Product made from assimilated clinkers from household waste incineration, used in landfills or to purify biogas

The product comprises, by weight 95 to 99.5% clinkers with a particle size less than or equal to 40mm and a humidity of 10 to 30%, preferably 15 to 20% by weight and 0.5 to 5% coke. The product is used in one or more layers to cover a landfill before revegetating. Purification of biogas from a landfill by passing the biogas through one or more layers of the product. The product is preferably 98 to 99% clinkers and 1 to 2% coke, and the coke is lignite or thermolysis coke. The clinkers are category V or M using standard NF X31-210. One or more layers of product are spread over a landfill, compacted to 30 to 40cm thickness. For a waste layer 5m thick or for biogas purification, one to three strata of product with a height of 40cm to 1m are used. One layer is the final layer before revegetation. Le produit à base de mâchefers d'incinération de déchets ménagers et assimilés selon l'invention comprend 95 à 99, 5 % en poids d'un mâchefer ayant une taille de particules égale ou inférieure à 40 mm et un taux d'humidité de 10 à 30 % en poids, et 0, 5 à 5 % en poids de coke.Application à l'épuration du biogaz engendré par les décharges de déchets.