Aimplas is working on the development of new foams made with poultry feathers for sustainable hydroponic crop systems within the framework of Unlock, an initiative funded by the European Union’s Horizon 2020 research and innovation programme. Fourteen partners from seven European countries are working on this project, which is coordinated by Fundación CIDETEC with the aim of favouring a sustainable, circular bioeconomy focused on the creation of new value chains of byproducts such as poultry feathers, which are usually discarded or underused, as a means of developing rural areas and expanding their economies.
The main goal of this project is to design and demonstrate an economically and environmentally sustainable supply chain for a feather-based bioeconomy, with the aim of generating bio-based functional materials for agricultural applications. Unlock proposes manufacturing bioplastics and biotextiles from feather keratin, which have properties that can give the final product new functionalities, such as a biodegradation capacity adjusted to crop duration, providing the soil with organic nitrogen, not generating waste at the end of their life cycle and being cost competitive.
With the assistance of Terra Aquatica, Aimplas is responsible for the development and validation of one of the project products: foams for hydroponic crop systems. Hydroponics is a practice that allows vegetables to be grown directly in contact with a nutrient solution in an environment without soil. Polyurethane foams are currently the most popular solution for this kind of application due to their low density, low cost, and good water retention. However, this material can contain harmful chemicals, is difficult to sterilize, and is a major source of microplastics.
To improve the environmental impact and product life cycle, AIMPLAS is working on solutions for three different hydroponic crop accessories: cloning collars, oasis root cubes and minidiscs, an alternative substrate format similar to perlite.
These foams are made from a combination of a bioplastic matrix, a foaming agent and feathers treated by other partners in the consortium to extract their keratin.