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APPLICATION OF SUB-CRITICAL WATER FOR RECOVERY OF TIN AND GLASS SUBSTRATES FROM LCD PANEL E-WASTE
- Source :
- Detritus, Vol Volume 04-December 2018, Iss 0, Pp 98-103 (2018)
- Publication Year :
- 2018
- Publisher :
- Eurowaste SRL, 2018.
-
Abstract
- Tin and transparent glass substrate were efficiently recovered from color filter (CF) and thin-film transistor (TFT) glasses in LCD panel wastes using sub-critical water (sub-CW) at various treatment temperatures and reaction time. Treatment for 5 min using sub-CW added with NaOH resulted in a 95% recovery of tin from CF and TFT glasses. The tin oxide did not liquify in the liquid phase instead stayed in the organic multi-layers, which exfoliated together from the CF glass and TFT glass. This is a huge advantage because the organic multi-layers were readily separated by sub-CW and tin was recovered by filtration with ease. Transparent and clean glass was also recovered from LCD panel waste. The amount of tin oxide recovered depended on the sub-CW reaction temperature, reaction time and NaOH concentration. Treatment of smaller CF glass improved the recovery of tin. With this advance, we have showed that sub-CW method is technically feasible for tin oxide recovery in LCD waste.
- Subjects :
- Environmental Engineering
Materials science
chemistry.chemical_element
02 engineering and technology
law.invention
lcsh:Environmental pollution
020401 chemical engineering
law
Color gel
Environmental Chemistry
Sub critical
lcsh:TA170-171
0204 chemical engineering
Waste Management and Disposal
Filtration
Liquid-crystal display
Substrate (chemistry)
021001 nanoscience & nanotechnology
Tin oxide
lcsh:Environmental engineering
chemistry
Chemical engineering
Thin-film transistor
lcsh:TD172-193.5
0210 nano-technology
Tin
Subjects
Details
- ISSN :
- 26114135
- Database :
- OpenAIRE
- Journal :
- Detritus
- Accession number :
- edsair.doi.dedup.....54f9de46f5ee0c1991b7a3f2d318fd83
- Full Text :
- https://doi.org/10.31025/2611-4135/2018.13738