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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

Doing what must be done – Fourth Reconciliation Lecture by Colm McGivern
2015-03-17

Colm McGivern
Photo: Johan Roux

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Fourth Reconciliation Lecture: Audio

McGivern: speech (pdf)

The UFS Annual Reconciliation Lecture brings leaders, scholars, and the broader community together in a shared vision for social change and conflict transformation. This event is organised by Prof Pumla Gobodo-Madikizela, Senior Research Professor in Trauma, Forgiveness and Reconciliation Studies. In 2012, Nadine Gordimer, Nobel Prize Laureate for Literature, was the first speaker to deliver the lecture. This year, at the Fourth Annual Reconciliation Lecture held on the Bloemfontein Campus, Colm McGivern, Director of the British Council in South Africa, continued the legacy.

Doing what must be done
'I get down on my knees and do what must be done
And kiss Achilles' hand, the killer of my son.'
(Ceasefire by Michael Longley)

Using this poem to powerful effect, McGivern showed what reconciliation asks of each and every citizen: to do what must be done. “I think that peace and reconciliation are mutually dependent,” he said. “You can’t maintain one over the long run without attending to the other.”

South Africa’s history has tracked along a similar path to that of Northern Ireland. “And lessons from other places can be powerful and instructive,” McGivern said. Sometimes reconciliation needs a focal point for people to clearly see its power, as Madiba has for South Africa. But at other times, reconciliation needs everyday citizens to “kiss Achilles’ hand’”.

McGivern mentioned Candice Mama and her family, who  have recently forgiven Eugene de Kock,. Or as Gordon Wilson did after his daughter, Mary, died holding his hand in the 1987 Enniskillen bombing in Ireland. In a TV interview mere hours later, Wilson forgave the killers of his daughter, and  hope rippled across Ireland.

Learning from others
“People’s capability,” McGivern said, “to reconcile their own differences, however stark, can be boosted by learning from others in other places, internationally or perhaps just beyond their own identity group.” A powerful truth now being pursued in a joined initiative between the British Council and Teaching Divided Histories.

As an example, McGivern referred to the short film, ‘In Peace Apart’ where one Catholic and one Protestant girl decide to swop school uniforms. Harnessing the potential of moving images and digital media, the initiative enables teachers to explore contentious issues of history and identity in the classroom. This international field of conflict education draws lessons “from activities in Sierra Leone, India, Lebanon, and, of course, South Africa.”

Resuscitation of the national spirit of magnanimity
Here in South Africa, Archbishop Desmund Tutu has “called for a resuscitation of the national spirit of magnanimity and common purpose”, McGivern quoted. In the book, 80 Moments that Shaped the World, South Africa appears four times, McGivern pointed out. And as Archbishop Tutu wrote in the foreword of the book, “no act is unforgivable; no person or country is beyond redemption and the world needs more people to reach out to one another.”

 

For more information or enquiries contact news@ufs.ac.za.

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