Chapter 4.2.5
Module: 4.
Potential environmental impacts identification in side-streams valorization technologies
Unit: 4.2.
Life cycle impact assessment, LCA assessment tools and their application
Chapter: 4.2.5.
LCA iterative approach
LCA steps are clearly ordered; however, LCA studies are iterative, which means that LCA operations are repeated, to approximate the results paying special attention to the most relevant processes, resources, and emissions. The most relevant processes will be identified taking into account partners' expertise and supported by the assessment run initially. The accuracy of this should be studied and then corrections may be made. It is a common practice carrying out one to three iterations before reaching the final results (Figure 4.2.2).
Figure 4.2.2 Details of the iterative LCA approach (ILCD 2010).