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http://dx.doi.org/10.7844/kirr.2014.23.2.61

Decontamination of Mercury Contained in CCFLs (Cold Cathode Fluorescence Light) Disassembled from Waste LCDs (Liquid Crystal Display)  

Park, Jae Layng (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Lee, Sungkyu (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Kang, Leeseung (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Lee, Chan Gi (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Cho, Sung-Su (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Hong, Myung Hwan (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Hong, Hyun Seon (Advanced Materials & Processing Center, Institute for Advanced Engineering)
Publication Information
Resources Recycling / v.23, no.2, 2014 , pp. 61-70 More about this Journal
Abstract
LCD televisions and monitors use cold cathode fluorescence lamps (CCFLs) to illuminate the screen. Most CCFLs contain mercury and they have to be carefully handled at the end of their lives as per minimum treatment standards under the Waste Electrical and Electronic Equipment (WEEE) and Restriction of Hazardous Substances (RoHS) directives. CCFLs were carefully separated from mold frames of waste LCD units for primary decontamination of mercury/fluorescent compound mixture using CCFL decontamination system designed and fabricated in the present research. Residual mercury was further removed by employing a pyro-process, where crushed CCFL tubes transferred from primary decontamination process were subject to heat treatment at $550^{\circ}C$ in a box furnace: more than 99% of mercury was removable from waste CCFLs.
Keywords
waste LCDs; materials recycling; CCFL; mercury compound; RoHS;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Sungkyu Lee, Leeseung Kang, Chan Gi Lee, Myung Hwan Hong, Sung-Su Cho, Hyun Seon Hong, 2013: Disassembly and Compositional Analysis of Waste LCD Displays, J. of Korean Inst. of Resources Recycling, 22 (2), pp. 29-36.   과학기술학회마을   DOI
2 T J McDonnell and K S Williams, 2010: The location and character of mercury in waste LCD backlights, WRAP (Waste & Resources Action Programme), Banbury, UK.
3 H Boni and R Widmer, 2011: Disposal of Flat Panel Display Monitors in Switzerland, Final Report, EMPA (Swiss Federal Laboratories for Materials Science and Technology), St. Gallen, Switzerland.
4 Hyun Seon Hong, Man Sik Kong, Sungkyu Lee, Hong Yoon Kang, 2010: Overview and Future Concerns for Recycling Display Wastes, Korea Industrial Chemistry News, 13 (1), pp. 10-19.
5 Sungkyu Lee, Sung-Su Cho, Soo-Young Lee, Jae Layng Park, Myung Hwan Hong, Hyun Seon Hong, 2013: Effects of PE (Polyethylene) and GF (Glass Fiber) Addition on Tensile Strength and Elongation of ABS (Acrylonitrile Butadiene Styrene) Recovered from Waste LCDs, J. of Korean Resources Recycling, 22 (3), pp. 50-56.   과학기술학회마을   DOI
6 www.wm.edu/facman/safety/Documents/bulbs.doc
7 John Cryan, Keith Freegard, Liz Morrish, Nicola Myles, 2010: Demonstration of Flat Panel Display Recycling Technologies, WRAP (Waste & Resources Action Programme), Banbury, UK