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==Types of remediations==
 
==Types of remediations==
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===Ferritin===
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Ferritin is protein found in humans that stores iron, and releases it later on when needed. In studies they have found that by using iron it can reduce many of the contaminates and make them safer. When this nanoparticle is introduced in a solution of Hexavalent chromium, for example, it has reduced it into Trivalent chromium. This chemical can be easily filtered out of the water, and is less toxic then the Hexavalent chromium.[http://www.spacedaily.com/news/nanotech-04zzq.html] This has also been shown to reduce and precipitate Technetium-7, which is a growning problem around nuclear waste sites. This however does not completely solve the problem, it just make the goundwater safer to use with less risk of the health affects.
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[http://aem.asm.org/cgi/content/abstract/66/9/3743]
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===Palladium===
===Downside?===
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Palladium when used in conjuction with iron has shown some amazing results.  This is currently being used to breakdown Trichloroethylene from the groundwater altogether. This process works by first injecting these particles down into an underground water pocket.  From there the paricles can freely move through the water, because of their hydrophilic outside layer. It can then draw in the trichloroethylene molecules and break them into harmless byproducts like non-toxic ethane, that are safe in the water. [http://www.csmonitor.com/2005/0210/p14s01-sten.html] This is also better to use then some iron nanoparticle, because when some react with the Trichloroethylene it actually makes a more toxic vinyl chloride.[http://www.sciencedaily.com/releases/2005/02/050224121521.htm]
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==Downside?==
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Just as in everything in life there is a downside.  In this case as briefly mentioned before, certain nanoparticles can react more dangerously then others.  This is a concern especially in areas that are contaminated with more then one contaminant.  If you were to added the wrong nanoparticle or one that had the wrong coating, you could make the water even more lethal to drink or use.  There  is also the case that there isn't that much long term test on some of these reactions.  Most are done in labs, but few are test in the actual ground. we also aren't sure of what the nanoparticle will do in the soil after so many years.
     
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