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Lisään tiedoston kun VoR julkaistaan Funding Information: The authors acknowledge the SUDDEN Project (Decision No. 320219) funded by the Strategic Research Council at the Academy of Finland and Pharmac Finland Oy is gratefully acknowledged for providing the support and WPBs investigated in this study. This work also made use of RawMatTERS Finland Infrastructure (RAMI) funded by the Academy of Finland. Publisher Copyright: © 2022, The Author(s). Waste pharmaceutical blister packages (WPBs) are a source of solid waste, which are composed of plastics and aluminum, therefore acting as a potential source for secondary aluminum. The structure of WPBs makes the recycling of aluminum notably more complex than typical aluminum recycling. Currently, WBPs are disposed of as municipal solid waste; thus, aluminum is lost from the circulation during incineration. In this work, three types of WPBs were studied, each with two plastic layers and a metallic layer. Delamination of WPBs to separate aluminum and plastic(s) was investigated by using a solution of organic solvents. The effects of temperature (30–50°C), acetone to isopropanol ratio (0–100 vol.%) and different types of WPBs on delamination behavior were investigated. The results suggest that aluminum separation and recovery from WPBs is 100% at optimum conditions. Moreover, an overall indicative flowsheet for recycling and post-processing of segregated aluminum from the plastic is also suggested. |
