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Journal of Polymers and the Environment

, Volume 24, Issue 4, pp 372–384 | Cite as

Life Cycle Assessment of Poly(Lactic Acid) (PLA): Comparison Between Chemical Recycling, Mechanical Recycling and Composting

  • Marina F. Cosate de AndradeEmail author
  • Patrícia M. S. Souza
  • Otávio Cavalett
  • Ana R. Morales
Original Paper

Abstract

This paper presents a life cycle assessment (LCA) comparing three forms of poly(lactic acid) (PLA) disposal: mechanical recycling, chemical recycling and composting. The LCA data was taken from lab scale experiments for composting and hydrolysis steps. Polymerization data in chemical recycling was obtained from computer simulation. Mechanical recycling data from lab scale were combined with the data from a plastics commercial mechanical recycling plant. The analysis considered two different product systems based on the input of the recycled PLA in the product system. Considering the categories: climate change, human toxicity and fossil depletion, the LCA showed that mechanical recycling presented the lowest environmental impact, followed by chemical recycling and composting. Among the forms of recycling, the most important input was the electricity consumption.

Keywords

Life cycle assessment Poly(lactic acid) End-of-life Recycling 

Notes

Acknowledgments

The authors are grateful to FAPESP (Process Number 2014/09883-5) and CAPES by the financial support and to the company Wisewood Soluções Ecológicas S.A. (Brazil) for the recycling process data.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Marina F. Cosate de Andrade
    • 1
    Email author
  • Patrícia M. S. Souza
    • 1
  • Otávio Cavalett
    • 2
  • Ana R. Morales
    • 1
  1. 1.Department of Materials Engineering and Bioprocess, School of Chemical EngineeringUniversity of Campinas (UNICAMP)CampinasBrazil
  2. 2.Laboratório Nacional de Ciência e Tecnologia do Bioetanol (CTBE)CampinasBrazil

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