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21 February 2018 Photo pixabay
Water-wise expert says Is there a solution to pollution
Next time you want to throw something away, think twice. Look for ways to reuse, recycle, or repurpose.

Dr Cindé Greyling completed her PhD in Disaster Management with DiMTEC (Disaster Management Training and Education Centre for Africa) at the University of the Free State (UFS). Built on prior studies and years of communication experience, she opted to study ways in which to communicate drought mitigation information. Part of the mitigation process included saving water and reducing pollution.

A practical approach

“Look, we are all here now. And we need to eat, live, work, survive, and ultimately thrive using our planet’s resources,” she says. “But I think we’ve become so fixated on thriving, that we don’t consider survival anymore. Of course, some people do! There are wonderful projects around the world aiming at more responsible consuming, ranging from pre-loved baby clothes, to water harvesting for individual dwellings and larger compounds.” However, she understands that people may get so overwhelmed by the vast pollution problem that they consider any of their own efforts as insignificant. “That is not true. Every single bit of plastic (or cloth, glass, iron, etc.) that is recycled or repurposed, and does not end up in a landfill, makes a difference.” And here is why…

The tip of the iceberg
“Whatever you are holding in your hand and aiming for the bin is much larger than what you see. Take a piece of paper, for example. A tree was planted – the process involved fossil fuels, water, fertiliser, time, wages, administration, etc. And many years of that! Once it was felled, the resource usages continued, and expanded to processing plants, wholesalers, retailers, and then you – who also used resources to acquire that piece of paper. Do you see how large the wastage is? The same is true for food waste … that rotten tomato you forgot in the fridge is a grave loss.”

“Whatever you are holding in your hand,
aiming for the bin, is much larger what
you see.”


Little by little  

Fortunately, all is not lost. “Respect stuff,” Dr Greyling says, “it is as simple as that. To survive, we must take from the resources that the Earth provides. Because we became clever, we were able to alter these elements to make, from high-rise buildings to tiny technology. But we simply cannot keep on taking and taking without giving back Start with giving respect. Next time you want to throw something away, think twice. Look for ways to reuse, recycle, or repurpose. Consider that the denim you are wearing possibly used up to 10 000 litres of water to produce.”  

LISTEN: Dr Greyling elaborates on solutions for pollution

 

News Archive

Lithium-ion batteries research set to improve ordinary lives
2016-02-11

Description: Dr Lehlohonolo Koao  Tags: Dr Lehlohonolo Koao

Dr Koao is making a much-needed contribution in improving lives of ordinary people through his research on lithium-ion batteries.

The future of relevant and top-notch scientific research at the Qwaqwa Campus is in good hands. Dr Lehlohonolo Koao is one of the five members of the Vice-Chancellor’s Prestige Scholars Programme (PSP) on the Qwaqwa Campus.

The need to improve the efficiency of heating mechanisms in his immediate community in Qwaqwa, and the support he receives from the PSP, have become catalysts for his current research project on lithium-ion batteries. According to Dr Koao, the study will focus on producing batteries that last longer, store more energy, are cheaper to manufacture, and are environmentally friendly when being disposed of. These are key factors in solar energy.

‘’The majority of households in my neighbourhood have benefited from the government’s project of providing households with solar panels to help with lighting, cooking, and heating without worrying about the ever-increasing electricity costs,’’ said Dr Koao.

‘’Since my arrival in the area, I have realized that the heat absorption rate of the batteries used by solar panels is not enough. As a result, these batteries also lack enough power to sustain the supply throughout the day, especially on a cloudy day,’’ he said.

His research project focuses on improving the efficiency of lithium-ion batteries that are now commonly used in portable electronics, such as cell phones and laptops. This kind of battery is rapidly replacing the usual lead-acid batteries. Dr Koao’s determination to contribute towards a safer and more efficient heating absorption system has made him move away completely from his PhD study on lighting material.

‘’My previous study was on reducing the power usage on domestic and industrial lights as they use more electricity. This study, on the other hand, will enhance power retention in the batteries for improved daily life since cell phones, solar panels, and laptops, to mention only a few, are now a way of life,’’ he added.

Dr Koao is a Senior Lecturer in the Department of Physics, where he specializes in solid state materials.

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