Method for removal of contaminants from surfaces

Details Method for removal of contaminants from surfaces Method for removal of contaminants from surfaces

1997-05-22

1999-10-05

Thornton, Krisanne

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

134 3, 134 28, 134 41, 252142, 2521746, 252546, B08B 308, C11D 708, C23G 102

Patent

active

059617365

ABSTRACT:
Cleaning processes and water-based cleaning compositions effective for the removal of radionuclides, polychlorinated biphenyls, pesticides, herbicides, and heavy metals from surfaces of all types, more especially porous surfaces, surfaces that contain irregularities and microscopic voids into which contaminants may migrate and lodge thereby creating a substrate below the surface that must also be cleaned, and particulate surfaces. The cleaning blends and processes remove contaminants from porous and irregular surfaces to such a depth below the surface and into the substrate, and to such an extent, that the cleaned surface satisfies current regulations promulgated by the EPA and NRC relating to standards for decontamination.

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