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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

UFS study finds initiation does not build character
2015-06-24

Photo: Canva.com

Initiation at schools and school hostels does not build character or loyalty. On the contrary, it is a violation of human dignity and the rights of children.

This is the opinion of researchers from the University of the Free State’s Faculty of Education after an exploratory study of initiation practices in schools.

Although the use of initiation in schools and school hostels is forbidden by the Regulations to Prohibit Initiation Practices in Schools, the study found that this practice is still widely evident in schools. The study also found that, in some cases, teachers and/or principals take part.

In the study, led by Dr Kevin Teise from the Faculty of Education, it was found that physical deeds and even violence and emotional degradation were inflicted under the guise of ‘initiation’.

The study was discussed recently during a panel discussion between the Faculty of Education, the Faculty of Law, and the Institute for Reconciliation and Social Justice.

The ‘initiation activities’ that take place during school hours ranged from carrying senior learners’ bags or doing other favours for them, handing over their food or food money, doing senior learners’ homework, and looking down when they speak to senior learners.

In school hostels, it was found that learners were expected to do humiliating things, and were also subjected to physical demands and even violence. Learners pointed out that they were smeared and beaten, their heads pushed into toilets, they had to bath or shower in cold water, they had to eat strange things, and they were prevented from sleeping.

Dr Teise says initiation practices are a general phenomenon in the schools and school hostels that took part in the investigation. Newcomers were subjected to silly and innocent practices, but also to physically and emotionally degrading, and even dangerous ones, before and after school, and during breaks and sports- and cultural gatherings.

“The study’s findings give every indication that the constitutional principles on which the policy document, Regulations to Prohibit Initiation Practices in Schools, is modelled, are not being put into practice and respected at these schools. Policy documents and school rules are pointless if learners, old pupils, parents, teachers, and the broad community consider initiation an acceptable behaviour that is, ostensibly, an inseparable part of school or hostel tradition and of the maturation and/or team-building processes.”

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