Carbon dioxide assisted thermal decomposition of cattle excreta

Sang Ryong Lee, Jechan Lee, Taewoo Lee, Seong Heon Cho, Jeong Ik Oh, Hana Kim, Chiu Wa Tsang, Eilhann E. Kwon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

To develop the environmentally benign thermo-chemical process, this study placed great emphasis on the influence of CO2on pyrolysis of cattle excreta for energy recovery. To this end, this study evaluates the possible enhanced energy recovery from cattle excreta using CO2as reaction medium/feedstock in the thermal degradation of cattle excreta. The enhanced generation of CO in the presence of CO2reached up to 15.15 mol% (reference value: 0.369 mol%) at 690 °C, which was equivalent to ~ 4000 times more generation of CO. In addition to the enhanced generation of CO, the enhanced generation of H2and CH4in the thermal degradation of cattle excreta in CO2. Thus, the findings of this study revealed two genuine roles of CO2: 1) enhanced thermal cracking of volatile organic carbons (VOCs) evolved from the thermal degradation of cattle excreta and 2) direct reaction between VOCs and CO2via gas phase reaction.
Original languageEnglish
Pages (from-to)70-77
Number of pages8
JournalScience of the Total Environment
Volume615
DOIs
Publication statusPublished - 15 Feb 2018

Keywords

  • Cattle excreta
  • CO utilization 2
  • Pyrolysis
  • Waste-to-energy

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

Cite this