Recycling Processes for the Recovery of Metal from E-waste of the LED Industry

Santos, Emanuele Caroline Araújo dos; Silveira, Tamires Augustin da; Colling, Angéli Viviani; Moraes, Carlos Alberto Mendes; Brehm, Feliciane Andrade

doi:10.1007/978-3-030-14184-4_9

E-Waste Recycling and Management

2019

DOI: 10.1007/978-3-030-14184-4_9

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Recycling Processes for the Recovery of Metal from E-waste of the LED Industry

Emanuele Caroline Araújo dos Santos

Tamires Augustin da Silveira

Angéli Viviani Colling

et al.

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Cited by 2 publications

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“…있는 동력을 제공할 수 있다 7,8) . 그러나, 대다수의 LED 폐 조명은 재활용 기술의 부재로 매립 또는 소각으로 처리되 고 있어 심각한 환경 부하(토양오염, 온실가스 및 유해가 스 발생 등)의 원인이 되고 있으며, 폐자원의 해외 유출로 주요 자원 손실도 발생하고 있는 상황이다 9) .…”

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Waste LED Recycling: Status and Prospects

Lee,

Oh,

Park

2024

Resour. Recycl.

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Owing to technological advancements and energy-saving policies, the demand for LED is increasing, leading to rapid industry expansion. Consequently, efficient recycling of accumulated LED waste has become a growing social concern, and current recycling status of LED waste resources and future directions were reviewed. Currently, waste LED recycling is focused on Ga recovery. Therefore, the development of integrated recycling technologies such as pre-treatment and concentration/ recovery of high valued materials is necessary. In this study, we investigated the status and recycling technologies of waste LED and presented prospects.

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unclassified

Waste LED Recycling: Status and Prospects

Lee,

Oh,

Park

2024

Resour. Recycl.

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A Review on Recycling of End-of-Life Light-Emitting Diodes for Metal Recovery

Mir

Vaishampayan

Dhawan

2022

JOM

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The generation of end-of-life light-emitting diodes (LEDs) requires efforts to minimize waste and recycle critical raw elements (gallium, indium, and rare earths). This review critically analyzes recycling processes such as physical, hydrometallurgical, and pyrometallurgical treatments. An insight into gallium compounds (GaN, GaAs) and their influence on recycling strategies is provided. Pre-treatment plays a critical role in dissociating the rigid structure of GaN. The major gaps in recycling are identification, segregation, selective recovery, and limited studies on the elemental flow of toxic arsenic. It is calculated that the processing of 1 ton of LEDs is equivalent to 7.8 tons, 3.2 tons, and 42 tons of primary Ga ore, In ore, and Au ore in metallurgical value, respectively. The market value calculations revealed significant economic values of Au, Ag, and REEs. A recycling flowsheet based on the literature for the holistic recovery of Ga, In, Au, and REEs is proposed.

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Recycling Processes for the Recovery of Metal from E-waste of the LED Industry

Cited by 2 publications

References 16 publications

Waste LED Recycling: Status and Prospects

Waste LED Recycling: Status and Prospects

A Review on Recycling of End-of-Life Light-Emitting Diodes for Metal Recovery

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