Triboelectrostatic separation for granular plastic waste recycling: A review

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• 作者：Guiqing Wu ; Jia Li ; ^{weee@sjtu.edu.cn} ; Zhenming Xu
• 关键词：Plastic waste ; Waste recycling ; Triboelectrostatic separation
• 刊名：Waste Management
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：33
• 期：3
• 页码：585-597
• 全文大小：1288 K

文摘

The world¡¯s plastic consumption has increased incredibly in recent decades, generating more and more plastic waste, which makes it a great public concern. Recycling is the best treatment for plastic waste since it cannot only reduce the waste but also reduce the consumption of oil for producing new virgin plastic. Mechanical recycling is recommended for plastic waste to avoid the loss of its virgin value. As a mechanical separation technology, triboelectrostatic separation utilizes the difference between surface properties of different materials to get them oppositely charged, deflected in the electric field and separately collected. It has advantages such as high efficiency, low cost, no concern of water disposal or secondary pollution and a relatively wide processing range of particle size especially suitable for the granular plastic waste. The process of triboelectrostatic separation for plastic waste is reviewed in this paper. Different devices have been developed and proven to be effective for separation of plastic waste. The influence factors are also discussed. It can be concluded that the triboelectrostatic separation of plastic waste is a promising technology. However, more research is required before it can be widely applied in industry.