27 Apr '16, 1pm

6 ways to purify water without expensive technology

Arsenic is known to poison groundwater in at least 70 different countries, so scientists have been scrambling to find the perfect chemical solution to combat the hazard. A more natural approach uses the symbiotic relationship of a certain bacteria and algae to safely filter arsenic from drinking water. The bacteria converts arsenic into a less toxic and less soluble form so it can be more easily removed, while the algae provides a reliable supply of carbon. Carbon dioxide from the bacteria’s processing, in turn, feeds the algae in these innovative filters.

Full article: http://inhabitat.com/6-ways-to-purify-water-without-expen...

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