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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 satisfied with proceedings of EFF National People’s Assembly
2014-12-17

The University of the Free State (UFS) is happy about another successful hosting of a political party; this time, the Economic Freedom Fighters (EFF). In the recent past (December 2012), the UFS hosted the African National Congress (ANC) with the same energy, support and selfless commitment as with the EFF.

“The fact that the EFF paid the required amount for the use of the university’s venues in full before the congress commenced, bears testimony to this. For the past two months, the UFS’s working team worked closely with the EFF’s logistics team to thoroughly plan for a smooth and successful National People’s Assembly,” says Dr Choice Makhetha, Acting Rector of the UFS.

The hard work and commitment invested in the preparation process paid off. The 1st EFF National People’s Assembly, held 13-16 December 2014 on the Bloemfontein Campus, was a huge success.

“It is with great excitement that I can report that all premises of the UFS have been left the way they were found on arrival; no damage to any property and no littering.”

“Thank you to the UFS staff members who worked selflessly on a daily basis: the cleaning staff who started very early in the morning and went home very late at night; garden staff who made sure that the grounds were exceptionally clean every day and the flowers bright; student volunteers who worked shifts of over 24 hours on the first day, making sure that EFF delegates were checked into residences; staff members at the Visitors Centre who were ready to share information about the university and provide support to EFF delegates; staff members at the Odeion (which served as media centre) who ensured that the national and international media houses were comfortable and that the media conferences ran smoothly; safety and security personnel who provided protection for all the people on campus and also ensuring safety of the buildings; the health and safety officers supported by our partners from ER24 emergency services; and the South African Police Services (SAPS). To the electricians, the plumbers and other colleagues from Physical Resources who assisted with any task, even beyond the call of duty, we say thank you. For all the support and extra miles travelled – we appreciate your passion for the work you do; you are all very important to us at the UFS.”

“As the University of the Free State, we would like to express our gratitude to the leadership of the EFF, the delegates, guests and partners, as well as the media houses. The level of discipline among delegates was impressive. The UFS staff members appreciate the level of professionalism and respect shown by the EFF leadership and delegates. All the best for the future!,” says Dr Makhetha.

The UFS will continue to host political parties, interest groups, associations and more in their diversity, provided there is availability of venues, events are held outside the academic period and payment is received well ahead of hosting. As a public institution of higher learning, the university has a responsibility to promote democracy and help deepen the principles thereof. A university is a perfect platform for differing views and diverse political formations to find expression.

“To the UFS community, thank you for the trust you showed in the working team as it prepared to host the EFF’s 1st National People’s Assembly. To Mangaung Metropolitan Municipality and the Free State Province – we appreciate the support. As the University of the Free State, we know we can always count on you!”, says Dr Makhetha.  

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