Thermogravimetric Kinetic Study of Automobile Shredder Residue (ASR) Pyrolysis

Soyoung Han, Yong-Chul Jang, Yeon-Seok Choi and Sang-Kyu Choi
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Soyoung Han: Korea Institute Machinery & Materials, Daejeon 34103, Korea
Yong-Chul Jang: Department of Environmental Engineering, Chungnam National University, Daejeon 34134, Korea
Yeon-Seok Choi: Korea Institute Machinery & Materials, Daejeon 34103, Korea
Sang-Kyu Choi: Korea Institute Machinery & Materials, Daejeon 34103, Korea

Energies, 2020, vol. 13, issue 6, 1-16

Abstract: The separated and sorted combustibles from automobile shredder residue (ASR) can be pyrolyzed and used as a heat source or liquefied to produce materials with added value. In this study, the thermal decomposition properties of ASR were determined and thermal kinetic studies were performed. Four types of raw materials were separated from ASR and mixed at a constant ratio: 38.5 wt.% of plastic; 31.6 wt.% of fiber; 17.3 wt.% of sponge; and 12.3 wt.% of rubber. Pyrolysis kinetics analysis was carried out using the Thermogravimetric analysis-derivative thermogravimetry (TGA-DTG) technique and activation energy were calculated by differential and integral isoconversional model methods, Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), and Friedman. Thermogravimetric analysis was performed under nitrogen with four temperature rate conditions from room temperature to 800 °C. In the thermal degradation profile, peaks representing mass loss rates were observed for each sample at different temperature ranges. It was observed that the final mass reduction temperature in the mixed samples was lower than in the individual samples. The activation energies of plastics and rubbers were 105.39 kJ/mol and 115.20 kJ/mol respectively. The sponge foams and fibers were 172.59 kJ/mol and 160.30 kJ/mol respectively. The mixed sample had an activation energy value of 159.56 kJ/mol. The basic physicochemical and pyrolysis characteristics of ASR were examined to be used as basic data for the recycling of ASR for future pyrolysis.

Keywords: ASR (Automobile Shredder Residue), thermogravimetiric analysis; thermal kinetic analysis; isoconversional method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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