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http://dx.doi.org/10.14478/ace.2019.1084

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)
Publication Information
Applied Chemistry for Engineering / v.30, no.6, 2019 , pp. 707-711 More about this Journal
Abstract
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.
Keywords
Polyethylene terephthalate; Aromatic hydrocarbons; Waste concrete; Py-GC/MS;
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