Arla Foods is testing new technology that will allow it to power its plants by converting waste into energy.

Scientists say the new technology creates energy 10 times faster than anaerobic digestion - which produces methane - and costs a quarter of the amount.

The technology works by pumping waste matter, like slurry, water or waste milk, into a ‘microbial’ fuel cell. Treated bacteria are then added, which speeds up the digestion process and produces hydrogen- based biogas.

“It is a relatively low-cost method and converts waste to energy in less than 48 hours, whereas methane production takes up to 21 days,” said a spokesman. “It also cleans up the waste and produces high-strength fertiliser, which can be sold on elsewhere.”

Arla Foods is working with Lindhurst Engineering, Nottingham University and treatment systems specialists Clearfleau on the technology. Additional funds have come from the Food and Drink iNet to examine how energy can be harnessed from different types of foods.

The technology is expected to be ready for sale next year.

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