In comparison with the incineration of used tyres in cement kilns, the recycling of tyres – through processing into rubber granulate and steel for the substitution of virgin raw materials – offers substantial environmental benefits. Life Cycle Assessment studies document that significantly less CO2 is emitted to the atmosphere, and the negative impact on the acidification of the atmosphere is significantly reduced. Tyres contain sulphur, which is used in the vulcanisation process, and this sulphur vaporises in connection with incineration, causing acid rain. When tyre rubber is recycled, sulphur is contained and thus not released into the atmosphere.
It is, however, of paramount importance that recycled rubber is produced in a high quality – and made from known and consistent source material. Many rubber recyclers mix all kinds of scrap rubber, resulting in a recycled product which is not uniform, consistent and pure. Genan recycled rubber is made from end-of-life tyres only – and undergoes strict and thorough quality control.