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10 May 2022 | Story Anthony Mthembu | Photo Supplied
Alina Ntsiapane
Alina Ntsiapane obtained second place in the partners division of the ILRI CapDev Grand Challenge research pitching contest.

Alina Ntsiapane, a PhD student at the University of the Free State, obtained second place in the partners category of the International Livestock Research Institute’s (ILRI) CapDev Grand Challenge research pitching contest, which took place on 13 April 2022. The pitching contest is the first part of the CapDev Grand Challenge, which is a 10-month process aimed at equipping scientists with the necessary skills to contribute to new research. 

Presenting Research to a Tough Panel of Judges 

Ntsiapane was one of 30 contestants who presented their research virtually to a panel of esteemed judges. “It was not easy, it was very challenging for me because it was my first time presenting my PhD study and I had to do it live on an international platform,” expressed Ntsiapane. Although each contestant is thoroughly prepared for their respective presentations, Ntsiapane argues that some of the questions asked by the judges can be quite daunting. “Some of their questions were very challenging and I did not know how to respond to them, but they made me aware of ways in which I needed to improve my research,” she stated. However, regardless of the intensity of the pitching contest, Ntsiapane’s research allowed her to progress to the next stage of the CapDev Grand Challenge. She will be part of the rigorous 10-month training process that will begin in June 2022.

Ntsiapane’s Research Project

Ntsiapane’s PhD research focuses on the production of smallholder wool as a means to improve livelihoods in both Thaba ’Nchu and Botshabelo in the Free State. In fact, in the research Ntsiapane highlights that there has been a significant decline in the production of wool within the last three decades. As such, Ntsiapane believes it is imperative to create spaces that allow for the training of small-scale farmers, so that the production of wool can still be a possibility.
Consequently, Ntsiapane hopes that the 10-month training she will receive from the CapDev Grand Challenge will not only allow her to grow but will assist in opening doors for her. “I’m hoping to get exposure and to make connections with policy makers and the donors as well. This will assist me in achieving my goals,” she explained. 

Future Endeavours After the Training Course

Subsequent to the training course, Ntsiapane would like to utilise that knowledge by continuing to make her most recent project a reality. Ntsiapane is currently working on developing a television show aimed at providing adequate training to small-scale farmers, so that they are equipped with the necessary knowledge and understanding of the industry in which they find themselves. As such, being part of the CapDev Grand Challenge will allow her to learn some of the necessary ways in which this dream could become a reality. 

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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