Circular salt production with a fraction of the climate impact
Incinerating municipal waste destroys potentially harmful microbes and many contaminants. At the same time, valuable raw materials are concentrated in the residue, for example in the fly ash, making it possible to recover them at a large scale.
For all the three main salts produced by the Ash2Salt technology, the climate footprint is about one-tenth of traditional production.
- Potassium is one of the key nutrients in fertiliser, crucial for agriculture to be able to grow the food we need. Today, it is mined, which causes large climate emissions, and production is largely concentrated to a few countries. Potassium chloride from the Ash2Salt process carries a carbon footprint 93% lower than the equivalent from the mining of virgin resources.
- Common production of calcium chloride requires the mining and heating of limestone, another climate-intensive process. It is primarily used for de-icing roads and carries a 92% lower carbon footprint when produced with the Ash2Salt method.
- Sodium chloride, known to most people as ordinary table salt, is one of the most used chemical compounds on the planet. Many industrial processes depend on large quantities of sodium chloride. As most of it comes from mining or the evaporation of sea water, the Ash2Salt technology lowers production climate emissions by 88%.