Tribo-Electrostatic Separation Analysis of a Beneficial Solution in the Recycling of Mixed Poly(Ethylene Terephthalate) and High-Density Polyethylene

Wieslaw Lyskawinski, Mariusz Baranski, Cezary Jedryczka, Jacek Mikolajewicz, Roman Regulski, Dariusz Sedziak, Krzysztof Netter, Dominik Rybarczyk, Dorota Czarnecka-Komorowska and Mateusz Barczewski
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Wieslaw Lyskawinski: Faculty of Control, Robotics and Electrical Engineering, Institute of Electrical Engineering and Electronics, Poznan University of Technology, 60-965 Poznan, Poland
Mariusz Baranski: Faculty of Control, Robotics and Electrical Engineering, Institute of Electrical Engineering and Electronics, Poznan University of Technology, 60-965 Poznan, Poland
Cezary Jedryczka: Faculty of Control, Robotics and Electrical Engineering, Institute of Electrical Engineering and Electronics, Poznan University of Technology, 60-965 Poznan, Poland
Jacek Mikolajewicz: Faculty of Control, Robotics and Electrical Engineering, Institute of Electrical Engineering and Electronics, Poznan University of Technology, 60-965 Poznan, Poland
Roman Regulski: Faculty of Mechanical Engineering, Institute of Mechanical Technology, Poznan University of Technology, 60-965 Poznan, Poland
Dariusz Sedziak: Faculty of Mechanical Engineering, Institute of Mechanical Technology, Poznan University of Technology, 60-965 Poznan, Poland
Krzysztof Netter: Faculty of Mechanical Engineering, Institute of Mechanical Technology, Poznan University of Technology, 60-965 Poznan, Poland
Dominik Rybarczyk: Faculty of Mechanical Engineering, Institute of Mechanical Technology, Poznan University of Technology, 60-965 Poznan, Poland
Dorota Czarnecka-Komorowska: Faculty of Mechanical Engineering, Institute of Materials Technology, Poznan University of Technology, 60-965 Poznan, Poland
Mateusz Barczewski: Faculty of Mechanical Engineering, Institute of Materials Technology, Poznan University of Technology, 60-965 Poznan, Poland

Energies, 2021, vol. 14, issue 6, 1-13

Abstract: The aim of this study was to investigate and analyze the impact of selected parameters during the tribocharging process of shredded poly(ethylene terephthalate) (PET) and high-density polyethylene (PE-HD) plastics on accumulated electric charge and electrostatic separation effectiveness. The accumulation of electric charge on surfaces of polymer particles as a result of their circular motion forced by the airflow cyclone container was investigated. The impact of the container material, time of tribocharging and the airflow intensity were experimentally examined. A container in which the particles of the considered polymers are electrified with opposite charges was selected. A high ability to accumulate surface charge on small particles of both polymers was demonstrated. The electrified mixed PET/PE-HD was subjected to a separation process. An electrostatic separator designed and constructed by the authors was used for to the separation. In turn, to assess the effectiveness of this separation, a dedicated vision system was used. Based on the result of the carried out tests, it has been assumed that the proposed approach’s effectiveness has been demonstrated by means of empirical validation.

Keywords: electric field; PET; PE-HD; tribocharging; electrostatic separation; vision system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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