Session 7

Green manufacturing towards a circular economy: perspectives from Brazilian manufacturing industries
Diogo Aparecido Lopes Silva
Federal University of São Carlos, Brazil

Green manufacturing (GM) is to produce products with a minimal negative environmental impact. In a perspective of Circular Economy, Life Cycle Assessment (LCA) can be used with GM concept to produce products with lower impacts not only at the manufacture phase, but also in a life cycle perspective to avoid also indirect impacts due to upstream and downstream environmental burdens. This idea has gained prominence especially since last years, and this paper aims to discuss the integration of GM and LCA with focus on two case studies in manufacturing industries from Brazil. GM and LCA were integrated in a methodological framework and tested in industries from São Paulo State of Brazil. The proposed GM framework is more comprehensive to implement than others from literature. It is more comprehensive because it was developed based on a systematic review of 1,485 papers on the topic. Two different case studies were performed: 1) wood industry – production of particleboards; 2) automotive industry – production of exhaust valves. The GM methodological framework is composed of ten stages and each stage has its own activities, tools and goals. LCA is the baseline for the GM framework application, however, there are also other tools to be used on this process too, such as matrixes, diagrams and other quality and management tools. For the case study 1) it was identified opportunities to reduce up to 21% of upstream impacts, and also to minimize up to 41% of downstream impacts during the post-use phase of the product from making simple changes at manufacturing level of particleboards production. For case study 2) it was found opportunities more focused at manufacturing level, from reducing up to 71% of impacts if machines idle time can be minimized. Finally, more tests in manufacturing industries are desired for the proposed GM+LCA framework.