Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Current Status of Recycling of LED Waste

LED 폐자원의 재활용 현황

  • Lee, Duk-Hee (Materials Science & Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Shin, Dongyoon (Materials Science & Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Kim, Tae-Hyung (Materials Science & Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Lee, Chan-Gi (Materials Science & Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Park, Kyung-Soo (Materials Science & Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Lee, Ki Woong (SungEel HiMetal Co., Ltd.) ;
  • Lee, Jaeryeong (Dept. of Energy & Resources Engineering, Kangwon National University)
  • 이덕희 (고등기술연구원 융합소재연구센터) ;
  • 신동윤 (고등기술연구원 융합소재연구센터) ;
  • 김태형 (고등기술연구원 융합소재연구센터) ;
  • 이찬기 (고등기술연구원 융합소재연구센터) ;
  • 박경수 (고등기술연구원 융합소재연구센터) ;
  • 이기웅 (성일하이메탈(주)) ;
  • 이재령 (강원대학교 자원에너지시스템공학과)
  • Received : 2019.03.25
  • Accepted : 2019.04.23
  • Published : 2019.04.30
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Abstract

Development of technology makes LED an economical option because of lower energy consumption and better environmental impact. Because higher consumer demand the LED market is expanding rapidly due to its environment-friendly advantages. Expansion of LED application, development of various fusion technologies, the emergence of new markets, and the large-scale expansion of markets would lead to a large volume of e-waste generation with valorization potential. Currently, most of the generated waste being that landfilled and incinerated due to the absence of technology and management system. In this paper, we review the current status of LED waste recycling and analyzes the available recycling technologies.

LED 산업은 기술의 발전과 함께 경제적으로 에너지 절감효과가 큰 동시에 환경친화적인 장점으로 보급이 확산되면서 시장은 급격히 확대되고 있다. 더욱이, 다양한 융합기술과 대규모 신시장의 출현 및 신규시장 확대 등으로 인해 향후 대량의 폐자원이 발생할 것으로 예견되면서 재활용 기술 개발이 요구되는 실정이다. 또한, 현재 발생하고 있는 LED 폐자원의 발생량 및 관리 체계의 부재로 인해 매립 및 소각으로 처리되는 것으로 보고되고 있다. 본 논문에서는 현시점에서의 LED 폐자원 재활용 현황을 살펴보고 재활용 기술 및 방안에 대해 소개하고자 한다.

Keywords

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Fig. 1. Annual scale of (a) domestic LED market and (b) global LED market.

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Fig. 2. Various types of LED package.

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Fig. 3. Process example of LED lamp recycling (reprinted from ref. 10).

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Fig. 5. Ga/In recovery process from LED waste.

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Fig. 7. Process for recovery of valuable metals from LED waste.

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Fig. 6. Separation and recovery of Ga and As using pyrolysis-vacuum metallurgy system (reprinted from ref. 14).

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Fig. 4. (a) LED lamp waste, (b) raw material after EHF comminution, (c) separated LED waste component (reprinted from ref. 10).

Table 1. Recycling directive related to domestic LED waste

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Table 2. WEEE target product category

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Table 3. Comparison between global and domestic LED waste recycling status

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