Landfill Mining

landfill

Landfill mining and reclamation (LFMR) is the excavation and processing of solid wastes which have previously been landfilled to reduce the amount of landfill mass encapsulated within the closed landfill and/or to remove hazardous materials. In the process, mining recovers valuable recyclable materials, a combustible leachate (liquid that, in passing through matter, extracts solutes, suspended solids or any other component of the material through which it has passed), soil, and landfill space.

The aeration of the landfill soil is a secondary benefit regarding the landfill’s future use, and the combustible leachate is useful for the generation of power. The concept was introduced as early as 1953 at the Hiriya landfill near the city of Tel Aviv, Israel. Waste contains many resources with high value, the most notable of which are non-ferrous metals such as aluminium cans and scrap metal. The concentration of aluminium in many landfills is higher than the concentration of aluminum in bauxite from which the metal is derived.

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