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US 2013/0170911 A1Published application
Method of restoring contaminated land
AssigneeLichen Properties Limited
InventorQuinton Clive Richards
Life of this patent
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Abstract
A method of restoring contaminated land, for example landfill (12), comprises covering the surface of the land with a substantially uninterrupted layer of a composition including pulverised fly ash mixed with lime, the preparation creating a pozzolanic pan (14). At least one soil horizon comprising varying mixtures of pulverised fly ash, biochar and secondary treated sewage sludge or other organic material is laid over the pozzolanic pan (14).
Claims22
A method of restoring contaminated land comprising;
- covering the surface of the land with a substantially uninterrupted layer of a composition including pulverised fly ash mixed with lime, the layer creating a pozzolanic pan, and laying at least one soil horizon over the pozzolanic pan, at least one soil horizon including at least some biochar, the biochar having been pyrolised from biomass, wherein pyrolysis of the biomass is effected with methane gas extracted from landfill.
22-28. (canceled)
Dependencies are inferred from the claim text.