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Valorising Municipal Solid Waste and Fish Waste For High-Added Value Applications:
The Dafia Project

The DAFIA Project is funded by the EU Research and Innovation Programme Horizon 2020. It aims a reducing the heavy dependency on fossil resources by converting municipal solid waste (MSW) and marine rest raw material (MRRM) into high added value product. Minecolours as Turkish Masterbatch Manufacturer is proud of being a part of this Project. Nowadays in Europe approximately 150 million tonnes of municipal solid waste (MSW) are landfilled every year.
Furthermore, more than 1.3 million tonnes of marine rest raw material (MRRM) are generated in Europe each year , produced mostly by fishing countries like Norway and Denmark. Finding a sustainable production and exploitation of renewable biological resources is an ongoing technical challenge. In facts, one of the European Commission's key priorities is the implementation of environmental and waste policies, according to the 7th Enviroment Action Programmme and the Roadmap to a resource efficient Europe.
In accordance with these priorites, the EU Research and Innovation Programme Horizon 2020 funded the DAFIA project. This project has designed a cascade approach in order to maximize the value of each component of the MRRM and MSW, while limiting negative impacts on the environment and reducing the heavy dependency and fossil resources.

New conversion route for waste valorisation. With this aim, DAFIA partners explore the conversion routes of MSW and MRRfig-1M from the fish processing industries in order to obtain high added value products, such as flame retardants, edible/barrier coating and chemical building blocks (dicarboxylic acids and diamine) to produce polyamides for a wide range industrial applications. Until now, the production of more complex chemicals has been limited by large-scale economic feasibility due to pre-treatment and conditioning costs of the recalcitrant raw materials. To overcome this challenge, DAFIA approach consists in developing more cost-efficient pre-treatment and__ fractionation methods that will open for the use of MSW as a general fermentation substrate, utilising either the carbohydrates only or the complete organic fraction.

Conditioning treatment of residue The research activities started with the selection, characterization and pre-treatment of the raw materials, observing variability with stock associated substrates for MSW — which is not dependent on regional or seasonal parameters — and enzyme doses standardized on total glucan content to minimize variability effect. Sorted organic fraction MSW and/or mixed waste are good candidates while unsorted MSW has high amounts of inerts and lower sugar content. Differently, no variability has been observed for the salmon waste. For both streams, freezing is a suitable preserving technique for long term storage. Then, the initial fractionation of lipids, proteins and other water- soluble compounds has_ been carried out successfully achieving yields above 90%. In the meantime, the most cost-efficient technology for isolation and purification of nucleic acids and gelatine has been developed.

Bio-based Flame retardant In parallel, these extracted components have been’ used both for the production of novel green flame retardants (FR) (patent filled) as a viable alternative toammonium polyphosphate and the compatibilization of nucleic acid-based FRs to bio-polyamides, which requires high processing temperatures. The new compounds are being validated mainly for the automotive sector, using the most accepted fireproofstandards utilized by the main car manufacturers. Active coatings from fish waste Gelatine obtained from marine residues is an excellent alternative to animal sources. Due to its uniquen properties, gelatine might be used for the preparation of both edible and barrier coatings for fish and packaging for fish products and other foods that require barrier properties, prolonging their shelf life.

Chemical building blocks from MSW fermentation The major challenge addressed in DAFIA project is developing a robust microbial strain able to produce the targeted chemical building blocks (diacids and diamines) with high productivities by fermentation of pre-treated MSW and MRRM components. Fermentation process is being optimized at laboratory scale using low pH values, which decrease the risk of contamination by bacteria and = allow’ the production of organic acids in their undissociated form, reducing the purification costs. Once optimized, the most promising process will be — a tested at pilot scale to evaluate the feasibility of the transformation into marketable products.

Furthermore, the diamines and diacids obtained from the fermentation of MSW are being used as monomers in the synthesis of different polyamides with a bio- content close to 100%.

Techno-economic validation of the achievements Finally, a life cycle and techno- economic viability assessment will be conducted to evaluate the impact of the full process proposed in DAFIA project to ensure compliance with legislation, to maximise market acceptance and facilitate increasing optimisation of these processes and products. Innovation management, preliminary business plan, dissemination and exploitation activities regarding the project results are being done together with the initial contact with possible stakeholders outside of DAFIA consortium interested in the project results.

CONTACT: If you need any more information please visit DAFIA webpage:

Mine Colours Contact: Nalan Onar

AIMPLAS Contact: Belen Monje Martinez

Article by: Mine Plastic