| Literature DB >> 29518601 |
Yafei Shen1, Xingming Chen2, Xinlei Ge3, Mindong Chen3.
Abstract
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.Entities:
Keywords: Char characterization; E-wastes; Plastic; Pyrolysis; Waste printed circuit boards (WPCB)
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Year: 2018 PMID： 29518601 DOI： 10.1016/j.jenvman.2018.02.096
Source DB: PubMed Journal: J Environ Manage ISSN： 0301-4797 Impact factor: 6.789