Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Waste LED Lamp Characterization: A Call for More Consistent and Well-Documented Study

Version 1 : Received: 17 July 2021 / Approved: 20 July 2021 / Online: 20 July 2021 (09:25:18 CEST)

How to cite: Rahman, S.; Larratte, B.; Pompidou, S.; Alix, T. Waste LED Lamp Characterization: A Call for More Consistent and Well-Documented Study. Preprints 2021, 2021070427 (doi: 10.20944/preprints202107.0427.v1). Rahman, S.; Larratte, B.; Pompidou, S.; Alix, T. Waste LED Lamp Characterization: A Call for More Consistent and Well-Documented Study. Preprints 2021, 2021070427 (doi: 10.20944/preprints202107.0427.v1).

Abstract

Solid-state lighting has been replacing conventional lighting in the market, raising concerns for implementing an efficient end-of-life management system. Since LED waste streams have not been quite dominant, characterization studies (product-level characteristics, component-wise information, bill of materials, diversity, and differences) are inconsistent and having substantial gaps. This study investigates the end-of-life LED lamp literature, focusing on the bill-of-materials, and reveals that the characterization procedure suffers from a severe lack of sample representativeness. Consequently, characterization results are widely varied and not generalizable. Moreover, most of the studies did not inform and document the detailed sample characteristics, precluding the possibility of identifying reasons for variation. Combining available information from the recent studies, we present a mass distribution at the component level, exemplifying the prospect for meeting EU regulatory limit and the need for more insight at the lamp and component level. To fill the disconnection between lamp level characteristics and component and material content, we propose a characterization protocol that carefully documents lamp, component, and material level information by establishing a lamp-component–material composition nexus. The protocol may help researchers, policymakers, and industrial stakeholders conduct a systematic characterization, analyze complexities and prepare for a sustainable solution.

Keywords

Solid waste management; LED lamp; characterization protocol; recycling; LED waste management

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