Arla trials use cow manure to generate biogas for milk tankers12 October 2020

L-R: Arla farmer Ian Barker and Arla tanker driver participating in the trial Adrian Fearn. Picture: James Robinson

Dairy cooperative Arla is transforming cow manure from its farms into vehicle fuel in a three-month trial.

Arla’s initiative will mean that for the first time, farmers will send cow manure to a nearby anaerobic digestion plant where it will be broken down into different components, including clean bio-methane, and converted into usable fuel.

The trial makes Arla the first UK business to use waste from its own farms to generate power for its fleet. The process will also create fertiliser which Arla farmers can put back on to farms, making it an entirely closed loop, something that hasn’t been done before.

The three-month test will involve two Arla tankers that have been adapted to run on biofuel transporting milk between dairy processing sites. Together they are expected to cover around 90,000km and help reduce Arla’s carbon impact by 80 tonnes. Arla will use manure from 500 cows – that’s around 190 tonnes of slurry each week – to create 27,000kg of biofuel to power the trial vehicles.

Ian Barker, an Arla farmer involved in the trial said: “Many of us recognise how valuable a cow’s milk is, but many aren’t aware that manure is just as important. Processing cow manure in this manner provides us with a limitless source of energy, plus the digestate, or solid matter, left over after the process makes an even richer fertiliser for my fields, so it’s a win-win.”

Arla is using the trial to assess opportunities for scaling biogas transport opportunities across its value chain. If it proves a success, it will lay clear foundations for how the dairy industry can join forces with government and other partners to enable new fuel solutions that reduce environmental impact.

William Dalrymple

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Arla Foods plc

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