Triboelectrostatic separation for granular plastic waste recycling: a review.
Triboelectrostatic separation for granular plastic waste recycling: a review.
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DOI：
10.1016/j.wasman.2012.10.014
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发表时间：
2013-03
期刊：
影响因子：
8.1
通讯作者：
Guiqing Wu;Jia Li;Zhenming Xu
中科院分区：
文献类型：
--
作者：
Guiqing Wu;Jia Li;Zhenming Xu
近几十年来，世界上的塑料消费量以惊人的速度增长，产生了越来越多的塑料垃圾，这使得它成为一个引起公众关注的问题。回收利用是塑料废物的最佳处理方法，因为它不仅可以减少废物，而且还可以减少生产新塑料所需的石油消耗。建议对塑料废物进行机械回收，以避免失去其原始价值。摩擦静电分离是一种机械分离技术，它利用不同材料表面性质的差异，使其在电场中相互电荷相反，发生偏转，并分别收集。它具有效率高、成本低、不用担心水处理和二次污染、处理粒度范围较广等优点，特别适用于颗粒状塑料垃圾。综述了摩擦静电法分离塑料垃圾的研究进展。不同的设备已经被开发出来，并被证明是有效的塑料垃圾分离。并对影响因素进行了讨论。由此可见，摩擦静电分离塑料垃圾是一种很有发展前途的技术。然而，在广泛应用于工业之前，还需要进行更多的研究。
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.