Method for treating soil contaminated with hydrocarbons, in particular with polycyclic aromatic hydrocarbons
AssigneeAmrize Technology Switzerland LLC
InventorsLe-Chien Hoang, Nouffou Tapsoba, Ivan Serclerat
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Abstract
A method for treating soil contaminated with hydrocarbons, in particular with polycyclic aromatic hydrocarbons, includes working the soil with, by weight of soil from 0.1 to 12% of activated carbon; and from 0.1 to 10% of hydraulic binder, the total content of activated carbon and of hydraulic binder in particular ranging between 0.5 and 15%.
Claims16
A method for treating a soil containing 3 to 50% by weight water, said soil being-contaminated with hydrocarbons, and said method comprising at least one step of working the soil with, by weight of soil:
- from 0.1 to 12% activated carbon to adsorb hydrocarbons from the soil;
- and
- from 0.1 to 10% hydraulic binder to encapsulate the activated carbon and to prevent the release of adsorbed hydrocarbons,
- wherein the hydraulic binder comprises calcium aluminate cement, and
- wherein the hydraulic binder/activated carbon ratio is comprised between 0.2 and 1.
A method for the treatment of soil contaminated by hydrocarbons comprising a step of contacting the soil with a composition comprising in % by weight:
- between 70 to 80% of a hydraulic binder for encapsulating the activated carbon after adsorption of hydrocarbons in the soil, and
- between 20 and 30% of activated carbon,
- wherein the hydraulic binder comprises calcium aluminate cement, and
- wherein the hydraulic binder/activated carbon ratio is comprised between 0.2 and 1.
Dependencies are inferred from the claim text.