Marko Šakarašvili

This Centre of Excellence (CoE) focuses on fostering innovation in resource efficiency, promoting circular economy practices, utilizing local resources, ensuring safe material circulation, and educating researchers to reduce environmental impacts. It centers around four key areas: Strategic Mineral Resources (SMR), Carbon-Based Resources (CBR), Circular Technologies Upscaling (CTU), and Circular Business Eco-System and Modeling (CBEM). The SMR group maps critical materials in waste streams, including renewables, for extraction and reuse while minimizing hazardous waste. The CBR group develops ecofriendly pathways for essential chemicals and plastics, also assessing their environmental impact. The CTU group pioneers waste reduction and recycling methods for aqueous, and solid waste, incl. water purification. The CBEM group analyzes sustainable business ecosystems and value chains. This CoE's interdisciplinary approach will benefit both Estonia and Europe by advancing circular economy.

Sensing, capturing and separating enantiomers is important for environmental safety, agricultural chemistry, and drug design. The use of hemicucurbiturils is an effective strategy because of the combination of various monomers in a single-step templated mechanochemical synthesis. Due to the absence of bulk solvent the self-organizing efficiency is amplified and there is less waste - the process is green and sustainable. The current work will study the fundamentals of self-organization of hemicucurbiturils, the binding (capturing) of chiral molecules, and detecting chirality using supramolecular complexes. In the long term, the empirical observations will be combined with results from computational chemistry and cheminformatics to build models for predicting necessary monomers and reaction conditions to form macrocycles with desired properties. The outcomes of the project are expected to be highly useful for organizations and industries that monitor, use, or manufacture chiral compounds

NdFeB are the strongest and highest energy density permanent magnets used in both green energy production in wind generators and electric cars. NdFeB production technology is comparable to that of lithium battery: both are of key importance, require limited mineral resources to be mined, recycling is difficult. The recycling of NdFeB would reduce the EU's dependence on China being more economical and cheaper compared to mining. The project focuses on the development of recycling of sintered NdFeB. We focus on hydrogen decrepitation and HDDR technologies for NdFeB magnets, while also consider alternatives. The input of the technological process is NdFeB collected from circulation and the output is a NdFeB semi-product that can be used in a sintered, bonded, ALD covered or 3D printed NdFeB industrially scalable production pot. The largest NdFeB plant in the EU is under construction in Narva. The methods developed in the project would help improve existing processes for circular economy.