In the rapid growth of electric mobility, battery production is taking off. In particular, ‘Lithium-ion batteries are central to the energy transition. They power our smartphones, electric vehicles and even the power grid. But with this growth also come challenges. Battery factories release large quantities of solvents, such as NMP. This substance is essential for coating electrodes. The challenge? Today, recovering NMP is complex and costly. These solvents are often contaminated with metals. These metals disturb the purity of the solvent, limiting its reuse. Existing drying and distillation processes to recycle the solvent suffer from inefficiencies. This creates waste, despite recycling efforts. In the Innomem project, Indaver and VITO are working together to find a solution. Through advanced membrane technology, we are investigating how to effectively remove these metals, the actual contaminants, at sub-ppb level. That level is essential for the strict purity standards of the battery and microelectronics industries. This allows us to reuse solvents in a sustainable way. Indaver and VITO are testing existing distillation processes with this new membrane technology. This not only ensures a cleaner and more sustainable way of solvent recycling, but also reduces costs and CO2 emissions. Thus, together we realise a future in which the complete but safe reuse of critical substances becomes a reality. The result? Solvents that are so pure that they can also be used in the pharmaceutical industry. Moreover, if we improve the reuse of recovered NMP in battery production, there is potential to extend this technology to other sectors such as microelectronics. This will strengthen our position in the Electronic Grade solvents market. This is an important step towards full circular recycling, where materials are not only reused, but also given higher value. At Indaver, we are determined to improve this process further. Together with our partners, such as VITO, we are taking steps to realise a future in which the full but safe reuse of critical substances becomes a reality.