LCA Food 2012 in Saint Malo, France! - Manifestations et colloques ...

PARALLEL SESSION 3B: PACKAGING 8 th Int. Conference on LCA in the
Agri-Food Sector, 1-4 Oct 2012
for environmental impacts is therefore of limited interest. The model developed in this study is a useful tool
to select most interesting processes in terms of environmental impacts. This process being selected, its economical
viability must then be tested by classical methods: Net Present Value, annual cost (Ouattara et al.,
2012).
5. Conclusion
The model of the PET packaging management system proposed here is particularly interesting to quantify
the environmental impacts and determine optimal targets. The use of a genetic algorithm is an efficient
method to define the optimal allocation of bottle waste between valorisation paths. The use of multirecycling
loops for PET bottles reduces significantly the environmental burdens. According to the number of
recycling trips possible, the optimal collection rate varies between 80 and 90% which is in average ten percent
higher than the target values fixed for 2019 in France.
This could lead to new strategies for food packaging companies like developing new partnerships with local
communities and waste treatment companies.
Further work is now devoted to the application of this methodology both to LCA of other food plastic
packaging (polylactic acid (PLA) bottles and bio-based PET bottles), other food packaging (paper, glass or
metals) and to the optimal material supply for bio-based ethanol synthesis used in different biomaterials by
comparing different crops.
6. References
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