Tuesday, 24 March 2015

Gold and other valuable metals may be harvested from sewage

There's gold – and lead, apparently – in them thar biosolids (Photo: Heather Lowers, USGS ...


Mining operations tend not be very good for the environment, nor does the disposal of treated solid waste that still contains potentially-toxic metals. Now, however, scientists are looking into taking that waste and harvesting its trace amounts of metals such as gold, silver and platinum. Doing so could ultimately reduce the need for mining and decrease the amount of metals entering the environment, while also turning sewage into a source of revenue. .. Continue Reading Gold and other valuable metals may be harvested from sewage



Section: Environment



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from Gizmag Emerging Technology Magazine http://ift.tt/1IruQqc

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