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17 April 2025 | Story Onthatile Tikoe | Photo Kaleidoscope Studios
Thabiso Khoeli
Dr Thabiso Khoeli, Lecturer in Historical and Constructive Theology at the UFS, celebrates the completion of his PhD.

The University of the Free State (UFS) celebrated one of its own, Dr Thabiso Khoeli, a Historical and Constructive Theology Lecturer in its Faculty of Theology and Religion, when he received his PhD in Theology with specialisation in religion studies during the recently completed April graduation ceremonies. 

Dr Khoeli’s achievement not only marks a personal milestone but also advances the university’s Vision 130, a strategic initiative to position UFS as a research-led institution by its 130th anniversary in 2034. Dr Khoeli’s academic journey is one of resilience, transformation, and a profound commitment to telling African stories from an African perspective. 

 

From uncertainty to purpose

Dr Khoeli’s path into studying Theology was unplanned. As a former KovsieFootball  player, his initial academic interest was in Sports Science. However, after some admission hurdles, he found himself directed towards Theology, a field that soon captured his full attention.

“Honestly, I did not choose Theology, instead it chose me,” he shares. “… Theology whispered to me and said, ‘Do not deviate, Brother. Your calling is here.” Despite initial scepticism, his first semester revealed the intellectual and spiritual depth of the discipline, compelling him to pursue it with passion.

 

A research focus on African voices

His doctoral research, titled ‘Exploring the Zion Christian Church’s Teachings and Qualities in Comparison with Zion Churches’, examines the theological, historical, and cultural distinctiveness of the Zion Christian Church (ZCC), one of the largest and most influential religious movements in Africa. Motivated by a desire to decolonise theology and challenge externally imposed narratives, Dr Khoeli engaged directly with primary sources, including archival materials and interviews with Church elders.

“Africans must now write their own stories and never rely on the findings presented by others,” he says. His work not only fills critical gaps in theological scholarship but also reflects the UFS’s vision of becoming a centre of thought leadership on the African continent.

 

Research shaping teaching

As a Lecturer in Historical and Constructive Theology, Dr Khoeli’s research directly informs his methods of teaching. He approaches the classroom with a decolonised, historically grounded perspective that helps his students engage with both their spiritual heritage and contemporary realities critically.

“My research enabled me to analyse documents and align them to my objective,” he explains. “That is the strategy I use to collect the relevant reading materials to prepare for the students.” His teaching method fosters independent thinking and encourages students to become scholars who are both academically rigorous and socially conscious.

 

Overcoming challenges through community and conviction

Gaining access to the ZCC’s historical documents was a major challenge. The Church’s deep-rooted secrecy required careful relationship-building and persistent effort. But Dr Khoeli remained undeterred. “I intended to leave no stone unturned,” he says. Through perseverance, mentorship, and faith, he accessed essential material for his literature-based study.

He also credits colleagues at the Faculty of Theology and Religion for their belief in his potential at a time when few others would give him a chance. “It feels great,” he reflects. “I don’t have enough words to explain how overwhelming it feels to prove to yourself that you are the greatest.”

 

A vision beyond the doctorate

With his PhD now complete, Dr Khoeli is setting his sights on further research projects that contribute to the reconstruction of African religious history and knowledge systems. He sees his work as part of a larger mission to revive indigenous spirituality and cultural identity in the face of modern erasure.

“Modernity is converting us to be a nation without roots,” he cautions. His aim is to produce scholarship that restores heritage while also responding to the physical and spiritual needs of African communities, one of the fundamental goals of the UFS’s Vision 130.

 

Inspiring the next generation

To current and future UFS students, especially those considering postgraduate study, Dr Khoeli offers this message, with his own story as proof: “Believe in your purpose, even when the path seems uncertain… There is greatness in you.” 

