TWO-STAGE INCLINED-PLANE ELECTROSTATIC SEPARATOR FOR MILLIMETER-SIZED PARTICLES

Authors

DOI:

https://doi.org/10.59277/RRST-EE.2025.3.3

Keywords:

Electrostatic separation, Tribo-electricity, Plastic particles, Recycling, Experimental design methodology

Abstract

This paper aims to study and optimize a new configuration of an inclined-plane-type electrostatic separator. The device consists of two inclined planes arranged in a cascade. The design is aimed at efficiently separating millimeter-sized particles, specifically polycarbonate (PC) and polyamide (PA). Preliminary experiments were conducted to investigate the effects of various operating parameters on separation efficiency, including tribo-electric charging time, fluidizing air speed, and the angle between the high-voltage electrodes. The design of experiments (DOE) methodology was employed to model the outcome of the separation process, focusing on two control variables: the length of the electrodes generating the electric field and the applied voltage level. The results revealed the existence of optimal values, resulting in a product recovery rate of 97 %, with high purity levels (98 % for PC and 96% for PA).

Author Biographies

  • MOKDAD REMANDIA, Electrical Engineering Laboratory –LGEG, University 8 May 1945, B.P.401, Guelma 24000, Algeria

    Mokdad Remadnia is a senior lecturer in the Electro-technical and Automatic Department at the University of Guelma. He received the Doctorate degree and the "Habilitation Universitaire" in electrical engineering from the same university in 2012 and 2018, respectively. He has published several scientific papers in international and national journals, as well as in conference proceedings. His research interests include the surface potential decay, high-voltage engineering and electrostatics applications.

  • MILOUD KACHI, Electrical Engineering Laboratory – LGEG, University 8 May 1945, B.P.401, Guelma 24000, Algeria.

    Miloud KACHI is a professor (full) in the Electrotechnical and Automatic Department at the University of Guelma (Algeria). He earned the doctorate degree and the "habilitation universitaire" from the same university. He is the leader of the dielectric materials research team at the Electrical Engineering Laboratory (LGEG).

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Published

30.08.2025

Issue

Vol. 70 No. 3 (2025): RRST-EE

Section

Électrotechnique et électroénergétique | Electrical and Power Engineering

License

Copyright (c) 2025 REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE

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How to Cite

TWO-STAGE INCLINED-PLANE ELECTROSTATIC SEPARATOR FOR MILLIMETER-SIZED PARTICLES. (2025). REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE, 70(3), 301-306. https://doi.org/10.59277/RRST-EE.2025.3.3