@article{oai:kanazawa-u.repo.nii.ac.jp:00010593,
 author = {Hasegawa, Hiroshi and Rahman, Ismail M. M. and Egawa, Yuji and Sawai, Hikaru and Begum, Zinnat A. and Maki, Teruya and Mizutani, Satoshi},
 issue = {1},
 journal = {Journal of Hazardous Materials},
 month = {Jun},
 note = {Indium is a rare metal that is mostly consumed as indium tin oxide (ITO) in the fabrication process of liquid crystal display (LCD) panels. The spent LCD panels, termed as LCD-waste hereafter, is an increasing contributor of electronic waste burden worldwide and can be an impending secondary source of indium. The present work reports a new technique for the reclamation of indium from the unground LCD-waste using aminopolycarboxylate chelants (APCs) as the solvent in a hyperbaric environment and at a high-temperature. Microwave irradiation was used to create the desired system conditions, and a substantial abstraction of indium (≥80%) from the LCD-waste with the APCs (EDTA or NTA) was attained in the acidic pH region (up to pH 5) at the temperature of ≥120. °C and the pressure of ~50. bar. The unique point of the reported process is the almost quantitative recovery of indium from the LCD-waste that ensured via the combination of the reaction facilitatory effect of microwave exposure and the metal extraction capability of APCs. A method for the selective isolation of indium from the extractant solution and recycle of the chelant in solution is also described. © 2013 Elsevier B.V.},
 pages = {10--17},
 title = {Chelant-induced reclamation of indium from the spent liquid crystal display panels with the aid of microwave irradiation},
 volume = {254-255},
 year = {2013}
}