Integration of thermochemical conversion processes for waste-to-energy: A review

Heeyoung CHOI, Yong Tae KIM, Yiu Fai TSANG, Jechan LEE

Research output: Contribution to journalArticlespeer-review

9 Citations (Scopus)


As a strategy for mitigating climate change and waste problems, waste-to-energy has rapidly emerged. Thermochemical conversion is a widely used waste-to-energy process that involves the degradation of waste structure at high temperatures under oxygenic or anoxygenic atmosphere. Integration of different thermochemical conversion processes enhances the overall efficiency of energy recovery from waste substances. To maximize the enhancement of waste-to-energy efficiency, the selection of thermochemical conversion system configurations is critical. Understanding possible configurations of hybrid thermochemical waste conversion processes (e.g., pyrolysis, gasification, hydrothermal carbonization, and aqueous-phase reforming) is necessary for further development and propagation of the integrated hybrid thermochemical waste conversion processes. To this end, we provide a systematic review of existing hybrid thermochemical waste conversion systems that integrate different thermochemical conversion processes for waste-to-energy. The challenges and future research suggestions regarding integrated thermochemical waste conversion processes are also discussed. Copyright © 2023 The Korean Institute of Chemical Engineers.

Original languageEnglish
Pages (from-to)1815-1821
JournalKorean Journal of Chemical Engineering
Early online dateJun 2023
Publication statusPublished - Aug 2023


Choi, H., Kim, Y. T., Tsang, Y. F., & Lee, J. (2023). Integration of thermochemical conversion processes for waste-to-energy: A review. Korean Journal of Chemical Engineering, 40, 1815-1821.


  • Energy recovery
  • Hybrid system
  • Process integration
  • Sustainable energy
  • Waste valorization


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