Theoretical and experimental study on the triboelectric separation of ternary plastics combination using fluidized bed

Autor: Xuejie Bai, Haifeng Wang, Yongqiang Xu, Zhenxing Zhang, Xiaolu Zhao, Jilan Shi, Tao Zhang
Rok vydání: 2021
Předmět:
Zdroj: Journal of Material Cycles and Waste Management. 23:2297-2306
ISSN: 1611-8227
1438-4957
DOI: 10.1007/s10163-021-01296-3
Popis: Triboelectric separation is an efficiency and promising method to recycle waste plastics. Fluidized bed has been proved an optimal tribocharger with excellent bipolar charging performance for binary granules. In this work, the tribo-charging characteristics of PE, PP, PET and PVC granules during fluidization were investigated using a bench-scale fluidized bed. The results showed that the triboelectric series obtained by fluidization charging was: (−)-PVC–PET–PP–PE-(+). The study of fluidization tribo-charge rate of plastics showed that the fluidization charge rate of five binary granule combinations was PE–PVC > PP–PVC > PE–PET > PP–PET > PET–PVC. And the saturated charge-to-mass ratio of five combinations shared the same trend with the tribo-charging rate. In addition, the tribo-charging and the separation characteristics of the ternary granules, namely PP, PET, and PVC were analyzed, and the results showed that PP plastics were mainly distributed near the negative plate, while PET and PVC were close to the positive one.
Databáze: OpenAIRE
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