Prof. Anne VENTURA, France
Life Cycle Assessment: understand key issues concerning bio-based materials
Bio-based materials are considered as a solution to face the stake of climate change. Indeed, plant-based products are considered beneficial because they absorb CO2 from the air through photosynthesis, and those used in construction are usually derived from agricultural by-products in a circular economy logic. My purpose is to explain why these intuitive benefits do not always correspond to reality. Both by commenting on common climate change indicator and its dynamic aspects, and by explaining how circular economy solutions encounter important and sometimes difficult to control limitations when implemented. LCA itself, in its current prescriptive form, does not adequately assess these issues. I will therefore conclude by opening up a new LCA method, called "transition LCA", which allows for better modelling and assessment of these issues.