Through his academic excellence, teaching innovation, and dedication to African-centred research, Dr Khoeli exemplifies the values of the UFS’s Vision 130. His journey reflects a university that is not only committed to high-impact research but also to empowering scholars who bring change, both in the academic world and beyond.

News Archive

Researcher part of project aimed at producing third-generation biofuels from microalgae in Germany
2016-05-09

Description: Novagreen bioreactor  Tags: Novagreen bioreactor

Some of the researchers and technicians among the tubes of the Novagreen bioreactor (Prof Grobbelaar on left)

A researcher from the University of the Free State (UFS), Prof Johan Grobbelaar, was invited to join a group of scientists recently at the Institute for Bio- and Geo-Sciences of the Research Centre Jülich, in Germany, where microalgae are used for lipid (oil) production, and then converted to kerosene for the aviation industry.

The project is probably the first of its kind to address bio-fuel production from microalgae on such a large scale.  

“The potential of algae as a fuel source is undisputed, because it was these photoautotrophic micro-organisms that were fixing sunlight energy into lipids for millions of years, generating the petroleum reserves that modern human civilisation uses today.  However, these reserves are finite, so the challenge is marrying biology with technology to produce economically-competitive fuels without harming the environment and compromising our food security.  The fundamental ability that microalgae have to produce energy-rich biomass from CO2, nutrients, and sunlight through photosynthesis for biofuels, is commonly referred to as the Third-Generation Biofuels (3G),” said Prof Grobbelaar.

The key compounds used for bio-diesel and kerosene production are the lipids and, more particularly, the triacylglyserols commonly referred to as TAGs.  These lipids, once extracted, need to be trans-esterified for biodiesel, while a further “cracking” step is required to produce kerosene.  Microalgae can store energy as lipids and/or carbohydrates. However, for biofuels, microalgae with high TAG contents are required.  A number of such algae have been isolated, and lipid contents of up to 60% have been achieved.

According to Prof Grobbelaar, the challenge is large-scale, high-volume production, since it is easy to manipulate growth conditions in the laboratory for experimental purposes.  

The AUFWIND project (AUFWIND, a German term for up-current, or new impetus) in Germany consists of three different commercially-available photobioreactor types, which are being compared for lipid production.

Description: Lipid rich chlorella Tags: Lipid rich chlorella

Manipulated Chlorella with high lipid contents (yellow) in the Novagreen bioreactor

The photobioreactors each occupies 500 m2 of land surface area, are situated next to one another, and can be monitored continuously.  The three systems are from Novagreen, IGV, and Phytolutions.  The Novagreen photobioreactor is housed in a glass house, and consist of interconnected vertical plastic tubes roughly 150 mm in diameter. The Phytolutions system is outdoors, and consists of curtains of vertical plastic tubes with a diameter of about 90 mm.  The most ambitious photobioreactor is from IGV, and consists of horizontally-layered nets housed in a plastic growth hall, where the algae are sprayed over the nets, and allowed to grow while dripping from one net to the next.

Prof Grobbelaar’s main task was to manipulate growth conditions in such a way that the microalgae converted their stored energy into lipids, and to establish protocols to run the various photobioreactors. This was accomplished in just over two months of intensive experimentation, and included modifications to the designs of the photobioreactors, the microalgal strain selection, and the replacement of the nutrient broth with a so-called balanced one.

Prof Grobbelaar has no illusions regarding the economic feasibility of the project.  However, with continued research, optimisation, and utilisation of waste resources, it is highly likely that the first long-haul flights using microalgal-derived kerosene will be possible in the not-too-distant future.

Prof Grobbelaar from the Department of Plant Sciences, although partly retired, still serves on the editorial boards of several journals. He is also involved with the examining of PhDs, many of them from abroad.  In addition, he assisted the Technology Innovation Agency of South Africa in the formulation of an algae-biotechnology and training centre.  “The chances are good that such a centre will be established in Upington, in the Northern Cape,” Prof Grobbelaar said.

 

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