Aspirable gels and methods for removing contaminants contained in organic layers on the surface of solid substrates

摘要

The present invention is an aspirable gel for removing contaminant species, such as radioactive contaminant species, contained in an organic layer on the surface of a material, preferably 1 to 25% by weight, preferably based on the total weight of the gel 5 to 20% by weight, for example 10% by weight of at least one inorganic thickener and 13 to 99% by weight, preferably 80 to 95% by weight of terpene and preferably 90% by weight, based on the total weight of the gel One or more organic solvents selected from mixtures thereof, optionally, 0.01 to 10% by weight of at least one dye and / or pigment, based on the total weight of the gel, and optionally a gel 0.1 to 2% by weight of at least one surfactant, based on the total weight of, and optionally 0.1 to 10% by weight, preferably 1 to 5% by weight, based on the total weight of the gel, Preferably a small amount selected from zeolite and clay Both includes one radionuclide extractant, and preferably consisting, consisting colloidal solution relates attractable gel. The present invention further relates to a decontamination method using the gel.