Glass bottles to make water filtration systems in Midlothian
A quarter of Scotland's green glass bottles are to be recycled to make water filtration systems at a new plant in Midlothian.
Dryden Aqua's £5m plant uses the glass in filters for drinking water, industrial waste water and pools.
Officials said it was a fast growing industry.
The company expects it will need to process all of the country's green glass within the next few years to meet demand for its products.
Environment Secretary Richard Lochhead, said: "This is a revolutionary system from Dryden Aqua which exemplifies the technological and environmental expertise that Scotland is famous for.
"It is also a major investment in Scotland's green credentials and places us at the forefront of the move towards a zero waste nation.
"This is a great example of upcycling where we create something of higher value than the original substance.
"This technology can be used in developing countries to ensure cleaner, healthier water for all, showcasing the global reach and importance of Scottish innovation, which is a key element of the Hydro Nation agenda."
Dr Howard Dryden, Dryden Aqua's chairman, said: "Our product can eliminate up to 90% of the pollution load from industry and municipal waste water sites and as regulations become more stringent we hope that more people will look to Scotland for the answer to their water challenges."