The university explained that is conducting the research as part of a the GW4 research project, which is the South West Research Alliance that brings together the South West and Wales’ four research intensive universities: Bath,Bristol, Cardiff and Exeter.

Researchers from all four universities, in collaboration with Plymouth Marine Laboratory (PML) are now working with the Coal Authority and waste and recycling firm, Veolia to take untreated mine water samples from Wheal Jane tin mine in Cornwall (pictured) into the laboratory and grow algae in them.

The research will explore whether algae is effective in removing materials such as arsenic and cadmium from the mine water.

The project will the look to convert the algae into a solid from which it’s expected that precious heavy metals could 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. We’re putting contaminated water in and taking out valuable metals, clean water and producing fuel,” commented Dr Chris Chuck, whorrod research fellow from the University of Bath’s Centre for Sustainable Chemical Technologies.

“This technology could be applied to any type of mine or could even be used to clean up industrial effluent in the future,” continued Chuck.

Dr Mike Allen, microbial biochemist at PML added: «Acidic waste run off from mines is not a regional issue restricted to Cornwall, it’s a global problem. It’s a particular problem in the developing world where costly clean-up and remediation activities are ignored because of their high cost and low return.”

Dr Chris Bryan, lecturer in sustainable mining and minerals resourcing at the University of Exeter’s Environment and Sustainability Institute/Camborne School of Mines, commented: “By growing algae in mine water, which is currently expensive to remediate, we are providing an alternative economic model to traditional algal cultivation. The aim is to reduce the treatment costs while generating value at the same time from the algal biomass.”

The Wheal Jane tin mine, near Truro in Cornwall, closed in 1992. Since that time the UK government’s Department of Environment, Food and Rural Affairs (Defra) has funded the active mine water treatment scheme to protect the River Fal from pollution.

The scheme is managed by the Coal Authority and operated by Veolia.