Vol. 23 No. 4 (2024): Revista UIS Ingenierías
Articles

Recycling treatments applied to rigid polyurethane foam (PUR) waste: Review article

Isabella López-Rodríguez
Universidad Nacional de Colombia
Joseph Alejandro Diaz-Saavedra
Universidad Nacional de Colombia
Janneth Torres-Agredo
Universidad Nacional de Colombia

Published 2024-11-25

Keywords

  • Rigid polyurethane foam,
  • recycling,
  • polymers,
  • treatments,
  • contamination

How to Cite

López-Rodríguez , I. ., Diaz-Saavedra , J. A. ., & Torres-Agredo, J. (2024). Recycling treatments applied to rigid polyurethane foam (PUR) waste: Review article. Revista UIS Ingenierías, 23(4), 99–112. https://doi.org/10.18273/revuin.v23n4-2024008

Abstract

Polyurethane rigid foam is a synthetic material that is generated by the reaction between a polyol and an isocyanate, which has excellent heat-insulating properties; its applications generate a waste, considered in Colombia a dangerous waste. For this reason, this article is a bibliographic review about the different recycling methodologies applied to rigid polyurethane foam waste (RPF). Alternatives will be presented from the field of chemical, mechanical and energy recovery, or thermal recycling, also including biological treatments. The articles reports that mechanical recycling stands out for its simple application and low costs. On the other hand, chemical treatment offers more alternatives for incorporating the waste in certain process; however, the high technology necessary for its application is difficult. Situation similar is reported to biological treatments, whose life cycle of microorganisms is essential for their application. While energy recovery or thermal treatments present a good opportunity for sustainable energy, however, their emissions are a factor to be careful with. All recycling alternatives allow us to generate a circular economy that is sustainable over time, reducing the negative impact of waste on people's health and the environment.

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