Arsenic contaminated ground water become a big problem in various countries. In particular in rural areas. this is the matter of discussion.
Arsenic in groundwater is reported in various part of India. Mostly in rural/tribal areas, people are depend on groundwater. If there is no alternative source of water, the native are forced to drink such contaminated water and suffered from Arsenic diseases. We need some method which can be affordable and approachable by poor villagers/tribal.
Some approaches:
http://news.rice.edu/2006/11/09/nanorust-cleans-arsenic-from-drinking-water/
http://www.newscientist.com/article/dn10496-cooking-up-nanorust-could-purify-water.html
http://www.eurekalert.org/pub_releases/2002-10/uog-rcn093002.php
http://www.eurekalert.org/pub_releases/2005-12/pc-pft120605.php
http://www.nature.com/news/1998/021001/full/news021001-14.html
http://www.nature.com/news/1998/040510/full/news040510-4.html
http://scienceblog.com/community/older/2004/9/20048536.shtml
http://www.economist.com/node/17956927
Regards,
Joachim (not an expert)
Arsenic in groundwater can be removed by the simple method of Phytoremediation i.e., by passing contaminated water through the specially constructed wetland bed with Hyperaccumulator plants such as Pteris vittata, P.cretica, P. longfolia, P. unbrosa (fern species), which can concentrate arsenic upto 1% in its dry matter. It has also been reported to concentrate Arsenic upto 23 g.kg-1 in its fronds. Phosphate fertilisation will enhance the arsenic removal capacity of the plants. Alternatively any plant found to be growing on arsenic polluted marshy area can be used for this purpose.
We are using Chemometric technique for arsenic and fluride detection in water.
Prashant, thanks for your interest in arsenic problem. Chemometric techniques for de arsenification and defluoridation is not much known to the people. A mass awareness is required to popularise this technique in the arsenic and fluoride effected areas. Because In coming years fluoride and arsenic will be major groundwater contamination problem in India and various other countries.
Jasim, thanks for your interest in this question. Arsenic contamination in drinking water is big problem in many countries. RO is okay but many people may not effords to bye. We need to develop som economical method.
Arsenic in ground water and intern enriched to grains, vegitable , fruits . Thus arsenic values are increasing in various countries including India.
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