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Indium Recovery by Selective Removal of Copper and Tin from ITO Etching Waste Solution by Cementation with Cobalt and Subsequent Electro-Winning: A Validation Experiment*

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Published/Copyright: October 1, 2014
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Materials Testing
From the journal Materials Testing Volume 56 Issue 5

Abstract

A three-step batch-type indium recovery method was developed to prove feasibility of recovering indium powders from highly acidic dilute indium chloride solution prepared by dissolving indium tin oxide (ITO) electrodes of waste liquid crystal display (LCD) panels in concentrated hydrochloric acid (HCl) solutions. More specifically, a batch-type three-step indium recovery by cementation and subsequent electro co-deposition process was designed and performed and its individual experimental parameters were varied to get insights in the engineering feasibility of validation experiments. Significant proportion of copper and tin was removed by cementation with cobalt powder. Residual copper and tin ions were further removed by primary electro co-deposition directly from the highly acidic etching waste solution recovered from cementation process. Synergistic effect of cobalt electro co-position on indium electro-reduction was observed during secondary electro co-deposition, which warrants additional electro-refining process for selective removal of indium from cobalt-indium metal mixture and its purification. Ionic and metallic species thus obtained from the validation experiments were further characterized using various analytical tools such as inductively coupled plasma/atomic emission spectroscopy (ICP/AES), X-ray diffraction (XRD), scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDS), and X-ray fluorescence (XRF).

Kurzfassung

Es wurde eine dreistufige Indiumbatchgewinnungsmethode entwickelt, um die Möglichkeit der Gewinnung von Indiumpulvern aus hochgradig sauren verdünnten Chloridlösungen zu prüfen, die durch das Auflösen von Indium-Zinnoxid-Elektroden aus Flüssigkristalldisplays (Liquid Crystal Displays (LCD)) in konzentrierter Salzsäure hergestellt wurden. Die dreistufige Indiumbatchgewinnung durch Zementation und nachfolgendem elektrochemischen Mitablagerungsprozess wurde spezifisch so designed und angewendet sowie dessen individuelle experimentelle Parameter so variiert, um Einblicke in die technische Machbarkeit der Versuchsexperimente zu bekommen. Hierzu wurden signifikante Anteile von Kupfern und Zinn mittels Zementation durch Kobaltpulver entfernt. Die restlichen Kupfer- und Zinnionen wurden anschließend mittels primärer elektrochemischer Mitablagerung direkt aus der stark sauren Ätzabfalllösung aus dem Zementationsprozess entfernt. Es wurde ein synergistischer Effekt der Kobalt-Elektromitablagerung auf die elektrochemische Indiumreduktion während der sekundären elektrochemischer Mitablagerung beobachtet, der einen zusätzlichen elektrochemischen Affinierungsprozess für die selektive Entfernung von Indium aus einer Kobalt-Indium-Mischung und seine Reininung garantiert. Die so aus den Validierungsexperimenten gewonnenen ionischen und metallischen Anteile wurden anschließend mittels verschiedener analytischer Methoden charakterisiert, wie zum Beispiel induktiv gekoppelte plasma/atomare Emmissionsspektroskopie (ICP-AES), Röntgendiffraktometrie (XRD), rasterelektronenmikroskopische energiedispersive Röntgenspektroskopie (SEM-EDS) und Röntgenfluoreszenz (XRF).

** Correspondence Address, Dr. Sungkyu Lee, Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE), 633-2 Goan-ri, Baegam-myeon, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-863, Korea, E-mail:
*

Work leading to this manuscript was conducted at Institute for Advanced Engineering, Korea (IAE) and all of the legal claims for the research belong to the IAE.

Myung-hwan Hong, born 1986, received his BS and MS both in Materials Science and Engineering from Korea Advanced Institute of Science and Technology, Daejeon, Korea and Hanyang University, Seoul, Korea in 2010 and 2012, respectively. He is currently working as researcher at the Advanced Materials and Processing Center, Institute for Advanced Engineering, Yongin-si, Gyeonggi-do, Korea.

Sungkyu Lee, born 1959, received his BS from Hanyang University of Seoul, Korea, in 1982. He graduated as MS and PhD in Materials Science and Engineering at the University of Minnesota, USA, in 1991 and 1994, respectively. Now he is working as principal engineer at the Advanced Materials and Processing Center, Institute for Advanced Engineering, Yongin-si, Gyeonggi-do, Korea.

