Article P-plus: greenSand: offset CO2 with garden sand

Planting a tree in your own garden offsets some of your own CO2 emissions. But it can also be done by scattering sand or garden soil of greenSand. That also removes this greenhouse gas from the atmosphere, claims the company Olivine Group. There is a calculation on the website. If we spread 14 kilos of greenSand on a garden measuring 3 by 8 meters, we will achieve a CO2 reduction of 18 kilos per year. If all Dutch people would do that in their garden, we would all reduce 65 million kilos of CO2. That is equivalent to the emissions of 22,562 cars. The wonder is in the component “natural olivine”, a green colored mineral of volcanic origin that has been traced even on Mars. When it reacts with CO2, the rock begins to weather. Professor Olaf Schuiling has been promoting for some time to combat global warming in this way. But it is expensive. A big bag of coarse grains of olivine costs 595 euros. It is financially more bearable to buy this igneous rock when it has been ground in a bag of garden soil. It then costs 3.95 euros per 10 litres.
Eddy Wijnker, director greenSand: 'Lime for your turf is more expensive. Olivine contains a lot of magnesium, it makes the grass greener.'
Wijnker has to get the garden centers in the Netherlands along for the time being. The number of points of sale is currently limited to three. Wijnker: 'Our biggest customer to date was Bob Crébas, from nettle fashion Brennels. He has a large site in the Flevopolder where we have spread greenSand on 50 hectares. If we were to do that worldwide, it would cost 300 billion euros. That is much cheaper than underground CO2 storage, such as in Barendrecht.”
A report from Jan Bom, article in the magazine P-plus

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