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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’ position on student politics
2011-09-01

The University of the Free State (UFS) welcomes politics on its campus. It especially invites students to participate in all the political activities on campus, ranging from seminars and debates on national and provincial politics, and organization within party political structures. Earlier the year, in the run-up to the Local Government Elections, a programme was run on campus with all political parties participating in public and radio debates with students on political issues.

A university must be a place for all kinds of ideas and organizations---social, cultural, religious, academic and, yes, political. The perception that the UFS has “banned” politics is simply not true, nor is it possible within a constitutional democracy.
 
The University of the Free State once again invites SASCO and any other political groupings that have not yet registered to participate in campus life, to do so as soon as possible. It is important to the UFS that all student bodies enjoy full participation in campus life, and that there exists a vibrant and exciting political life on the campus alongside academic, social, cultural and religious life.
 
The Student Representative Council (SRC) Elections at the UFS has been constituted on independent candidacy and non-party-political basis. This is a decision crafted and recommended by the Broad Student Transformation Forum, whose members are elected by students, and approved for implementation by the highest authority of the university, the Council. The decisions of the Student Forum entails that all students can nominate individuals for a variety of student leadership positions, which includes nomination for elective portfolios in the SRC elections, but also within nine sub-councils that hold ex-officio seats on the SRC.
 
The old system which restricted student leadership to representation on a party-political basis only (DA, ANC, Freedom Front Plus etc) no longer exists.
 
This decision of the Student Forum ensures that the rights of all students to directly elect their representatives are protected, and that the SRC in fact represents the student body as a whole and not particular interest groups alone. This decision enables ALL students to stand for and participate in campus politics in the SRC elections, though not on a party political ticket. In the 2011 SRC Elections, for example, SASCO members were indeed mandated by its local branch to stand as candidates for various elected positions, as did other political parties such as the DA Student Organisation, a development which the university welcomes. 
 
Most importantly, the UFS insists that all students participate in university life with respect for the rights of all students, irrespective of their social beliefs or political commitments. The UFS insists that no student or student grouping acts to disrupt campus life or insult university staff or denigrate fellow students on grounds of race, religion, language, gender, etc. This is very important to the UFS as it works to build a non-racial culture that respects our common humanity. Our students must learn that democracy and decency go hand in hand, and that part of learning at a university, is to learn to differ without resorting to a language of derision.
 
In short, the University of the Free State warmly welcomes full participation in politics, as in other spheres of student life, on all three its campuses.
 
Statement by Prof. Jonathan Jansen, UFS Vice-Chancellor and Rector.

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