Soo-Young Lee, born 1979, received his BS and MS from School of Energy, Materials & Chemical Engineering at Korea University of Technology & Education, Cheonan-si, Korea and in Materials Science and Engineering at Yonsei University, Seoul, Korea, in 2003 and 2011, respectively. Now he is working as senior researcher at the Advanced Materials and Processing Center, Institute for Advanced Engineering, Yongin-si, Gyeonggi-do, Korea.

Sung-Su Cho, born 1973, received his BS from Kyonggi University, Suwon, Korea, in 2005. He graduated as MS in Energy Systems Research at the Ajou University, Suwon, Korea, in 2007. Now he is working as principal engineer at the Advanced Materials and Processing Center, Institute for Advanced Engineering, Yongin-si, Gyeonggi-do, Korea. Besides, he is currently under PhD program at the Energy System Division, Ajou University, Suwon-si, Korea.

Hyun Seon Hong, born 1968, received his BS, MS, and PhD in Materials Engineering from Hanyang University of Seoul, Korea, in 1991, 1994, and 1998, respectively. Now he is working as center leader of the Advanced Materials and Processing Center, Institute for Advanced Engineering, Yongin-si, Gyeonggi-do, Korea.

Deokil Jeon, born 1966, received his BS and MS both in Inorganic Materials Science and Engineering from the Hanyang University, Seoul, Korea in 1989 and 1991, respectively. He is currently working as executive director for TSM, Co., Ltd., Gyeongsangbuk-do, Korea.

References

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Published Online: 2014-10-01
Published in Print: 2014-05-01

© 2014, Carl Hanser Verlag, München

Articles in the same Issue

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. Environmental Effects on Mechanical Properties of Glass-Epoxy Composites
  5. The Effect of Borax on the Friction Performance of an Automotive Brake Lining
  6. Aramid-HDPE Composites: Influence of Interface Adhesion Measured by T-peel Test on Tensile Properties
  7. Prediction of Surface Roughness in Longitudinal Turning Process by a Genetic Learning Algorithm
  8. Effect of Rotation Speed on the Quality of Friction Welded AA 6061/AA 7075 Joints
  9. Detection of defects in metallic specimens supported by ultrasound propagation simulations
  10. Wear Properties of Fe-Cr-C and B4C Powder Coating on AISI 316 Stainless Steel Analyzed by the Taguchi Method
  11. Combustion Behaviour of Solid Propellants for Micro-Thruster
  12. Structure Optimization of the 2D Angular Rotation of a Micro/Nano Table Using the Interface between Matlab and ANSYS
  13. Indium Recovery by Selective Removal of Copper and Tin from ITO Etching Waste Solution by Cementation with Cobalt and Subsequent Electro-Winning: A Validation Experiment*
  14. Effectiveness of Coatings on the Corrosion Resistance of the External Surface of Concrete Structures
  15. Vorschau/Preview
  16. Vorschau
https://doi.org/10.3139/120.110577

Articles in the same Issue

  1. Inhalt/Contents
  2. Inhalt
  3. Fachbeiträge/Technical Contributions
  4. Environmental Effects on Mechanical Properties of Glass-Epoxy Composites
  5. The Effect of Borax on the Friction Performance of an Automotive Brake Lining
  6. Aramid-HDPE Composites: Influence of Interface Adhesion Measured by T-peel Test on Tensile Properties
  7. Prediction of Surface Roughness in Longitudinal Turning Process by a Genetic Learning Algorithm
  8. Effect of Rotation Speed on the Quality of Friction Welded AA 6061/AA 7075 Joints
  9. Detection of defects in metallic specimens supported by ultrasound propagation simulations
  10. Wear Properties of Fe-Cr-C and B4C Powder Coating on AISI 316 Stainless Steel Analyzed by the Taguchi Method
  11. Combustion Behaviour of Solid Propellants for Micro-Thruster
  12. Structure Optimization of the 2D Angular Rotation of a Micro/Nano Table Using the Interface between Matlab and ANSYS
  13. Indium Recovery by Selective Removal of Copper and Tin from ITO Etching Waste Solution by Cementation with Cobalt and Subsequent Electro-Winning: A Validation Experiment*
  14. Effectiveness of Coatings on the Corrosion Resistance of the External Surface of Concrete Structures
  15. Vorschau/Preview
  16. Vorschau
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