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Published on: July 8, 2016
Recycling of the scrap LCD panels by converting into the InBO3 nanostructure product
Mohammad Assefi1, Samane Maroufi2, Veena Sahajwalla2
1Centre for Sustainable Materials Research and Technology (SMaRT), School of Materials Science and Engineering, University of New South Wales, Sydney, 2052, Australia. m.assefi@unsw.edu.au.
Abstract:
Preparation of the value-added products from e-waste resources is an important step in the recycling process. The present paper aims to propose a methodology for the recovery of In from scrap LCD panel via preparation of InBO3 nanostructure. Discarded LCD panel was subjected to a recycling process through crushing, milling, and oxalic acid leaching to prepare In2(C2O4)3·6H2O. Through the leaching process, B(OH)3 from glass part (alumina borosilicate) has been leached out along with indium oxalate hydrated. Further thermal treatment on these extracted materials at 600 °C could result in the formation of InBO3 nanostructures with an average particle size of 20 nm. A multistep mechanism based on thermodynamic calculations for the recycling of the InBO3 form extracted precursors was proposed. Graphical abstract.
