Recovery of electronic wastes as fillers for electromagnetic shielding in building components: An LCA study

JOURNAL OF CLEANER PRODUCTION

卷:280

Article

La Rosa, Angela Daniela^1,2  Grammatikos, Sotirios A.¹  Ursan, George Andrei^2,3  Aradoaei, Sebastian³  Summerscales, John⁴  Ciobanu, Romeo Cristian^2,3  Schreiner, Cristina Mihaela^2,3 

[1] Norwegian Univ Sci & Technol, Dept Mfg & Civil Engn, Grp Sustainable Composites, Gjovik, Norway

[2] SC All Green SRL, Iasi, Romania

[3] Tech Univ, Fac Elect Engn Gheorghe Asachi, Iasi, Romania

[4] Univ Plymouth, Sch Engn Comp & Math, MAt & STruct MAST Res Grp, Plymouth, Devon, England

关键词: Electromagnetic shielding;    Waste recovery;    Thermal insulation;    Recycling;    Polymer;    Metallic filler;   

DOI  :  10.1016/j.jclepro.2020.124593

来源: Elsevier

【 摘 要 】

The present study reports the development of sandwich panels for building walls having electromagnetic interference (EMI) shielding abilities. Conductive polymer composites (CPCs) have started being employed as EMI shielding materials. In this paper we propose the use of a conductive polymer composite flat sheet made of high-density polyethylene (HDPE) recovered from municipal solid wastes (MSW) used as polymeric matrix, doped with dispersed metal fillers recycled from e-wastes. Test results proved that the recycled metal fillers enhance the electrical conductivity and enable EMI shielding. Different sandwich panels were discussed in the context of building applications, using identical HDPE/metal-filler EMI sheets, but different thermal insulation material (polystyrene and glass wool). The life cycle assessment (LCA) methodology was applied to evaluate the environmental impact generated during the following steps: a) recycling of thermoplastic materials from MSW; b) recovering of metallic components from waste PCB; c) re-use of the recovered components into sandwich panels with electromagnetic shielding properties for buildings. The goal of the LCA was to perform a comparative analysis of the composite sandwich structures manufactured to be used as EMI shielding in buildings applications in order to assist the materials selection and eco-design. By means of the LCA results it was possible to manufacture a building component with good EMI shielding properties and reduced environmental impacts. (C) 2020 The Author(s). Published by Elsevier Ltd.

【 授权许可】

Free