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British scientists and authorities are conducting cutting-edge research aimed to clean up a flooded tin mine in Cornwall county by using algae to harvest precious heavy metals in toxic water and produce biofuel at the same time.
The project, led by the GW4 Alliance, has brought together the universities of Bath, Bristol, Cardiff and Exeter, in collaboration with Plymouth Marine Laboratory (PML), the Coal Authority and waste management group Veolia. And while it is still in its very early stage, the parts involved hope it delivers an effective new way to deal with toxic waste.
The team, which is taking untreated mine water from the Wheal Jane tin mine, has already began growing algae in those samples to explore whether the organism is effective in removing harmful materials, such as arsenic and cadmium.
The plan is to convert the lab-grown algae into a solid from which heavy metals can be extracted and recycled for use in the electronics industry. The remaining solid waste will then be used to make biofuels.
“It’s a win-win solution to a significant environmental problem,” said in a statement Dr. Chris Chuck from the University of Bath’s Centre for Sustainable Chemical Technologies. “We’re putting contaminated water in and taking out valuable metals, clean water and producing fuel.”
The team hopes to begin a pilot project at the mine in the New Year. The aim will then be to scale it up.
If successful, the scientists believe the technology could be used to treat many forms of environmental pollution.
Image courtesy of the GW4 Alliance.
4 Comments
Spencer Gordon
This is not new, it may be to Cornwall county. It is actually a process called phytomining, and you can find heavy metal accumulators (plants that adsorb metals) on WIKIPEDIA!!! It is often used for the bio-remediation of mines, but is not economical independently.
Andy Whitten
The concept is not new, as few technical concepts truly are, but possible integration with other processes such as current biofuel production and metals separation techniques would be. I for one am glad to see this further pursued for in my opinion it has better potential than bacterial processes for semi-passive remediation and possible secondary recovery. Dreaming bigger, maybe even as a primary metallurgical recovery method at some point. I am excited for those involved.
Bishop Hammy
Bull Rushes also clean up waste water and some varieties are better than others. From my reading they can even change toxic heavy metals into something safe.
Wilkins
The R.I.I.A. once had 20-40 such bio-fools when I was a member. Perhaps the best source of minerals–not transmutation–is those that “fix” bands, or, deposits of minerals in the Earth. And, from this site a good old Cornish pastie would be of no use for a nearby miner.