Effluent based algae production possible but not competitive

A large scale study on algae farming by Waterstromen (effluent processing), Ingrepro Renewables (algae production) and Witteveen & Bos (engineering) demonstrates that production of feed components by effluent-based algae production is clean and sustainable but not competitive with conventional raw materials such as soya and maize. 

The findings are based on experiments with a test facility in Olburgen, using effluent from Aviko, producer of potato products. Under optimal conditions (CO2 concentration, temperature, roof, available nutrients, mixing and light) the facility yielded 18.3 tonnes dry matter per hectare.

Apart from their potential use for biofuels algae are rich in proteins and could therefore as an alternative for crop-based sources in feed. However, algae are still ten times more expensive than soya.

Algae could also be used as a source of higher value components in foods and food supplements, plastics, and resins, but volumes are too low for the minimal size required for minimal production.

Posted by Huib de Vriend, 25 April 2012

Source: BioBased Economy, 24 April 2012





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