Adsorbent mediated reduction of organic chemicals from solid building materials
AssigneeUniversity of North Dakota
InventorsEvguenii I. Kozliak, Wayne S. Seames
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Abstract
A method of removing pollutants from building materials using an externally applied adsorbent. The adsorbent has a high affinity to common pollutant chemicals. The pollutants are transferred from the contaminated microporous building materials onto the adsorbent until sufficient amounts of pollutant chemicals are reduced to make the building materials acceptable and safe to use. The adsorbent may be regenerated and reused or treated as a waste.
Claims13
A method of accelerating reduction of a concentration of a semivolatile organic chemical from a porous, solid building material of a building that has been subjected to contamination, the method comprising:
- applying a layer of an adsorbent material, the layer comprising at least 45% activated carbon, on a surface of the porous, solid building material to enable diffusion of a semivolatile organic chemical from interior pores of the porous, solid building material towards the surface of the porous, solid building material;
- allowing adsorption of the semivolatile organic chemical to the adsorbent material for at least about six hours;
- and
- removing the adsorbent material containing an adsorbed semivolatile organic chemical from the surface of the porous, solid building material.
Dependencies are inferred from the claim text.