US4GREENCHEM aims to design a biorefinery concept for the complete valorization of lignocellulosic biomass that is energy- and cost- efficient and based solely on green technologies. The concept combines mechanical pretreatment of the substrate with the aid of ultrasound to overcome its recalcitrance and disrupt inhibitors with mild CO2 hemicellulose degradation and with the enzymatic recovery of sugars and technologies for the valorization of the byproducts released in the process. Aim of the Project - Develop ultrasound (US) pretreatment that effectively disrupts the lignocellulosic matrix. - Further degrade lignocellulose with CO2 technologies to maximize release of sugars as main target products of the process. - Develop purification and conversion strategies for lignin-based products, in order to maximize the material valorization of the biomass components. - Valorize the solid residues of the product for energy. - Optimize the yield and reduce by 50% the cost of enzymatic hydrolysis of cellulose fibers. - Test for fermentability of the sugar fraction - Propose effective integration and upscaling to strategies pilot scale through the experienced industrial partners involved in the project. - Perform a thorough analysis of the outcomes of the proposed combination of technologies to evaluate the potential economic and environmental impacts and compare the proposed concept to existing technologies on the market and being currently developed.

ESTELLA is an ambitious initiative that proposes an innovative solution to improve the recyclability of low-recyclable materials: thermosetting composites. To this end, ESTELLA will work on the design of novel bio-based epoxy resins with inherent recyclability capabilities thanks to the introduction of Covalent Adaptive Network (CAN) in the original epoxy structure. CAN will provide the thermosetting epoxy resin with the ability to respond to certain stimulus that changes the state of its microstructure and thus, the ability to be reprocessed/re-polymerized (return to original monomers and fibres). A similar strategy will be applied to existing fossil-based epoxy formulations. In this way, the thermoset can be reprocessed or re-polymerized into new products and the fibres can be recovered as well. In addition, fibres of renewable origin will be used as reinforcement to manufacturing thermoset composites. ESTELLA research will address recycling techniques of any nature (chemical, biological and mechanical) to guarantee that the materials developed during the project can be successfully separated into their components in a safe and cost-effective way, hence maximizing the revenue of recycling activities. The validation of the developed recyclable materials will be carried out through economically and environmentally efficient manufacture processes (out-of-autoclave). Thus, new bio-composites will be designed and developed based on the premises of improving recyclability while meeting the demands of different sectors such as construction and leisure/mobility. Also, extensive work will be carried out to leverage the industrial application of the technologies and materials developed, taking into account safety, techno-economic, regulatory and intellectual property aspects.

ENZYCLE’ overall objective is to valorise and upgrading non-recycled plastic fractions through enzymatic processes to obtain high value-added products. For this, enzymes with a high hydrolytic activity on polyesters (PET) and on polyolefins (PE and PP) will be identified and selected in order to establish an efficient production process and developing recycling processes on plastic fractions that are currently not recycled. Additionally, ENZYCLE will deal with the problem with microplastics and their high environmental and health impact. Within ENZYCLE project, new processes for enzymatic recycling of multilayer packaging, post-consumer PET trays and clamshell and microplastics will be developed with the aim of enhancing the sustainability of these wastes, within a framework of circular economy, so as to save material and economic resources, creating new value chains by turning them into valuable products and closing the loop value chain by introducing the final obtained products back in the production process for plastic polymers.