Istanbul Technical University, Faculty of Mines, Mineral Processing Engineering Department, 34469 Maslak, Istanbul, Turkey.
Waste Manag. 2013 Sep;33(9):1795-9. doi: 10.1016/j.wasman.2013.05.006. Epub 2013 Jun 6.
Plastics have become the widely used materials because of their advantages, such as cheapness, endurance, lightness, and hygiene. However, they cause waste and soil pollution and they do not easily decompose. Many promising technologies are being investigated for separating mixed thermoplastics, but they are still uneconomical and unreliable. Depending on their surface characteristics, these plastics can be separated from each other by flotation method which is useful mineral processing technique with its low cost and simplicity. The main objective of this study is to investigate the flotation characteristics of PET and PVC and determine the effect of plasticizer reagents on efficient plastic separation. For that purpose, various parameters such as pH, plasticizer concentration, plasticizer type, conditioning temperature and thermal conditioning were investigated. As a result, PET particles were floated with 95.1% purity and 65.3% efficiency while PVC particles were obtained with 98.1% purity and 65.3% efficiency.
由于其廉价、耐用、轻便和卫生等优点，塑料已成为广泛使用的材料。然而，它们会造成浪费和土壤污染，而且不易分解。许多有前途的技术正在被研究用于分离混合热塑性塑料，但它们仍然不经济和不可靠。根据其表面特性，这些塑料可以通过浮选法分离，浮选法是一种具有低成本和简单性的有用矿物加工技术。本研究的主要目的是研究 PET 和 PVC 的浮选特性，并确定增塑剂试剂对有效塑料分离的影响。为此，研究了 pH 值、增塑剂浓度、增塑剂类型、调温条件和热调温等各种参数。结果表明，PET 颗粒的浮选纯度为 95.1%，效率为 65.3%，而 PVC 颗粒的纯度为 98.1%，效率为 65.3%。
