공업화학 (Applied Chemistry for Engineering)

  • 제30권6호
  • /
  • Pages.707-711
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  • 2019
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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Catalytic Pyrolysis of Waste Polyethylene Terephthalate over Waste Concrete

  • Lim, Sejeong (Department of Biological Science, Daegu University) ;
  • Kim, Young-Min (Department of Environmental Engineering, Daegu University)
  • 투고 : 2019.10.22
  • 심사 : 2019.11.03
  • 발행 : 2019.12.10
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초록

The feasibility of waste concrete as a catalyst for the effective pyrolysis of polyethylene terephthalate (PET) was examined using thermogravimetric (TG) and pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS) analyses. TG analysis results indicated that the maximum decomposition temperature of PET is not altered by the use of waste concrete, showing similar values (407 ℃ and 408 ℃ at 5 ℃/min). Meanwhile, the volatile product distribution data obtained from the Py-GC/MS analysis revealed that the use of waste concrete promoted the deoxygenation reaction via converting the oxygen containing products such as benzoic acids, benzoates, and terephthalates to valuable deoxygenated aromatic hydrocarbons including benzene, toluene, ethylbenzene, and styrene. This suggests that the waste concrete can be used as a potential catalyst for the production of valuable aromatic hydrocarbons from PET pyrolysis.

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