Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 111, Issue -, Pages 216-223Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jaap.2014.11.006
Keywords
Chinese fir sawdust; Waste printed circuit boards; Vacuum; Co-pyrolysis; Heating conditions
Funding
- National High Technology Research and Development Program of China (863 program) [2006AA06Z375]
- Fundamental Research Funds for the Central Universities of Central South University of China [1177-721500193]
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Vacuum co-pyrolysis of Chinese fir sawdust (CFS) and waste printed circuit boards (WPCBs) at different heating conditions were examined in this paper. The composition of the pyrolysis oils was analyzed by gas chromatography-mass spectrometry (GC-MS). It was found that the content of most of the compounds with relatively long molecular chain had a higher value at relatively low temperature (400-600 degrees C) and short holding time (10 min), and decreased at relatively high temperature (800 degrees C) and long holding time (30-90 min); while the content of most of the compounds with relatively short molecular chain presented an adverse trend. The co-pyrolysis process was also analyzed by thermogravimetric (TG) analysis with evolved product analysis by Fourier transform infrared (FTIR) spectroscopy. The results showed that the volatiles were mainly generated between 300 and 500 degrees C, and after 500 degrees C, noncondensable gases (CO2, CO and CH4) were the main components in the pyrolysis process. (C) 2014 Elsevier B.V. All rights reserved.
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