Strategic use of CO₂ for co-pyrolysis of swine manure and coal for energy recovery and waste disposal

Sang-Ryong LEE, Jechan LEE, Taewoo LEE, Yiu Fai TSANG, Kwang-Hwa JEONG, Jeong-Ik OH, Eilhann E. KWON

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Here in this study, the genuine role of CO₂ in co-pyrolysis of swine manure and coal was mainly investigated to increase the thermal efficiency of the thermo-chemical process. The TGA test of swine manure and coal revealed that the CO₂ co-feeding impact on any reactions (≤740 °C) between CO₂ and the sample surface (i.e., heterogeneous reaction) should be excluded. A batch-type co-pyrolysis revealed two genuine CO₂ co-feeding impacts on co-pyrolysis of swine manure and coal. First, CO₂ can be an additional source for C and O through a plausible reaction between pyrolytic oil and CO₂, which led to the enhanced generation of CO by the conversion of volatile organic carbons (VOCs) evolved from thermal deconstruction of pyrolytic substrate. Second, CO₂ expedite the thermal cracking of VOCs, which also resulted in the more generation of H₂ and CH₄. Two genuine roles of CO₂ in co-pyrolysis of swine manure and coal occurred independently. All experimental findings will be directly applicable to the gasification process since pyrolysis is an intermediate step for the gasification. Copyright © 2017 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)110-116
JournalJournal of CO2 Utilization
Volume22
Early online dateSep 2017
DOIs
Publication statusPublished - 2017

Citation

Lee, S.-R., Lee, J., Lee, T., Tsang, Y. F., Jeong, K.-H., Oh, J.-I., et al. (2017). Strategic use of CO₂ for co-pyrolysis of swine manure and coal for energy recovery and waste disposal. Journal of CO2 Utilization, 22, 110-116.

Keywords

  • Swine manure
  • Coal
  • Co-pyrolysis
  • Energy recovery
  • Carbon dioxide

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