2003), and a PhD in Chemistry (2005). She has published more than 80 research papers, holds an H-index of 21, and has extensive experience in supervising MSc and PhD students.

After serving as a senior researcher at the CSIR, she returned to academia at the UFS, where her international collaborations in the Netherlands and at UC Davis broadened her focus from organometallic chemistry to heterogeneous catalysis and nanochemistry. Her expertise spans organometallic chemistry, electrochemistry, surface characterisation, and nanomaterials.

News Archive

Dean of the Faculty of Law delivers farewell lecture
2013-12-04

Prof Johan Henning, Dean of the Faculty of Law at the University of the Free State (UFS), delivered his farewell lecture during an event attended by distinguished guests from law circles in Bloemfontein, staff from the faculty, as well as family and friends.

The topic of his farewell lecture was: From leonine to universal partnerships. This theme was also the focus of his inaugural lecture and his later research. “It was a privilege to have been part of the development of universal partnership law,” Prof Henning said.

During the event, Prof Henning was honoured by colleagues, as well as members of the law profession, for his contribution to the academy. Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS, thanked Prof Henning for his part in preparing a new generation of academics for the future.

Prof Elizabeth Snyman-Van Deventer from the Department of Mercantile Law, described Prof Henning as someone with an excellent knowledge of history, especially with regard to the Anglo-Boer War and the World Wars. “He is also one of only a few academics of which four postgraduate students became professors. He has lots of empathy with other people and, despite his long list of academic achievements, he is a very humble man. Two of his outstanding characteristics are his humanity and his modesty,” said Prof Snyman-Van Deventer.

Judge Faan Hancke, former chairperson of the UFS Council and Judge of the Supreme Court, said Prof Henning is a multi-faceted person. “He is an incredible academic who has published widely and is the author of several textbooks. He is also editor of a number of journals and serves on the editorial board of several publications. I have great admiration for his academic excellence and his absolute knowledge of partnership law. He is the best in South Africa and is also highly regarded internationally in this aspect of the law (he was, among others, director of the Centre for Comparative Partnership and Company Law at the Institute of Advanced Legal Studies of the University of London). He is the ideal academic, who has achieved the highest rating in his specialist field of Mercantile Law in South Africa, namely a B1 received in 2012, and he is an excellent dean,” Judge Hancke said.

Prof Henning has a long association with the UFS. In 1968 he reported as a first-year student. Later, in 1974, he was appointed in the Department of Mercantile Law on a temporary basis. In 1998 he was appointed as Dean of the Faculty of Law. Some of the highlights in his career include his appointment as African representative of CIDOEC, Jesus College, Cambridge, and becoming the first South African being awarded an honorary fellowship to the Society of Advanced Legal Studies in Brittain, as well as the American Order of the Coif.

Prof Henning will continue his partnership with the university in 2014, acting as dean and continuing his research.

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