Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 214, Issue -, Pages 94-103Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2018.02.096
Keywords
E-wastes; Waste printed circuit boards (WPCB); Plastic; Pyrolysis; Char characterization
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Funding
- Startup Fund for Introducing Talents at NUIST [2243141501046]
- National Science Foundation of China [21407079, 91543115, 91544220]
- Natural Science Foundation of the Higher Education Institutions of Jiangsu Province [16KJB610012]
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This work studied the disposal of the non-metallic fraction from waste printed circuit board (NMF-WPCB) via the chemical pretreatments followed by pyrolysis. As a main heavy metal, the metallic Cu could be significantly removed by 92.4% using the HCl leaching process. Subsequently, the organic-Br in the brominated flame retardants (BFRs) plastics could be converted into HBr by pyrolysis. The alkali pretreatment was benefit for the Br fixation in the solid char. The Br fixation efficiency could reach up to 53.6% by the NaOH pretreatment followed by the pyrolysis process. The formed HBr could react with NaOH/KOH to generate the stabilized NaBr/KBr. Therefore, the integrated chemical pretreatment could be used for the eco-friendly disposal of the NMF-WPCB via pyrolysis. (C) 2018 Elsevier Ltd. All rights reserved.
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