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Turning waste to animal feed: Algae can help

Algae are being used to develop new technology to clean up waste. Excess waste nutrients produced from anaerobic digestion of food and farm waste are used to cultivate algal biomass for animal feed and other products of value.

Scientists at Swansea University in the UK will investigate this further in the € 5.5 million ALG-AD project. This project from Interreg North-West Europe (NWE) a European Territorial Cooperation Programme is funded by the European Commission. The project is being led by Dr Carole Llewellyn, Associate Professor in Applied Aquatic Bioscience at Swansea University. Dr Llewellyn explained: “The project stemmed from issues surrounding Anaerobic Digestion (AD). AD is used to process a significant amount of food and farm waste to produce biogas and a nutrient rich digest. With expansion of the AD industry across Europe there is excess nutrient waste. EU legislation and the introduction of nutrient-vulnerable zones across Europe to prevent nutrient run off causing pollution means that solutions need to be developed.

Swansea University is to receive over €1 million from the European Union matched with €700,000 from the Welsh Government. Photo: Dreamstime
Swansea University is to receive over €1 million from the European Union matched with €700,000 from the Welsh Government. Photo: Dreamstime

The ALG-AD project will combine algal and anaerobic digestion technologies. Algae require nutrients to grow and so the excess nutrients from AD of food and farm waste provide an essentially free, otherwise waste source of nutrients. The algae can then be processed to produce commodity products; so for example in this project we will be looking to use the cultivated algae biomass in animal feeds. In this way algae can help provide a circular economy solution for the waste industry and help ensure that agriculture is developed sustainably.”

Also interesting: All the latest insights in the application of algae in animal diets.

ALG-AD has been funded for 3.5 years. Swansea University is leading the project in collaboration with 10 partners comprising university, industry and policymakers across the UK, France, Germany and Belgium. Swansea University is to receive over € 1 million from the European Union matched with € 700,000 from the Welsh Government.

[Source: Swansea University]

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