Indium Recycling from Waste Liquid Crystal Displays: Is It Possible?

被引:5
|
作者
Vucinic, Aleksandra Anic [1 ]
Simunic, Snjezana [2 ]
Radetic, Lucija [1 ]
Presecki, Ivana [1 ]
机构
[1] Univ Zagreb, Fac Geotech Engn, Hallerova Aleja 7, Varazhdin 42000, Croatia
[2] Minist Econ & Sustainable Dev, Radnicka Cesta 80, Zagreb 10000, Croatia
关键词
waste electric and electronic equipment (WEEE); liquid crystal displays (LCDs); liquid crystals; indium recovery; recycling; VALUABLE MATERIALS; LCD PANEL; RECOVERY; METALS; TRENDS; FOCUS; GLASS; WEEE;
D O I
10.3390/pr11061662
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The utilization of valuable properties of waste and their reuse as raw materials is an imperative of the circular economy. Waste electrical and electronic equipment (WEEE) is a significant source of valuable raw materials, certain metals, and rare earth elements that are the basis for highly sophisticated IT equipment production. It is estimated that the production of WEEE in Europe in 2019 was 16.20 kg/inhabitant, while quantities continue to grow at a rate of 3-4% per year. Waste liquid crystal displays used in televisions, laptops, desktops, and other devices represent a significant share of WEEE and contain 0.12-0.14% of liquid crystals whose main ingredient is indium-tin oxide. In order to investigate and determine the methods and conditions of indium recycling from waste LCDs, laboratory research was conducted. The influence of temperature, particle size, and retention time in different media with and without ultrasound treatment was monitored to provide the efficiency of indium leaching. The analysis of the results showed that 98% indium leaching was achieved with granulation samples of 10 x 10 mm at a temperature 40 & DEG;C/40 min in solution H2O:HCl: HNO3 = 6:2:1 under ultrasound conditions, while aqueous and alkaline media under the same conditions did not show significant efficiency. This study can be used as a practical reference for the recycling of indium from LCD panels.
引用
收藏
页数:11
相关论文
共 50 条
  • [21] Towards Commercialization of Indium Recovery from Waste Liquid Crystal Display Screens
    Boundy, Thomas
    Taylor, Patrick
    ENERGY TECHNOLOGY 2018: CARBON DIOXIDE MANAGEMENT AND OTHER TECHNOLOGIES, 2018, : 297 - 308
  • [22] Recycling of the indium scrap from ITO sputtering waste
    Hyun Seon Hong
    Hangchul Jung
    Soon-Jik Hong
    Research on Chemical Intermediates, 2010, 36 : 761 - 766
  • [23] Recycling of the indium scrap from ITO sputtering waste
    Hong, Hyun Seon
    Jung, Hangchul
    Hong, Soon-Jik
    RESEARCH ON CHEMICAL INTERMEDIATES, 2010, 36 (6-7) : 761 - 766
  • [24] Hydrometallurgical process for the recycling of indium from waste LCDs
    Yang, Jiaxu
    Retegan, Teodora
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2014, 247
  • [25] Hydrometallurgical Recovery of Indium from Flat-Panel Displays of Spent Liquid Crystal Televisions
    Inoue, Katsutoshi
    Alam, Shafiq
    JOM, 2015, 67 (02) : 400 - 405
  • [26] Recovery of indium from liquid crystal displays of discarded mobile phones using solvent extraction
    Pereira, Estela Bresolin
    Suliman, Anna Luiza
    Tanabe, Eduardo Hiromitsu
    Bertuol, Daniel Assumpcdo
    MINERALS ENGINEERING, 2018, 119 : 67 - 72
  • [27] Hydrometallurgical Recovery of Indium from Flat-Panel Displays of Spent Liquid Crystal Televisions
    Katsutoshi Inoue
    Shafiq Alam
    JOM, 2015, 67 : 400 - 405
  • [28] Indium recovery from spent liquid crystal displays by using hydrometallurgical methods and microwave pyrolysis
    Huang, Yu-Fong
    Wang, Sheng-Yuan
    Lo, Shang-Lien
    CHEMOSPHERE, 2021, 280 (280)
  • [29] Rapid and green process for valuable materials recovery from waste liquid crystal displays
    Cui, Jiaying
    Zhu, Nengwu
    Li, Yao
    Luo, Deliang
    Wu, Pingxiao
    Dang, Zhi
    RESOURCES CONSERVATION AND RECYCLING, 2020, 153
  • [30] Materials Separation from Waste Liquid Crystal Displays Using Combined Physical Methods
    Zhuang, Xuning
    He, Wenzhi
    Li, Guangming
    Huang, Juwen
    Ye, Yingying
    POLISH JOURNAL OF ENVIRONMENTAL STUDIES, 2012, 21 (06): : 1921 - 1927