To be more sustainable, chemical products need to be simplified
Researchers publish guidelines on how to rethink chemistry for a circular economy in a Science Magazine article
Taking pollution and increasingly scarce raw materials into account, the chemical industry must shift its products and processes towards a circular economy. This implies that waste must be primarily avoided, and products need to be developed in a way that they can be reused or recycled. In their article in the renowned journal Science Magazine, Prof. Klaus Kümmerer, Professor of Sustainable Chemistry and Material Resources at the Leuphana University of Lueneburg (Germany) and Director of the ISC3 Research and Innovation Hub, Prof. John Clark, University of York, and Prof. Vania Zuin, University of São Carlos, put forward guidelines on how to rethink chemistry to facilitate a circular economy.
Shaping a Circular Economy
In a circular economy, products are in the first place used as long as possible, and then are reused, repaired, and recycled. “Circularity saves raw materials and reduces environmental impacts. However, today many products cannot be recirculated or recycled because low concentrations or high dispersion make it impossible to reuse them”, describes Kümmerer the limitations of this approach. “Often, when we reuse materials, we downcycle them, because it is not possible to restore the same high-quality material. The solution here is a better product design from the beginning.”
Keeping it simple
In their article, the authors suggest that scientists decipher chemicals at the atomic and molecular level and decode how their manufacturing processes can fit into the concept of a circular economy. This implies simplifying the molecular complexity so that products are as elementary as possible in their composition, contain fewer additives, and avoid toxic components and those that are difficult to separate during the recycling process. Altogether, the authors put forward 15 guidelines on how chemistry can be integrated into a circular economy. They demand that companies assume responsibility for their products throughout their complete life cycle and hope that they become more involved in the research and development of recycling technologies, as well as improved product design in the sense of the circular economy.
Klaus Kümmerer, James H. Clark, Vânia G. Zuin, Rethinking chemistry for a circular economy, Science, January 24, 2020, Issue 6476, pp. 369-370, DOI: 10.1126 / science.aba4979