Natural Attenuation (NA) has just recently been re-assessed by the US National Research Council (NRC) and is considered as an established remedy with a high likelihood of success (at more than 75% of contaminated sites) for only a few types of organic contaminants such as BTEX, low-molecular-weight alcohols, ketones and esters, and methylene chloride. For inorganics such as metals, metalloids, oxyanions and radionuclides, the likelihood of success is rated as moderate or low (at more than 50% or at less than 25% of contaminated sites, respectively, table 37.1). It is assumed that any given site will have the right conditions for natural attenuation of the particular contaminant. The ratings are based on field evidence and the current understanding of the attenuation processes (MacDonald 2000). It seems that natural attenuation as a remedy for inorganics, in particular, is not given much potential.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
- Natural Attenuation of Inorganic Pollutants — a Critical View
- Springer Berlin Heidelberg