Introduction to Life Cycle Assessment

1. Introduction to Environmental Life Cycle Assessment
2. The Idea and Principles of LCA
3. LCA: Goal and Scope of the Study
4. Life Cycle Inventory – General Idea
5. Scope of an LCA
6. Identifying the Boundaries of Analysis
7. System Boundaries
8. Life Cycle Inventory
9. Life Cycle Inventory – General Idea
10. Life Cycle Inventory – Important Considerations
11. Life Cycle Inventory – Modeling the System and Results
12. Life Cycle Inventory – Modeling the System and Results
13. Impact Assessment
14. Life Cycle Impact Assessment
15. Life Cycle Impact Assessment: Environmental impacts
16. Life Cycle Impact Assessment: Basis: The Inventory Table
17. Characterization of Environmental Impacts
18. Calculating Environmental Impacts
19. Environmental Concerns over the Life Cycle
20. Interpretation of the Results
21. Interpretation - Objectives
22. Interpretation - Elements
23. Summary of Life Cycle Assessment

The inventory is carried out on a process level. That means, in every life cycle phase, the in- and outputs of every process have to be accounted. This requires a lot of qualitative and quantitative information which is commonly laid down in special databases.

A general rule of process modeling is the conservation of mass and energy. When constructing a product system – such as a car –a consistency check whether mass of inputs equals mass of outputs (respectively energy) should be done.

Additionally, the relevance of data should be considered. Depending on the experience of the modeler, irrelevant information should be excluded. All data should be collected in consideration of the statements done in the scope definition. Irrelevant information, like that regarding environmental categories not being considered can be excluded.

References

• Eyerer, P,  Ganzheitliche Bilanzierung, Springer-Verlag, 354059356X 
• Rubin, ES,  Introduction to Engineering and the Environment, McGraw-Hill, 0072354674 
• ISO 14040-Series,  Environmental Management – Life Cycle Assessment, ISO,  
• Meadows, DL,  Die Grenzen des Wachstums, Deutsche Verlags-Anstalt, 3421026335 
• Enquete-Kommission "Schutz des Menschen und der Umwelt" des Deutschen Bundestages (Hrsg.),  Verantwortung für die Zukunft : Wege zum nachhaltigen Umgang mit Stoff- und Materialströmen, Economica-Verlag GmbH, 3870815035