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11 February 2019 | Story Mamosa Makaya | Photo Francois van Vuuren
Star of stars
Thabang Sithela from L.a Wesi Secondary School is the 2019 Star of Stars here with Nomonde Mbadi, Director of Student Recruitment Services.

The Star of Stars Awards is a spectacular annual event that recognises and celebrates excellence among Grade 12 learners from Quintile 1-3 schools in the Xhariep, Motheo and Lejweleputswa regions of the Free State province. The office of Student Recruitment Services held the award ceremony on 2 February 2019, at the University of the Free State’s (UFS), Bloemfontein Campus. In attendance were Grade 12 finalists and their parents, senior leadership of the UFS and sponsors of the event.

Awards programme drives excellence

Participants in the Star of Stars award programme are cultivated from schools located in some of the poorest communities in the province, where they are faced with difficult social circumstances. The top 20 are selected using their June and September matric results, and from these the top 10 are selected using the criteria of academics, leadership, and community engagement. This year’s top award was presented to Thabang Sithela from La Wesi Secondary school in Nyakallong, Allanridge. He is registered to study for a degree in Geochemistry in the Faculty of Natural and Agricultural Sciences on the Bloemfontein Campus.

Accepting the top award Thabang encouraged other learners to remain steadfast “to be successful in life you have to remain positive, even in negative situations, so as not to find yourself remaining in that negativity”. The panel of judges comprised seven officials from various Bloemfontein-based organisations including the UFS, OFM and Kovsie Alumni Trust. The panel was chaired by Mar’c Scholtz of Brand Boss Creative, who praised the students for their unrelenting willpower in emerging top of their class. He further commended the office of UFS Student Recruitment Services led by Nomonde Mbadi, director of Student Recruitment Services, who conceptualised the programme in 2016, which has grown in leaps and bounds.

Fostering diversity and inclusion

The UFS Rector and Vice-Chancellor, Prof Francis Petersen, said one of the remaining challenges facing universities in South Africa is inequality, which permeates the circumstances of disadvantaged students when they join higher education institutions. He said the UFS aims to ensure that its student body is representative of society, with one of its goals being diversity and inclusivity. However, elements such as social class still hold students back. But despite this the students being awarded are a shining example of what it takes to beat the odds. “This is the most exciting time of your life, enjoy it,” Prof Petersen said.

The Star of Stars awards programme is holistic, empowering finalists with career counselling, mentorship, and guidance to campus life. The programme is key in incentivising students in the Free State to be high achievers, but most importantly to overcome their difficult circumstances, opening them up to greater opportunities in their student life and future careers.

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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