Optimization of pyrolysis conditions of polyurethane for recycling of solid products

Eun Jung Im, Sung Hyun Kim, Kyong Hwan Lee

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This study examined the optimum pyrolysis conditions of polyurethane for the yield of a solid product with a high iodine number using central composite design (CCD) on the secondary model in response surface methodology (RSM). The temperature, heating rate and total heating time are factors influencing the yield of solid products. The temperature was estimated from the highest factor influencing the solid product yield (Y1) and the iodine number (Y2). The coefficient used for determining Y1 and Y 2 were found to be 0.94 and 0.84 with a p-value of 0.0013 and 0.0361, respectively. The optimal values for the solid yield and iodine number were calculated from the second regression formula. The solid yield and iodine number were estimated to be 15 g and 582 mg/g under the optimum condition, respectively. Under the optimum conditions determined in this study, the experimental results were 14.8 g and 558 mg/g, respectively.

Original languageEnglish
Pages (from-to)184-190
Number of pages7
JournalJournal of Analytical and Applied Pyrolysis
Issue number2
Publication statusPublished - 2008 Jul

Bibliographical note

Funding Information:
The authors gratefully acknowledge the financial support by Center for New & Renewable Energy Development and Dissemination (CNEDD), in Korea Energy Management Corporation (KEMCO), Korea.


  • Polyurethane
  • Pyrolysis
  • Recycling
  • Response surface methodology

ASJC Scopus subject areas

  • Analytical Chemistry
  • Fuel Technology


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