The shells come from local restaurants and are taken to a design studio where they are then crushed, sorted and mixed together into a final product that consists of 80 percent oyster shells.
– We took the shells because we saw the potential in them, because they have the same chemical composition as limestone, says Mooka Srisurayotin.
Limestone is a key raw material in cement production, but when limestone is mined and then heated in cement kilns, a lot of carbon dioxide is released.
Cement production accounts for 7 percent of global carbon dioxide emissions, according to the research institute Rise.
In many parts of the world, they try to make use of things that usually end up in the dustbin. Like in France where they found a way to make cut hair into mulch mats. And in Belgium where cigarette butts are collected which are cleaned and filtered and become insulation.
Feel free to send in tips on progress to: prässä[email protected]