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http://dx.doi.org/10.7844/kirr.2021.30.3.70

Development of Material Separation Process for Recycling Waste Coffee Capsules  

Baek, Sang-Ho (Resources Recovery Research Center, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources)
Han, Yosep (Resources Recovery Research Center, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Seongmin (Resources Recovery Research Center, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources)
Davaadorj, Tsogchuluun (Department of Resources Recycling, University of Science and Technology)
Jeon, Ho-Seok (Resources Recovery Research Center, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.30, no.3, 2021 , pp. 70-81 More about this Journal
Abstract
This study evaluated the recyclability of waste plastics in used coffee capsules disposed of as municipal waste. For recycling, a new material separation process was developed to remove the coffee grounds through primary crushing, washing, sieving, and secondary crushing, followed by corona discharge electrostatic separation. Furthermore, for the under 10 mm size fraction samples, the aluminum removal and the plastic recovery were 95.4% and 98.3%, respectively, under optimal conditions. In addition, for the 15 mm fraction samples, the aluminum removal and the plastic recovery were 91.3% and 97.2%, respectively. To evaluate the recyclability of the separated waste plastics, the samples were pelleted, and their material properties were analyzed. No hazardous substances were detected, and the results were similar to those for homo-PP. Therefore, it was confirmed tha t sufficient functiona lity existed a s recycled PP. However, owing to the da rk color of the pellets, limited applications to black or dark products are expected.
Keywords
Coffee capsule; Recycling; Material separation; Corona discharge electrostatic separation; Recycled plastic;
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Times Cited By KSCI : 1  (Citation Analysis)
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