Waste artificial marble pyrolysis and hydrolysis.

Artificial marble, a composite material consisting of 40 % (g g) Poly Methyl Methacrylate (PMMA) and 60 % (g g) aluminium hydroxide Al(OH)3, combines the durability and aesthetics of real marble with the lightweight and moldability of plastic. It is the most sought-after synthetic stone in the world, with a production volume of over 1 million t in 2021. However, due to a high level of cross-linking, mechanical recycling of the composite is impossible, while chemical recycling is achievable, yet unprofitable.