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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

Fracking in the Karoo has advantages and disadvantages
2012-05-25

 

Dr Danie Vermeulen
Photo: Leatitia Pienaar
25 May 2012

Fracking for shale gas in the Karoo was laid bare during a public lecture by Dr Danie Vermeulen, Director of the Institute for Groundwater Studies (IGS). He shared facts, figures and research with his audience. No “yes” or “no” vote was cast. The audience was left to decide for itself.

The exploitation of shale gas in the pristine Karoo has probably been one of the most debated issues in South Africa since 2011.
 
Dr Vermeulen’s lecture, “The shale gas story in the Karoo: both sides of the coin”, was the first in a series presented by the Faculty of Natural and Agricultural Science under the theme “Sustainability”. Dr Vermeulen is a trained geo-hydrologist and geologist. He has been involved in fracking in South Africa since the debate started. He went on a study tour to the USA in 2011 to learn more about fracking and he visited the USA to further his investigation in May 2012.
 
Some of the information he shared, includes:

- It is estimated that South Africa has the fifth-largest shale-gas reserves in the world, following on China, the USA, Argentina and Mexico.
- Flow-back water is stored in sealed tanks and not in flow-back dams.
- Fracturing will not contaminate the water in an area, as the drilling of the wells will go far deeper than the groundwater aquifers. Every well has four steel casings – one within the other – with the gaps between them sealed with cement.
- More than a million hydraulic fracturing simulations took place in the USA without compromising fresh groundwater. The surface activities can cause problems because that is where man-made and managerial operations could cause pollution.
- Water use for shale-gas exploration is lower than for other kinds of energy, but the fact that the Karoo is an arid region makes the use of groundwater a sensitive issue. Dr Vermeulen highlighted this aspect as his major concern regarding shale-gas exploration.
- The cost to develop is a quarter of the cost for an oil well in the Gulf of Mexico.
- Dolerite intrusions in the Karoo are an unresearched concern. Dolerite is unique to the South African situation. Dolerite intrusion temperatures exceed 900 °C.

He also addressed the shale-gas footprint, well decommissioning and site reclamation, radio activity in the shale and the low possibility of seismic events.
 
Dr Vermeulen said South Africa is a net importer of energy. About 90% of its power supply is coal-based. For continued economic growth, South Africa needs a stable energy supply. It is also forecast that energy demand in South Africa is growing faster than the average global demand.
 
Unknowns to be addressed in research and exploration are the gas reserves and gas needs of South Africa. Do we have enough water? What will be the visual and social impact? Who must do the exploration?
 
“Only exploration will give us these answers,” Dr Vermeulen said.

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