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31 May 2022 | Story Lunga Luthuli | Photo Supplied
Melissa De Aveiro

Singer, writer, and motivational speaker, Melissa de Aveiro, says: “One can only rise from the ashes when the fire starts again, and the beauty of it all is that the ashes is stuck to your clothes. As you move on, you build off it as it falls from your clothes.”

She said: “When the fire starts in you, nothing is going to stop it.”

This she said at the Division of Organisational Development and Employee Well-being’s Rising from the Ashes event held at the Centenary Complex on the Bloemfontein Campus. Melissa’s story is about never giving up and “never backing down – even when people throw you with rocks, use the rocks to build a new road”.

Melissa said: “Many people unfortunately do not rise from the ashes because there is no support from friends, people. You can never do it alone as the journey through the ashes is lonely.”

Melissa believes to get through the ashes, one has to go back and “remind yourself of when it was good in your life, remind yourself about the positive things – even though things might not be great now”.

Known as the 'Weskus Dutchess', and growing up in Vredendal, Western Cape, Melissa’s tough life, sexual abuse, drug abuse, homelessness, and the death of her son never stopped her from dreaming. All the setbacks planted in her a “passion for a guitar and people, a birth of a new season, a desire to change the world”.

To rise from the ashes, Melissa said, “You need to go back to the place where you were hurting, confront the demons, the people that abused you, maybe forgive them and remove the chains you are tied with.”

Susan van Jaarsveld, Senior Director: Human Resources at the University of the Free State, believes that hosting wellness events is a way for the UFS to show that “employees are the most valuable asset of the university and need to be looked after”.

Susan said: “Staff need to know that it is okay not to be okay. However, the UFS has systems to look after your well-being. People need to know that they are not alone, they can make use of the Department of Human Resources’ Careways Employee Wellness Programme.”

Susan believes it was important to host the event, as “staff need face-to-face interaction for their well-being, it helps people to know they are not alone”.

Melissa, the author of the book Weskus Wonderwerk, believes in being unstoppable. She said: “To rise from the trenches, always think positive about yourself, you must exist. You cannot give up; your worth cannot be determined by an individual.” 

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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