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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

Lecture by Judge Albie Sachs: ‘Sites of memory, sites of conscience’
2015-03-23

Judge Albie Sachs

Human rights activist and former Constitutional Court Judge, Albie Sachs, will deliver a public lecture on the Bloemfontein Campus. The topic of his discussion will be ‘Sites of memory, sites of conscience’. This lecture will form part of a series that focuses on how the creative arts represent trauma and memory – and how these representations may ultimately pave the way to healing historical wounds.

The details of the event are:
Date: Thursday 26 March 2015
Time: 12:30
Venue: Albert Wessels Auditorium, Bloemfontein Campus
RSVP: Jo-Anne Naidoo at Naidooja@ufs.ac.za
A South African Sign Language interpreter will be present at the event.

Joining Judge Sachs on stage as respondent will be Dr Buhle Zuma, a young scholar and lecturer at the University of Cape Town's Psychology Department.

Expressing experiences of trauma
Judge Sachs is no stranger to the use of the arts as a way of expressing the inarticulable and overwhelming experiences of trauma. Targeted as an anti-apartheid freedom fighter, he lost his right arm and was blinded in one eye in a car bomb attack in 1988. As a judge of the Constitutional Court, he spearheaded conversations about the role of the arts in our constitutional democracy. This has led to the installation of some of the best artworks by South African artists at the Constitutional Court.

Vice-Chancellor’s Lecture Series on Trauma, Memory, and Representations of the Past
This lecture will launch of the Vice Chancellor’s Lecture Series on Trauma, Memory and Representations of the Past. It forms part of a five-year research project led by Prof Pumla Gobodo-Madikizela, funded by the Mellon Foundation. The event is hosted by the UFS Trauma, Forgiveness and Reconciliation Studies.

“One of the most remarkable aspects of trauma,” Prof Gobodo-Madikizela says, “is the loss of language, a moment of rupture that produces what some scholars have referred to as ‘speechless terror’. The arts, in all its forms – literary, performance, and visual – are a viable mechanism through which the unspeakable, traumatic past may be represented.”

These artistic forms of representing trauma are at the heart of this Vice-Chancellor’s Lecture Series. “We are interested not only in how experiences that transcend language are represented through the arts,” Prof Gobodo-Madikizela explains, “but also in probing the limits of trauma theory, and how the creative arts might be employed to bear witness in a way that may open up the possibility of healing.”

Dr Buhle Zuma
Former Mandela Rhodes scholar and one of the 2011 Mail & Guardian’s 200 Young South Africans, Dr Zuma is particularly interested in issues at the heart of our rainbow nation. His current research revolves around the question of freedom: what it means to be human for black people after centuries of dehumanisation, and the role of desire and fantasy in the political imagination of post-apartheid South Africa.

 

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