Interesting, I have seen the use of this technology in the rural areas of Uttar Pradesh India.  Iron nails are used to remove arsenic presence in water. Locally produced filters are very economical. Are there any published research ?

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Interesting, I have seen the use of this technology in the rural areas of Uttar Pradesh India.  Iron nails are used to remove arsenic presence in water. Locally produced filters are very economical.

Are there any published research ?  

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Yes, you can get some info. @ CAWST website and Sehgal foundation website, resp.

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