eytonsearth
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Joined: 31 Dec 1969
Posts: 221
Location: Las Vegas, Nevada
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 Posted: Sun May 14, 2006 7:39 am Post subject: Sodium & Calcium Bentonite - Heavy Metals in Soil |
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Greetings, all:
Although the utilization of clays for heavy metal detoxification has not been fully studied for human use, there are quite a few scientific studies that demonstrate the ability of clays to bind heavy metals:
"Conclusions. Our results clearly show that the addition of clay minerals, especially of Na-bentonite and Ca-bentonite, decreased the extractability of four metals during incubation. The decreased metal extractability was accompanied by an increase of soil respiration, Corg mineralization, microbial biomass C, and inorganic N and a decrease of metabolic quotient (qCO2), showing positive effect of clay mineral addition on soil biological parameters.
Recommendations and Outlook. The use of Na-bentonite and Ca-bentonite is promising tool for reduction the extractability and possible toxicity of heavy metals in sewage sludge-contaminated soil. Therefore, the soils polluted with heavy metals may be ameliorated by addition of clay minerals, especially Na-bentonite and Ca-bentonite."
- http://www.scientificjournals.com/sj/jss/abstract/ArtikelId/7403?PHPSESSID=bb39fc2321decd19283f96511d34eee2
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~ Jason
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